Pub Date : 2024-10-17DOI: 10.1016/j.jcsr.2024.109075
Heng Liu , Liang Zong , Yongbo Shao , Yang Ding
Environmental corrosion and fatigue damage are two long-term existing factors that deteriorate the safety of steel structures during the service period. Furthermore, fatigue and corrosion exhibit obvious interaction effects and both have high dispersion characteristics. Therefore, reliability analysis with consideration of the corrosion fatigue interaction effect should be carried out. A corrosion fatigue damage propagation model with consideration of the interaction factor k was established to reflect the additional negative impact of the interaction effect. Based on the numerical calculation results, reliability analysis was carried out, corrosion fatigue reliability curves for each loading condition were obtained, and the impacts of environmental corrosive degree were analysed. The FE calculation results based on the proposed simulation method are in good agreement with the test, indicating the validity of the proposed corrosion fatigue simulation method. The corrosion fatigue reliability analysis results show that the corrosion fatigue life is greatly affected by the corrosion rate, and the corrosive environment has a more obvious effect on the life and distribution of corrosion fatigue life under a lower stress amplitude. The established corrosion fatigue life simulation method enables the accurate and facilitated prediction of corrosion fatigue life with consideration of the interaction effect and will provide a technical basis for the reliability analysis of steel structures.
环境腐蚀和疲劳破坏是钢结构在使用期间安全性能下降的两个长期存在的因素。此外，疲劳和腐蚀表现出明显的交互效应，且都具有高度分散的特点。因此，应在考虑腐蚀疲劳交互效应的基础上进行可靠性分析。本文建立了一个考虑了相互作用因子 k 的腐蚀疲劳损伤扩展模型，以反映相互作用效应的额外负面影响。在数值计算结果的基础上，进行了可靠性分析，得到了各加载条件下的腐蚀疲劳可靠性曲线，并分析了环境腐蚀度的影响。基于所提模拟方法的有限元计算结果与试验结果吻合良好，表明所提腐蚀疲劳模拟方法是有效的。腐蚀疲劳可靠性分析结果表明，腐蚀疲劳寿命受腐蚀速率的影响较大，腐蚀环境对较低应力幅值下的腐蚀疲劳寿命及分布的影响更为明显。所建立的腐蚀疲劳寿命模拟方法能够在考虑相互作用效应的前提下准确、方便地预测腐蚀疲劳寿命，将为钢结构的可靠性分析提供技术依据。
{"title":"Corrosion fatigue life simulation and reliability analysis of steel structures","authors":"Heng Liu , Liang Zong , Yongbo Shao , Yang Ding","doi":"10.1016/j.jcsr.2024.109075","DOIUrl":"10.1016/j.jcsr.2024.109075","url":null,"abstract":"<div><div>Environmental corrosion and fatigue damage are two long-term existing factors that deteriorate the safety of steel structures during the service period. Furthermore, fatigue and corrosion exhibit obvious interaction effects and both have high dispersion characteristics. Therefore, reliability analysis with consideration of the corrosion fatigue interaction effect should be carried out. A corrosion fatigue damage propagation model with consideration of the interaction factor <em>k</em> was established to reflect the additional negative impact of the interaction effect. Based on the numerical calculation results, reliability analysis was carried out, corrosion fatigue reliability curves for each loading condition were obtained, and the impacts of environmental corrosive degree were analysed. The FE calculation results based on the proposed simulation method are in good agreement with the test, indicating the validity of the proposed corrosion fatigue simulation method. The corrosion fatigue reliability analysis results show that the corrosion fatigue life is greatly affected by the corrosion rate, and the corrosive environment has a more obvious effect on the life and distribution of corrosion fatigue life under a lower stress amplitude. The established corrosion fatigue life simulation method enables the accurate and facilitated prediction of corrosion fatigue life with consideration of the interaction effect and will provide a technical basis for the reliability analysis of steel structures.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109075"},"PeriodicalIF":4.0,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.jcsr.2024.109082
Aibing Li , Siqi Li , Shan-Shan Huang , Weiyong Wang
Q460GJ steel is a typical high strength and high-performance structural steel. The thermal creep test on two thicknesses (8 mm and 12 mm) of Q460GJ steel plates at elevated temperatures (400–800 °C) was carried out. The test results showed that the thermal creep strain increases with the increases of temperature and stress. When the temperature exceeds about 500 °C and the stress ratio is greater than about 0.55, the Q460GJ steel plate specimens has obvious creep deformations, so it is necessary to consider the thermal creep deformation of steel at elevated temperatures for steel structural design. The difference in plate thickness does not affect the creep properties of the 8 mm and 12 mm Q460GJ steel plates at elevated temperatures. When the temperature is no more than 600 °C, the second stage creep strain rates of Q460 steel are obviously higher than that of Q460GJ steel while the stress levels are close. The Fields & Fields creep model is suitable for fitting the thermal creep strain-time curves for Q460GJ steel. The findings will contribute to providing theoretical support for design of high-performance steel engineering structures under fire.
