Thin-Walled Structures最新文献_第7页

Experimental and numerical assessment of self-pierce riveting of HIF steel and AA5083 sheets with fracture prediction

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-14 DOI: 10.1016/j.tws.2025.112959

Sai Harshith Badi , R Ganesh Narayanan , Brajesh Asati , Sudip Santra , Kanwer Singh Arora

The current work aims to understand the impact of rivet hardness, diameter and length, and bottom sheet thickness on the quality of Self-piercing rivet (SPR) joints using pip and flat dies. High-strength interstitial free (HIF) steel and AA5083 sheets are joined, with AA as the bottom sheet. Upper sheet fracture during SPR is predicted by a novel strain mapping method through the Shear Fracture Forming Limit Curve (SFFLC) and the existing Hosford-Coulomb fracture model (HC model) using Abaqus, along with experimental validation. Successful SPR joints between the sheets are possible only with a pip die. Rivet cracks and local rivet bending are observed for the flat die. Rivet hardness, rivet length, and bottom sheet thickness show synergistic effects on riveting force, shear fracture, and joint indices. As a result, using smaller rivets (3.35 mm diameter) along with a flat die is not recommended for the sheets, and the 5.3 × 6.0/pip/2/480 configuration is the best choice for joining HIF steel and AA5083. In the numerical prediction, riveting force and indices are predicted with acceptable error within experimental variations and accuracy levels available in the literature. Moreover, SFFLC and HC model-based fracture predictions are accurate; however, SFFLC is easy to implement with calibrated lab scale test data.

{"title":"Experimental and numerical assessment of self-pierce riveting of HIF steel and AA5083 sheets with fracture prediction","authors":"Sai Harshith Badi , R Ganesh Narayanan , Brajesh Asati , Sudip Santra , Kanwer Singh Arora","doi":"10.1016/j.tws.2025.112959","DOIUrl":"10.1016/j.tws.2025.112959","url":null,"abstract":"<div><div>The current work aims to understand the impact of rivet hardness, diameter and length, and bottom sheet thickness on the quality of Self-piercing rivet (SPR) joints using pip and flat dies. High-strength interstitial free (HIF) steel and AA5083 sheets are joined, with AA as the bottom sheet. Upper sheet fracture during SPR is predicted by a novel strain mapping method through the Shear Fracture Forming Limit Curve (SFFLC) and the existing Hosford-Coulomb fracture model (HC model) using Abaqus, along with experimental validation. Successful SPR joints between the sheets are possible only with a pip die. Rivet cracks and local rivet bending are observed for the flat die. Rivet hardness, rivet length, and bottom sheet thickness show synergistic effects on riveting force, shear fracture, and joint indices. As a result, using smaller rivets (3.35 mm diameter) along with a flat die is not recommended for the sheets, and the 5.3 × 6.0/pip/2/480 configuration is the best choice for joining HIF steel and AA5083. In the numerical prediction, riveting force and indices are predicted with acceptable error within experimental variations and accuracy levels available in the literature. Moreover, SFFLC and HC model-based fracture predictions are accurate; however, SFFLC is easy to implement with calibrated lab scale test data.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"210 ","pages":"Article 112959"},"PeriodicalIF":5.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143183438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Twisted and coiled tube actuators driven by hydraulic pressure: Experiment and theory

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-14 DOI: 10.1016/j.tws.2025.112957

Lei Liu , Zhiya Zhang , Dabiao Liu

The twisted and coiled actuators (TCPAs) are new soft actuators that outperform biological muscles on many metrics. Many actuation models have been derived for the control and implementation of the TCPAs, but it is still difficult to accurately describe the hysteresis characteristics. Here, we perform actuation tests on the twisted and coiled tube actuators driven by hydraulic pressure. Based on the generalized Maxwell model, we develop an actuation model for the tube actuators using the updated Lagrangian description. The model can accurately characterize the time-varying nonlinear responses of the actuators. The results indicate that the actuation performance gradually decreases with the pressurization rate and load. An increase in anisotropy can significantly improve the actuation performance. The bias angle of the intermediate layer can determine the twist number of the precursor tube. The load capacity and actuation performance of the tube actuators can be controlled by helix angle and helix radius. This work guides the structural optimization design and precise actuation control of the polymer tube actuators.