{"title":"Thermal creep strain test and model of Q460GJ steel at elevated temperatures","authors":"Aibing Li , Siqi Li , Shan-Shan Huang , Weiyong Wang","doi":"10.1016/j.jcsr.2024.109082","DOIUrl":"10.1016/j.jcsr.2024.109082","url":null,"abstract":"<div><div>Q460GJ steel is a typical high strength and high-performance structural steel. The thermal creep test on two thicknesses (8 mm and 12 mm) of Q460GJ steel plates at elevated temperatures (400–800 °C) was carried out. The test results showed that the thermal creep strain increases with the increases of temperature and stress. When the temperature exceeds about 500 °C and the stress ratio is greater than about 0.55, the Q460GJ steel plate specimens has obvious creep deformations, so it is necessary to consider the thermal creep deformation of steel at elevated temperatures for steel structural design. The difference in plate thickness does not affect the creep properties of the 8 mm and 12 mm Q460GJ steel plates at elevated temperatures. When the temperature is no more than 600 °C, the second stage creep strain rates of Q460 steel are obviously higher than that of Q460GJ steel while the stress levels are close. The Fields & Fields creep model is suitable for fitting the thermal creep strain-time curves for Q460GJ steel. The findings will contribute to providing theoretical support for design of high-performance steel engineering structures under fire.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109082"},"PeriodicalIF":4.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Steel tubular columns have emerged as one of the most sought-after solutions for infrastructure development due to their exceptional mechanical properties. The properties include resistance against bi-axial bending, axial compression and also better aesthetic appearance. YSt 310 cold-formed tubular sections are widely used across various Indian infrastructure projects. Given their extensive application, it is crucial to understand the material characteristics of YSt 310 under extreme loading conditions for designing structures that can withstand dynamic, blast, and impact loads. This study focuses on the material characterization of YSt 310 steel through coupon tests conducted at various strain rates (from 3 × 10−4/s to ∼1400/s), temperatures (from 27 to 600 °C), and notch radii (2, 1.5, and 1 mm). High strain rate tests are performed using tensile split Hopkinson pressure bar (TSHPB) and split Hopkinson pressure bar (SHPB). The Johnson-Cook (JC) constitutive and damage model parameters are evaluated alongside Cowper-Symonds (CS) model and presented. Notably, the study proposes modifications to the JC model to improve its predictions, specifically at elevated temperatures. The findings are compared with the strain-based acceptance criteria in ASME B&PV Code, Section III. The experimental findings revealed that the plastic stress demonstrated a positive sensitivity to higher strain rates, while an increase in temperature resulted in negative sensitivity. From the experiments, it was observed that fracture strain decreased with an increase in strain rates, and there is a marginal influence of temperature on fracture strains.
{"title":"Material properties of YSt 310 steel tubular columns under extreme loading conditions","authors":"Prithvi Sangani , Devender Kumar , Isha Paliwal , M. Ramji , S.N. Khaderi , Anil Agarwal","doi":"10.1016/j.jcsr.2024.109076","DOIUrl":"10.1016/j.jcsr.2024.109076","url":null,"abstract":"<div><div>Steel tubular columns have emerged as one of the most sought-after solutions for infrastructure development due to their exceptional mechanical properties. The properties include resistance against bi-axial bending, axial compression and also better aesthetic appearance. YSt 310 cold-formed tubular sections are widely used across various Indian infrastructure projects. Given their extensive application, it is crucial to understand the material characteristics of YSt 310 under extreme loading conditions for designing structures that can withstand dynamic, blast, and impact loads. This study focuses on the material characterization of YSt 310 steel through coupon tests conducted at various strain rates (from 3 × 10<sup>−4</sup>/s to ∼1400/s), temperatures (from 27 to 600 °C), and notch radii (2, 1.5, and 1 mm). High strain rate tests are performed using tensile split Hopkinson pressure bar (TSHPB) and split Hopkinson pressure bar (SHPB). The Johnson-Cook (JC) constitutive and damage model parameters are evaluated alongside Cowper-Symonds (CS) model and presented. Notably, the study proposes modifications to the JC model to improve its predictions, specifically at elevated temperatures. The findings are compared with the strain-based acceptance criteria in ASME B&PV Code, Section III. The experimental findings revealed that the plastic stress demonstrated a positive sensitivity to higher strain rates, while an increase in temperature resulted in negative sensitivity. From the experiments, it was observed that fracture strain decreased with an increase in strain rates, and there is a marginal influence of temperature on fracture strains.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109076"},"PeriodicalIF":4.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.jcsr.2024.109077
Heng Liu , Liang Zong , Yongbo Shao
This study proposes a numerical simulation implementing a cellular automaton model to analyse corrosion–fatigue behaviour considering the coupling effect. A cellular automaton (CA) system was developed to obtain the corroded surface during the corrosion–fatigue process. Regarding surface morphology, CA system accuracy is verified by comparing the surface roughness parameters with those obtained from the corrosion experiments. Then, eleven surface groups were established with the CA system. The surface evolution during the corrosion process was simulated with ABAQUS. A fatigue damage evolution model is employed based on the continuum damage mechanics (CDM) by means of a user-subroutine USDFLD in ABAQUS to simulate the fatigue damage accumulation. The fatigue damage accumulation and the corrosion development can be considered simultaneously with the proposed method; thus, the coupling effect between corrosion and fatigue can be well simulated. The method proposed is verified by considering corrosion–fatigue coupling test results, and the fatigue damage and stress distribution during the corrosion–fatigue loading are analyzed. The proposed method can provide an effective tool for evaluating corrosion–fatigue damage and predicting corrosion–fatigue life.
考虑到耦合效应，本研究提出采用细胞自动机模型进行数值模拟，以分析腐蚀疲劳行为。开发了一种细胞自动机（CA）系统，用于获取腐蚀-疲劳过程中的腐蚀表面。在表面形态方面，通过比较表面粗糙度参数和腐蚀实验获得的参数，验证了 CA 系统的准确性。然后，利用 CA 系统建立了 11 个表面组。用 ABAQUS 模拟了腐蚀过程中的表面演变。通过 ABAQUS 中的用户子程序 USDFLD，采用基于连续损伤力学（CDM）的疲劳损伤演化模型来模拟疲劳损伤累积。所提出的方法可以同时考虑疲劳损伤累积和腐蚀发展，因此可以很好地模拟腐蚀和疲劳之间的耦合效应。通过考虑腐蚀-疲劳耦合试验结果验证了所提出的方法，并分析了腐蚀-疲劳加载过程中的疲劳损伤和应力分布。所提出的方法可为评估腐蚀疲劳损伤和预测腐蚀疲劳寿命提供有效工具。
{"title":"A simulation approach for corrosion-fatigue behaviour of metallic structures considering coupling effect","authors":"Heng Liu , Liang Zong , Yongbo Shao","doi":"10.1016/j.jcsr.2024.109077","DOIUrl":"10.1016/j.jcsr.2024.109077","url":null,"abstract":"<div><div>This study proposes a numerical simulation implementing a cellular automaton model to analyse corrosion–fatigue behaviour considering the coupling effect. A cellular automaton (CA) system was developed to obtain the corroded surface during the corrosion–fatigue process. Regarding surface morphology, CA system accuracy is verified by comparing the surface roughness parameters with those obtained from the corrosion experiments. Then, eleven surface groups were established with the CA system. The surface evolution during the corrosion process was simulated with ABAQUS. A fatigue damage evolution model is employed based on the continuum damage mechanics (CDM) by means of a user-subroutine USDFLD in ABAQUS to simulate the fatigue damage accumulation. The fatigue damage accumulation and the corrosion development can be considered simultaneously with the proposed method; thus, the coupling effect between corrosion and fatigue can be well simulated. The method proposed is verified by considering corrosion–fatigue coupling test results, and the fatigue damage and stress distribution during the corrosion–fatigue loading are analyzed. The proposed method can provide an effective tool for evaluating corrosion–fatigue damage and predicting corrosion–fatigue life.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109077"},"PeriodicalIF":4.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.jcsr.2024.109054