{"title":"Twisted and coiled tube actuators driven by hydraulic pressure: Experiment and theory","authors":"Lei Liu , Zhiya Zhang , Dabiao Liu","doi":"10.1016/j.tws.2025.112957","DOIUrl":"10.1016/j.tws.2025.112957","url":null,"abstract":"<div><div>The twisted and coiled actuators (TCPAs) are new soft actuators that outperform biological muscles on many metrics. Many actuation models have been derived for the control and implementation of the TCPAs, but it is still difficult to accurately describe the hysteresis characteristics. Here, we perform actuation tests on the twisted and coiled tube actuators driven by hydraulic pressure. Based on the generalized Maxwell model, we develop an actuation model for the tube actuators using the updated Lagrangian description. The model can accurately characterize the time-varying nonlinear responses of the actuators. The results indicate that the actuation performance gradually decreases with the pressurization rate and load. An increase in anisotropy can significantly improve the actuation performance. The bias angle of the intermediate layer can determine the twist number of the precursor tube. The load capacity and actuation performance of the tube actuators can be controlled by helix angle and helix radius. This work guides the structural optimization design and precise actuation control of the polymer tube actuators.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112957"},"PeriodicalIF":5.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decoupling Poisson's ratio effect from compression-torsion metamaterial

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-14 DOI: 10.1016/j.tws.2025.112955

Yanbin Wang, Lingling Hu, Haifeng Ou, Wen Jiang

Compression-torsion metamaterials are always coupled with the Poisson's ratio effect, leading to some uncontrollable deformation mechanisms, such as premature buckling and failure. Decoupling these two effects and independently regulating them can create various novel lightweight and flexible actuators with displacement mode conversion in narrow working spaces. However, significant challenges still exist in decoupling Poisson's ratio effect from the compression-torsion metamaterial. This paper proposes a kind of cylindrical shell metamaterials composed of inclined X-members, which enables simultaneous and independent regulation of Poisson's ratio and compression-torsion effects. Theoretical models are established to express both the compression-torsion efficiency and the Poisson's ratio with the configurational parameters of X-member, which show good agreement with experiments and simulations. The results reveal that the proposed X-member metamaterial exhibits remarkable compression-torsion efficiency and a controllable Poisson's ratio that spans a wide range, from negative to positive, under uniaxial tension or compression. The designed compression-torsion metamaterial with zero Poisson's ratio can achieve stable rotation-displacement conversion without occupying extra space, thus enabling effective flexible actuation in confined spaces. Moreover, under torsional loading, the metamaterial also demonstrates widely adjustable lateral deformation, including contraction, invariance and expansion, enabling flexible grasping. By introducing a double-layer design of metamaterial, soft actuators and soft graspers are fabricated that effectively protect fragile or precision objects, which work directly through the elastic deformation of the metamaterial, driven by a single motor. Due to the independently and widely adjustable compression-torsion and Poisson's ratio effects, the proposed X-member metamaterial offers a diverse range of lightweight and low-cost flexible transmission solutions, exhibiting tremendous potential in bioengineering and flexible robotics.

{"title":"Decoupling Poisson's ratio effect from compression-torsion metamaterial","authors":"Yanbin Wang, Lingling Hu, Haifeng Ou, Wen Jiang","doi":"10.1016/j.tws.2025.112955","DOIUrl":"10.1016/j.tws.2025.112955","url":null,"abstract":"<div><div>Compression-torsion metamaterials are always coupled with the Poisson's ratio effect, leading to some uncontrollable deformation mechanisms, such as premature buckling and failure. Decoupling these two effects and independently regulating them can create various novel lightweight and flexible actuators with displacement mode conversion in narrow working spaces. However, significant challenges still exist in decoupling Poisson's ratio effect from the compression-torsion metamaterial. This paper proposes a kind of cylindrical shell metamaterials composed of inclined X-members, which enables simultaneous and independent regulation of Poisson's ratio and compression-torsion effects. Theoretical models are established to express both the compression-torsion efficiency and the Poisson's ratio with the configurational parameters of X-member, which show good agreement with experiments and simulations. The results reveal that the proposed X-member metamaterial exhibits remarkable compression-torsion efficiency and a controllable Poisson's ratio that spans a wide range, from negative to positive, under uniaxial tension or compression. The designed compression-torsion metamaterial with zero Poisson's ratio can achieve stable rotation-displacement conversion without occupying extra space, thus enabling effective flexible actuation in confined spaces. Moreover, under torsional loading, the metamaterial also demonstrates widely adjustable lateral deformation, including contraction, invariance and expansion, enabling flexible grasping. By introducing a double-layer design of metamaterial, soft actuators and soft graspers are fabricated that effectively protect fragile or precision objects, which work directly through the elastic deformation of the metamaterial, driven by a single motor. Due to the independently and widely adjustable compression-torsion and Poisson's ratio effects, the proposed X-member metamaterial offers a diverse range of lightweight and low-cost flexible transmission solutions, exhibiting tremendous potential in bioengineering and flexible robotics.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112955"},"PeriodicalIF":5.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The confluence of photostriction, electrostriction, and aerodynamics: A flutter study of perovskite skew plates

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-13 DOI: 10.1016/j.tws.2025.112946

Jing Pan, Yufei Cheng, Jinke Bai

This study investigates the interaction of static and dynamic stabilities of perovskite skew plates, subject to simultaneous photostriction, electrostriction, and supersonic airflow effects. Such smart materials find significant applications in engineering fields. The analysis considers the temperature rise induced by photon absorption within the plate. The displacement field is formulated using the first-order shear deformation theory. A linear opto-electro-thermoelastic model is employed to integrate the effects of photostriction, thermal expansion, inverse piezoelectricity and electrostriction into the mechanical response. A suitable mapping from the orthogonal to the skew coordinate system is employed to enhance the analysis of these plates. Immovable boundary conditions are specifically chosen to study the static bifurcation buckling plates under these circumstances. The aerodynamic pressures generated by supersonic airflow, are simulated using quasi-steady linear piston theory. Motion equations are solved using the energy-based Ritz method founded on the Chebyshev polynomial functions. Critical aerodynamic conditions and flutter phenomena are determined through damping and frequency characteristics. The vibrational mode configurations of the plates prior to and following the onset of flutter, under skew angles, are examined. The results emphasize stability margins, differentiating stable operation, from dynamic instability due to airflow, and static buckling induced by photoelectric effects.

{"title":"The confluence of photostriction, electrostriction, and aerodynamics: A flutter study of perovskite skew plates","authors":"Jing Pan, Yufei Cheng, Jinke Bai","doi":"10.1016/j.tws.2025.112946","DOIUrl":"10.1016/j.tws.2025.112946","url":null,"abstract":"<div><div>This study investigates the interaction of static and dynamic stabilities of perovskite skew plates, subject to simultaneous photostriction, electrostriction, and supersonic airflow effects. Such smart materials find significant applications in engineering fields. The analysis considers the temperature rise induced by photon absorption within the plate. The displacement field is formulated using the first-order shear deformation theory. A linear opto-electro-thermoelastic model is employed to integrate the effects of photostriction, thermal expansion, inverse piezoelectricity and electrostriction into the mechanical response. A suitable mapping from the orthogonal to the skew coordinate system is employed to enhance the analysis of these plates. Immovable boundary conditions are specifically chosen to study the static bifurcation buckling plates under these circumstances. The aerodynamic pressures generated by supersonic airflow, are simulated using quasi-steady linear piston theory. Motion equations are solved using the energy-based Ritz method founded on the Chebyshev polynomial functions. Critical aerodynamic conditions and flutter phenomena are determined through damping and frequency characteristics. The vibrational mode configurations of the plates prior to and following the onset of flutter, under skew angles, are examined. The results emphasize stability margins, differentiating stable operation, from dynamic instability due to airflow, and static buckling induced by photoelectric effects.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"210 ","pages":"Article 112946"},"PeriodicalIF":5.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Free vibration of functionally graded graphene platelets reinforced porous composite plate with multiple cutouts

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-13 DOI: 10.1016/j.tws.2025.112952

Jing Zhang , Lianhe Li

This paper is the first to investigate the free vibration of functionally graded graphene platelets reinforced porous composite (FG-GPLRPC) plate with multiple cutouts, including a rhombic hole, a teardrop-shaped hole and a crack. Based on Mindlin-Reissner plate theory and Hamilton's principle, the corresponding governing equations and boundary conditions are derived. The generalized differential quadrature finite element method (GDQFEM) is used to fill the gap of existing methods, and the mesh discretization and element mapping are carried out. By solving the eigenvalue algebraic system, the free vibration analysis of such plates is realized. The study focuses on the influence of cutout size, cutout type, boundary condition, and material parameter on the natural frequency. The results show that, under different boundary conditions, an increase in cutout size and crack length leads to a gradual reduction in the natural frequency. Notably, the reduction rate for teardrop-shaped holes is significantly greater than for rhombic holes, and the reduction caused by rhombic holes is larger than that caused by cracks.