H.U. Chan , F. Walport , L. Gardner
Typically, sway imperfections refer to the out-of-plumbness of structural frames and are a key modelling requirement in design by geometrically nonlinear analyses with imperfections (GNIA). Equivalent geometric imperfections, accounting for the combined influence of initial geometric imperfections, the spread of plasticity and residual stresses, are used for modelling convenience. In EN 1993-1-1, the equivalent member bow imperfection amplitudes for use in design by GNIAare dependent on the imperfection factor(i.e. the assigned buckling curve), the material parameter, the axis of buckling and the type of cross-section resistance check to be performed. By contrast, for equivalent sway imperfections, two constant values – one for elastic and one for plastic cross-section checks – are provided. The dependency ofon the imperfection factorand the material parameterrightly reflects the varying influence of residual stresses and material grade on member buckling. However, sway buckling is also influenced by residual stresses and material grade; the suitability of the current EN 1993-1-1 provisions foris therefore questioned. In the present paper, new equivalent sway imperfections suitable for use in the design of steel and stainless steel structures by GNIAare proposed. The new proposals are shown to be able to provide improved capacity predictions, particularly for stainless steel structures, and are recommended for inclusion into future revisions of Eurocode 3.
{"title":"Equivalent sway imperfections for use in structural steel design by GNIA","authors":"H.U. Chan , F. Walport , L. Gardner","doi":"10.1016/j.jcsr.2024.109054","DOIUrl":"10.1016/j.jcsr.2024.109054","url":null,"abstract":"<div><div><em>Typically, sway imperfections refer to the out-of-plumbness of structural frames and are a key modelling requirement in design by geometrically nonlinear analyses with imperfections (GNIA). Equivalent geometric imperfections, accounting for the combined influence of initial geometric imperfections, the spread of plasticity and residual stresses, are used for modelling convenience. In EN 1993-1-1, the equivalent member bow imperfection amplitudes for use in design by GNIA</em> <span><math><msub><mtext>e</mtext><mrow><mn>0</mn><mo>,</mo><mi>GNIA</mi></mrow></msub><mspace></mspace></math></span> <em>are dependent on the imperfection factor</em> <span><math><mi>α</mi></math></span> <em>(</em>i.e. <em>the assigned buckling curve), the material parameter</em> <span><math><mi>ε</mi></math></span><em>, the axis of buckling and the type of cross-section resistance check to be performed. By contrast, for equivalent sway imperfections</em> <span><math><msub><mtext>ϕ</mtext><mrow><mn>0</mn><mo>,</mo><mi>GNIA</mi></mrow></msub></math></span><em>, two constant values – one for elastic and one for plastic cross-section checks – are provided. The dependency of</em> <span><math><msub><mtext>e</mtext><mrow><mn>0</mn><mo>,</mo><mi>GNIA</mi></mrow></msub></math></span> <em>on the imperfection factor</em> <span><math><mi>α</mi></math></span> <em>and the material parameter</em> <span><math><mi>ε</mi></math></span> <em>rightly reflects the varying influence of residual stresses and material grade on member buckling. However, sway buckling is also influenced by residual stresses and material grade; the suitability of the current EN 1993-1-1 provisions for</em> <span><math><msub><mtext>ϕ</mtext><mrow><mn>0</mn><mo>,</mo><mi>GNIA</mi></mrow></msub></math></span> <em>is therefore questioned. In the present paper, new equivalent sway imperfections suitable for use in the design of steel and stainless steel structures by GNIA</em> <span><math><msub><mtext>ϕ</mtext><mrow><mn>0</mn><mo>,</mo><mi>GNIA</mi></mrow></msub></math></span> <em>are proposed. The new proposals are shown to be able to provide improved capacity predictions, particularly for stainless steel structures</em>, <em>and are recommended for inclusion into future revisions of Eurocode 3.</em></div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109054"},"PeriodicalIF":4.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.jcsr.2024.109078
Xinlei Cheng , Tao Sun , Ziyan Yu , Hui Wang , Xiaoyong He , Rui Mu