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引用次数: 0

Nonlinear dynamics and resonance analysis of multilayer porous FG shallow shells reinforced with FG oblique stiffeners under two-term excitation

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-13 DOI: 10.1016/j.tws.2025.112947

Kamran Foroutan, Farshid Torabi

The present research examines the nonlinear dynamic behaviors of multilayer porous functionally graded (MPFG) shallow shells reinforced with FG oblique stiffeners (FGOS), under two-term excitation and combination resonances, utilizing a semi-analytical method. The shallow shells have three layers consisting of ceramic, porous FG (PFG), and metal. The oblique stiffeners are made of FG material and also reinforce the shell internally. In addition, two types of PFG layers, including evenly and unevenly distributed porosities, are examined in the current study. The technique of Lekhnitskii's smeared stiffeners is employed to simulate the stiffeners. Employing a semi-analytical approach, the research introduces a nonlinear model formulated using the first-order shear deformation theory (FSDT) combined with stress functions. Furthermore, the Galerkin method is utilized to discretize the nonlinear governing equations (NGEs). Eventually, the method of multiple scales (MMS) is employed to derive the necessary theoretical relations for examining combination resonance, and P-T method is employed to analyze the vibration responses. To validate the findings of this study, comparisons are made with prior studies as well as with P-T method. The analysis reveals significant impacts of stiffener angles and material parameters on the vibration responses, demonstrating enhanced dynamic performance and resonance management capabilities of the proposed shell configurations. Key findings include the identification of optimal stiffener configurations that minimize resonance amplitudes. The outcomes of this study can serve as reference points for engineers and researchers involved in the design and analysis of MPFG shallow shells reinforced with FGOS.

{"title":"Nonlinear dynamics and resonance analysis of multilayer porous FG shallow shells reinforced with FG oblique stiffeners under two-term excitation","authors":"Kamran Foroutan, Farshid Torabi","doi":"10.1016/j.tws.2025.112947","DOIUrl":"10.1016/j.tws.2025.112947","url":null,"abstract":"<div><div>The present research examines the nonlinear dynamic behaviors of multilayer porous functionally graded (MPFG) shallow shells reinforced with FG oblique stiffeners (FGOS), under two-term excitation and combination resonances, utilizing a semi-analytical method. The shallow shells have three layers consisting of ceramic, porous FG (PFG), and metal. The oblique stiffeners are made of FG material and also reinforce the shell internally. In addition, two types of PFG layers, including evenly and unevenly distributed porosities, are examined in the current study. The technique of Lekhnitskii's smeared stiffeners is employed to simulate the stiffeners. Employing a semi-analytical approach, the research introduces a nonlinear model formulated using the first-order shear deformation theory (FSDT) combined with stress functions. Furthermore, the Galerkin method is utilized to discretize the nonlinear governing equations (NGEs). Eventually, the method of multiple scales (MMS) is employed to derive the necessary theoretical relations for examining combination resonance, and P-T method is employed to analyze the vibration responses. To validate the findings of this study, comparisons are made with prior studies as well as with P-T method. The analysis reveals significant impacts of stiffener angles and material parameters on the vibration responses, demonstrating enhanced dynamic performance and resonance management capabilities of the proposed shell configurations. Key findings include the identification of optimal stiffener configurations that minimize resonance amplitudes. The outcomes of this study can serve as reference points for engineers and researchers involved in the design and analysis of MPFG shallow shells reinforced with FGOS.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112947"},"PeriodicalIF":5.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical study on creep-fatigue damage of titanium alloy pressure shell considering the effect of welding residual stresses

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-13 DOI: 10.1016/j.tws.2025.112953