Experimental and analytical investigations of steel frames have mainly focused on connection design, with little attentive scrutinization paid to their ductility design. This paper presents a steel grid frame featuring the special interstorey beams that provides the same advantages as the ordinary steel frames, but with improved lateral stiffness and seismic performance. Accordingly, two comparative steel frames with the same steel consumption were constructed at a scale of 1:3, one of which consisted of the steel grid frame and the other of which was a standard steel frame. Two sets of frames were pseudo-statically tested under reversal load, their strain sequences and failure modes were investigated, and seismic indicators were compared including hysteresis curves, load-bearing capability, ductility coefficient, and energy dissipation. The experimental results indicate that the failure mode of the steel grid frame was mainly dominated by the interstorey beams. The interstorey beam is the primary component for energy dissipation and effectively realizes the seismic design concept of a strong column and a weak beam, thus achieving the goal of frame protection. The steel grid frame shows an increase of 3.54 % in the initial stiffness and an increase of 18.51 % in the ultimate load-bearing capacity compared to a standard steel frame. Its superior seismic performance is also demonstrated by an increase in the ductility coefficient from 30.5 % to 57.8 %. Consequently, the seismic performance of the weak-axis connected steel grid frame is superior to that of the strong-axis connected conventional steel frame, which is well-behaved in the numerical frame models.
{"title":"Enhanced seismic resistance of welded steel grid frame with interstorey beams","authors":"Xinlei Cheng , Tao Sun , Ziyan Yu , Hui Wang , Xiaoyong He , Rui Mu","doi":"10.1016/j.jcsr.2024.109078","DOIUrl":"10.1016/j.jcsr.2024.109078","url":null,"abstract":"<div><div>Experimental and analytical investigations of steel frames have mainly focused on connection design, with little attentive scrutinization paid to their ductility design. This paper presents a steel grid frame featuring the special interstorey beams that provides the same advantages as the ordinary steel frames, but with improved lateral stiffness and seismic performance. Accordingly, two comparative steel frames with the same steel consumption were constructed at a scale of 1:3, one of which consisted of the steel grid frame and the other of which was a standard steel frame. Two sets of frames were pseudo-statically tested under reversal load, their strain sequences and failure modes were investigated, and seismic indicators were compared including hysteresis curves, load-bearing capability, ductility coefficient, and energy dissipation. The experimental results indicate that the failure mode of the steel grid frame was mainly dominated by the interstorey beams. The interstorey beam is the primary component for energy dissipation and effectively realizes the seismic design concept of a strong column and a weak beam, thus achieving the goal of frame protection. The steel grid frame shows an increase of 3.54 % in the initial stiffness and an increase of 18.51 % in the ultimate load-bearing capacity compared to a standard steel frame. Its superior seismic performance is also demonstrated by an increase in the ductility coefficient from 30.5 % to 57.8 %. Consequently, the seismic performance of the weak-axis connected steel grid frame is superior to that of the strong-axis connected conventional steel frame, which is well-behaved in the numerical frame models.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109078"},"PeriodicalIF":4.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.jcsr.2024.109081
Seong-Hoon Jeong , Ali Ghamari , Gulhan Ince
{"title":"Corrigendum to “A comparative experimental and numerical study on the shear and flexural mechanism of an innovative butterfly-damper” [Journal of Constructional Steel Research (2024) 108979]","authors":"Seong-Hoon Jeong , Ali Ghamari , Gulhan Ince","doi":"10.1016/j.jcsr.2024.109081","DOIUrl":"10.1016/j.jcsr.2024.109081","url":null,"abstract":"","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109081"},"PeriodicalIF":4.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-16DOI: 10.1016/j.jcsr.2024.109079
Suchao Xie , Zinan Liu , Hao Wang , Kunkun Jing , Guandi He
In order to address the energy absorption (EA) issue caused by limited installation space, a circular tube EA structure with axial cutting coupled radial extrusion (ACCRE) deformation modes is proposed and constructed. The FE model of cutting and extrusion die, bottom plate, cross rib and circular tube was established. The accuracy of the FE model was verified by two repeated tests. Finally, the peak force was predicted by theoretical model. Under the influence of dies, the circular tube produces chips and grooves and exhibits multi-level EA characteristics, with specific EA of 43.38 kJ/kg and first and second order platform force of 107.53 kN and 515.22 kN. With a maximum error of only 6.78 %, the FE model and experimental data offer accurate simulations of deformation patterns, steady-state loads, and EA. The specific EA of the ACCRE tube is increased by 120.2 % and 223.7 %, respectively, when compared to the single deformation modes of cutting and extrusion. This finding indicates that the ACCRE deformation mode can adequately cause the tube to undergo plastic deformation, improve the material utilization rate to better EA effect.
为了解决有限安装空间造成的能量吸收（EA）问题，提出并构建了一种具有轴向切割耦合径向挤压（ACCRE）变形模式的圆管 EA 结构。建立了切割挤压模具、底板、横肋和圆管的 FE 模型。通过两次重复试验验证了 FE 模型的准确性。最后，通过理论模型预测了峰值力。在模具的影响下，圆管产生切屑和沟槽，并表现出多级 EA 特性，比 EA 为 43.38 kJ/kg，一阶和二阶平台力分别为 107.53 kN 和 515.22 kN。FE 模型和实验数据的最大误差仅为 6.78%，可精确模拟变形模式、稳态载荷和 EA。与切割和挤压的单一变形模式相比，ACCRE 管的比 EA 分别增加了 120.2 % 和 223.7 %。这一结果表明，ACCRE 变形模式能充分使管材发生塑性变形，提高材料利用率，达到更好的 EA 效果。
{"title":"Structural design and crashworthiness analysis of axial cutting coupled radial extrusion tube","authors":"Suchao Xie , Zinan Liu , Hao Wang , Kunkun Jing , Guandi He","doi":"10.1016/j.jcsr.2024.109079","DOIUrl":"10.1016/j.jcsr.2024.109079","url":null,"abstract":"<div><div>In order to address the energy absorption (EA) issue caused by limited installation space, a circular tube EA structure with axial cutting coupled radial extrusion (ACCRE) deformation modes is proposed and constructed. The FE model of cutting and extrusion die, bottom plate, cross rib and circular tube was established. The accuracy of the FE model was verified by two repeated tests. Finally, the peak force was predicted by theoretical model. Under the influence of dies, the circular tube produces chips and grooves and exhibits multi-level EA characteristics, with specific EA of 43.38 kJ/kg and first and second order platform force of 107.53 kN and 515.22 kN. With a maximum error of only 6.78 %, the FE model and experimental data offer accurate simulations of deformation patterns, steady-state loads, and EA. The specific EA of the ACCRE tube is increased by 120.2 % and 223.7 %, respectively, when compared to the single deformation modes of cutting and extrusion. This finding indicates that the ACCRE deformation mode can adequately cause the tube to undergo plastic deformation, improve the material utilization rate to better EA effect.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109079"},"PeriodicalIF":4.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The rehabilitation costs of steel plate shear walls (SPSWs) after earthquakes are highly expensive. Likewise, achieving an optimal balance design between stiffness and damping is challenging for engineers. To address the stated barriers, the current study proposes an efficient replaceable structural fuse between the infill panel and frame to enhance the seismic performance of the SPSWs. For this purpose, the grid stiffeners in conjunction with the metallic yielding dampers (MYDs) are employed to connect the infill plate to surrounding structural frames. To examine the seismic performance of the proposed structural model, the finite element models have been meticulously simulated under 16 different scenarios utilizing the ABAQUS engineering software. Then, the comprehensive pushover analyses besides the cyclic analyses are executed upon these models. The obtained results manifested that the proposed SPSW model not only improved the stress distribution across the infill plate but also ensured the maximum exploitation of its capacity. Furthermore, all structural models exhibited a resilience response in short seismic events, which led to the prevention of damage occurrence in structural and non-structural components of buildings. Remarkably, the structural models have resisted an increase in displacement equivalent to a drift of 5 %. Finally, compared with the conventional SPWSs, the proposed structural model illustrated a higher effective damping of 30 % and stiffness of 12 %, simultaneously. However, increasing the number of stiffened zones has not shown a tangible influence on the effective stiffness since the overall structural stiffness is governed by the weak links, which in this case are MYDs.