Yuhao Guo, Yun Teng, Gang Liu, Tianzhen Jiao

Welding residual stress poses a significant threat to the creep-fatigue strength of titanium alloy pressure shells. This paper presents a numerical approach for assessing the evolution of creep-fatigue damage in pressure shells, incorporating the effects of welding residual stress. Two conditions are considered: the application of a heat source on the internal surface and a heat source on the external surface. Based on a heat treatment process that considers the creep stress relaxation effect, welding residual stress reduction is performed on conical-column pressure shell. Numerical simulations of creep-fatigue damage evolution in conical-column pressure shell considering the welding residual stresses were conducted. The results show that the interaction between residual stresses and working stresses significantly diminishes the creep-fatigue life of conical-column pressure shell. Different welding processes lead to noticeably different evolution behaviors of creep-fatigue damage. Considering the residual stresses from external surface welding, the phenomenon of multiple source cracks occurs, with secondary cracks potentially propagating axially. Heat treatment can improve the creep-fatigue life to a certain extent. The research results can guide the design and processing of titanium alloy pressure shells used in deep-sea vehicles.

{"title":"Numerical study on creep-fatigue damage of titanium alloy pressure shell considering the effect of welding residual stresses","authors":"Yuhao Guo, Yun Teng, Gang Liu, Tianzhen Jiao","doi":"10.1016/j.tws.2025.112953","DOIUrl":"10.1016/j.tws.2025.112953","url":null,"abstract":"<div><div>Welding residual stress poses a significant threat to the creep-fatigue strength of titanium alloy pressure shells. This paper presents a numerical approach for assessing the evolution of creep-fatigue damage in pressure shells, incorporating the effects of welding residual stress. Two conditions are considered: the application of a heat source on the internal surface and a heat source on the external surface. Based on a heat treatment process that considers the creep stress relaxation effect, welding residual stress reduction is performed on conical-column pressure shell. Numerical simulations of creep-fatigue damage evolution in conical-column pressure shell considering the welding residual stresses were conducted. The results show that the interaction between residual stresses and working stresses significantly diminishes the creep-fatigue life of conical-column pressure shell. Different welding processes lead to noticeably different evolution behaviors of creep-fatigue damage. Considering the residual stresses from external surface welding, the phenomenon of multiple source cracks occurs, with secondary cracks potentially propagating axially. Heat treatment can improve the creep-fatigue life to a certain extent. The research results can guide the design and processing of titanium alloy pressure shells used in deep-sea vehicles.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112953"},"PeriodicalIF":5.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental investigation of innovative high-bearing and large-deformation steel plate shear wall utilizing trapezoidal corrugated panel

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-13 DOI: 10.1016/j.tws.2025.112950

Si-Da Li, Xiao-Gang Liu

This paper proposed an innovative high-bearing, energy dissipation, and large ductile deformation corrugated steel plate shear wall (CSPSW) by utilizing a trapezoidal corrugated panel to replace traditional flat steel panel, to avoid steel panel buckling or relieve post-buckling bearing degradation with a certain displacement angle. A total of 8 CSPSW specimens with different aspect ratios (wall panel height to width ratio), panel thicknesses, corrugated sub-panel widths, and corrugation angles, were designed and experimentally investigated by quasi-static tests. The influence of different configuration parameters on the bearing, deformation, energy dissipation, and buckling characteristics, were analyzed. The results indicated that the load-deformation process of CSPSW exhibited 4 stages, including the linear-elastic stage, the yielding stage, the wall panel buckling stage, and the post-buckling fracture stage. With reasonable design of the configuration parameters, the CSPSW could achieve stable bearing capacity, avoiding shear buckling of the corrugated steel panel or exhibiting slight post-buckling bearing capacity degradation, thus achieving an equivalent damping coefficient exceeding 0.4. Additionally, decreasing the width-to-height ratio, width-to-thickness ratio, and sub-panel widths or increasing the corrugation angle of CSPSW's wall panel, was beneficial for achieving a larger buckling displacement angle, improving the post-yielding plastic overstrength, as well as relieving post-buckling bearing degradation and improving energy dissipation. It was suggested the width-to-thickness ratio within 150, the width-to-height ratio within 2.0, the sub-panel width-to-thickness ratio within 20, and the corrugation angle over 45°.

{"title":"Experimental investigation of innovative high-bearing and large-deformation steel plate shear wall utilizing trapezoidal corrugated panel","authors":"Si-Da Li, Xiao-Gang Liu","doi":"10.1016/j.tws.2025.112950","DOIUrl":"10.1016/j.tws.2025.112950","url":null,"abstract":"<div><div>This paper proposed an innovative high-bearing, energy dissipation, and large ductile deformation corrugated steel plate shear wall (CSPSW) by utilizing a trapezoidal corrugated panel to replace traditional flat steel panel, to avoid steel panel buckling or relieve post-buckling bearing degradation with a certain displacement angle. A total of 8 CSPSW specimens with different aspect ratios (wall panel height to width ratio), panel thicknesses, corrugated sub-panel widths, and corrugation angles, were designed and experimentally investigated by quasi-static tests. The influence of different configuration parameters on the bearing, deformation, energy dissipation, and buckling characteristics, were analyzed. The results indicated that the load-deformation process of CSPSW exhibited 4 stages, including the linear-elastic stage, the yielding stage, the wall panel buckling stage, and the post-buckling fracture stage. With reasonable design of the configuration parameters, the CSPSW could achieve stable bearing capacity, avoiding shear buckling of the corrugated steel panel or exhibiting slight post-buckling bearing capacity degradation, thus achieving an equivalent damping coefficient exceeding 0.4. Additionally, decreasing the width-to-height ratio, width-to-thickness ratio, and sub-panel widths or increasing the corrugation angle of CSPSW's wall panel, was beneficial for achieving a larger buckling displacement angle, improving the post-yielding plastic overstrength, as well as relieving post-buckling bearing degradation and improving energy dissipation. It was suggested the width-to-thickness ratio within 150, the width-to-height ratio within 2.0, the sub-panel width-to-thickness ratio within 20, and the corrugation angle over 45°.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112950"},"PeriodicalIF":5.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on the dynamic response of steel plates with a pre-formed hole loaded by underwater shock wave

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-13 DOI: 10.1016/j.tws.2025.112926

Yue Li , Xiongwen Jiang , Yu Tang , Hongjian Wei , Wei Zhang

The dynamic response of per-formed steel plate under underwater shock wave is studied experimentally and simulated numerically. Underwater shock wave is generated by underwater shock tube device. In each experiment, the impact strength is easily controlled by the speed of the flying piece. The difference of dynamic response of different pass steel plates was studied. The impact loading zone of the plate is a circle with a diameter of 0.12 m. The whole deformation process of test steel plate was measured by three-dimensional digital image correlation. The test results cover a wide range of structural responses from large plastic deformation to complete tearing. The results show that the dynamic response of per-formed steel plate can be divided into two stages: plastic deformation and structural failure. The mechanical behavior of steel plate during plastic deformation is analyzed by momentum theorem. The simplified formulas of deformation velocity and acceleration in the plastic deformation stage of steel plate are obtained. Numerical simulation method is used to study the influencing factors of circular pre-formed steel plate. The results show that the rolling direction and the defects at the pre-formed holes have a certain influence on the damage morphology of the steel plate. According to the experimental and numerical simulation results, the law of crack generation and propagation is analyzed. The results show that the shape of the pre-formed hole has a significant influence on the damage morphology of the plate.

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引用次数: 0

Random vibration of two-curvature nanoshells with piezoelectric layers resting on viscoelastic foundations

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2025-01-13 DOI: 10.1016/j.tws.2025.112948

Tran Thi Thu Thuy , Nguyen Anh Tu , Nguyen Van Thien , Nguyen Truong Thanh

Simulating the random response of structures is a practical matter that is crucial for design, as the majority of masses operate on them according to random principles. This is the first publication to examine the random vibrations of a two-curvature shell that is supported by a viscoelastic foundation. The core layer is composed of numerous small layers that are arranged in accordance with biomimetic principles, while the two surface layers are composed of piezoelectric materials. This work has established the equilibrium equation system of the shell by integrating classical shell theory with nonlocal theory. The proposed problem has been resolved through the application of analytical solutions. The research problem has been rendered more comprehensible as a result of the experience obtained in analytical form, which is also the most intriguing aspect of this study. Furthermore, this investigation considers the impact of the flexoelectric effect on piezoelectric layers, with a particular emphasis on the viscous resistance parameter of the viscoelastic substrate. Despite the fact that this complicates the calculation expressions, it adds to the intriguing scientific significance of this research in relation to the oscillation of a two-curvature shell. The two-curvature shell is subjected to a stationary random load, and the response spectrum (displacement) is closely correlated with the input spectrum (excitation force) through the function transmission, which accurately represents the shell's response. This investigation has numerous valuable scientific implications, as the results are closely resembling reality.

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引用次数: 0