{"title":"Innovative improvement towards steel plate shear walls employing the grid stiffeners along with the metallic yielding dampers","authors":"Mohsen Sadeghi , Sohrab Shoja , Masoud Amin Safaei Ardakani , Milad Jahangiri","doi":"10.1016/j.jcsr.2024.109080","DOIUrl":"10.1016/j.jcsr.2024.109080","url":null,"abstract":"<div><div>The rehabilitation costs of steel plate shear walls (SPSWs) after earthquakes are highly expensive. Likewise, achieving an optimal balance design between stiffness and damping is challenging for engineers. To address the stated barriers, the current study proposes an efficient replaceable structural fuse between the infill panel and frame to enhance the seismic performance of the SPSWs. For this purpose, the grid stiffeners in conjunction with the metallic yielding dampers (MYDs) are employed to connect the infill plate to surrounding structural frames. To examine the seismic performance of the proposed structural model, the finite element models have been meticulously simulated under 16 different scenarios utilizing the ABAQUS engineering software. Then, the comprehensive pushover analyses besides the cyclic analyses are executed upon these models. The obtained results manifested that the proposed SPSW model not only improved the stress distribution across the infill plate but also ensured the maximum exploitation of its capacity. Furthermore, all structural models exhibited a resilience response in short seismic events, which led to the prevention of damage occurrence in structural and non-structural components of buildings. Remarkably, the structural models have resisted an increase in displacement equivalent to a drift of 5 %. Finally, compared with the conventional SPWSs, the proposed structural model illustrated a higher effective damping of 30 % and stiffness of 12 %, simultaneously. However, increasing the number of stiffened zones has not shown a tangible influence on the effective stiffness since the overall structural stiffness is governed by the weak links, which in this case are MYDs.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109080"},"PeriodicalIF":4.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A state-of-the-art review is presented on the design and research based on response amplification dampers. In recent years, energy-dissipation vibration-reduction technology has been extensively employed for seismic resilience in building structures. Indeed, during minor-to-moderate earthquakes, the displacement or deformation of structures is relatively small, and they cannot fully exert their energy dissipation capacities. Therefore, amplifying the dynamic responses transmitted to the damper is important. Taking the field of shock absorption of building structures as the research object, this article describes the amplification mechanisms of response amplification dampers and elaborates on the device structures and working mechanisms of these dampers, indicating areas that require improvement. Concurrently, it introduces the seismic performance of building structures integrated with response-amplification dampers. To enable full determination of the energy dissipation capacities of dampers based on the seismic design method, this paper elaborates on methods of optimizing the parameters, quantity, and layouts of response amplification dampers. The latest research progress, shortcomings, and prospects are analyzed and summarized. The main purpose of this article is to provide a comprehensive overview of the shock absorption technology of building structures based on response amplification dampers, thus offering valuable reference information for further research and engineering applications in this field.
{"title":"Review on response amplification damper for seismic resilient building structures","authors":"Chen Chen , Wei-hui Zhong , Shi-chao Duan , Zheng Tan , Yu-hui Zheng","doi":"10.1016/j.jcsr.2024.109065","DOIUrl":"10.1016/j.jcsr.2024.109065","url":null,"abstract":"<div><div>A state-of-the-art review is presented on the design and research based on response amplification dampers. In recent years, energy-dissipation vibration-reduction technology has been extensively employed for seismic resilience in building structures. Indeed, during minor-to-moderate earthquakes, the displacement or deformation of structures is relatively small, and they cannot fully exert their energy dissipation capacities. Therefore, amplifying the dynamic responses transmitted to the damper is important. Taking the field of shock absorption of building structures as the research object, this article describes the amplification mechanisms of response amplification dampers and elaborates on the device structures and working mechanisms of these dampers, indicating areas that require improvement. Concurrently, it introduces the seismic performance of building structures integrated with response-amplification dampers. To enable full determination of the energy dissipation capacities of dampers based on the seismic design method, this paper elaborates on methods of optimizing the parameters, quantity, and layouts of response amplification dampers. The latest research progress, shortcomings, and prospects are analyzed and summarized. The main purpose of this article is to provide a comprehensive overview of the shock absorption technology of building structures based on response amplification dampers, thus offering valuable reference information for further research and engineering applications in this field.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"223 ","pages":"Article 109065"},"PeriodicalIF":4.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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