Engineering Failure Analysis最新文献_第6页

Simulation-driven estimation of stiffness and damping coefficients using Sommerfeld curves for vibration reduction in induced draft fans 基于Sommerfeld曲线的诱导通风机减振刚度和阻尼系数仿真估计

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2026-01-15 DOI: 10.1016/j.engfailanal.2026.110578

Erick-Alejandro González-Barbosa , Jose-Juan Vázquez-Martínez , Gerardo Trejo-Caballero , Hector Castro-Mosqueda , Fernando Jurado Pérez , Alfonso Ramírez-Pedraza , José-Joel González-Barbosa

Computer modeling and simulation are important tools used for solving problems in engineering applied to industry. Proper modeling and simulation testing of the systems under analysis allow for design adjustments before manufacturing, which leads to reductions in time and costs. This project conducts a comprehensive analysis aimed at mitigating excessive vibration in two induced draft fans operating in a thermoelectric power plant. The tools used for the analysis include instrumentation through accelerometers, estimation of stiffness and damping parameters by the Sommerfeld methodology, as well as computer modeling and simulation. The instrumentation enabled estimation of the rotor’s natural frequencies, validated through computer simulation. Finite element analysis (FEA), guided by the Sommerfeld methodology, enhanced simulation accuracy. Sommerfeld curves, reconstructed from low-resolution 1965 printed sources (original digital data unavailable), were digitized and subsequently reconstructed using the Smoothing Spline algorithm for continuous and coherent profiles. At the end of this study, we present a redesign solution, validated through computer modeling and simulation, to reduce excessive vibration in two induced draft fans of a thermoelectric power plant.

计算机建模和仿真是解决工业工程问题的重要工具。对所分析的系统进行适当的建模和仿真测试，可以在制造之前进行设计调整，从而减少时间和成本。本项目针对某热电厂两台引风机的过度振动问题进行了综合分析。用于分析的工具包括通过加速度计的仪器仪表，通过Sommerfeld方法估计刚度和阻尼参数，以及计算机建模和仿真。该仪器能够估计转子的固有频率，并通过计算机模拟验证。在Sommerfeld方法的指导下，有限元分析（FEA）提高了仿真精度。从1965年低分辨率印刷源（原始数字数据不可用）重建的Sommerfeld曲线被数字化，随后使用平滑样条算法重建连续和连贯剖面。在本研究的最后，我们提出了一个重新设计的解决方案，通过计算机建模和仿真验证，以减少热电厂两个引风机的过度振动。

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引用次数: 0

Peridynamic simulation on crack propagation and mechanical properties of tunnel linings with cracks 含裂纹隧道衬砌裂纹扩展及力学性能的动态模拟

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2026-01-10 DOI: 10.1016/j.engfailanal.2026.110561

Yuqiang Pan , Xiaokai Niu , Wei Li , Zixian Jin , Kun Huang , Jie Su , Chengping Zhang

Crack propagation critically threatens the structural integrity of urban underground tunnel linings. This study employs an integrated experimental and numerical methodology, combining scaled model tests with peridynamic (PD) simulations, to investigate cracking mechanisms and quantify the effects of pre-existing cracks in a case study of Beijing Subway Line 1. The complete cracking process, internal force redistribution, and ultimate failure modes are analyzed. Results identify a sequential failure pattern: cracks initially initiate at the invert, subsequently appear at the crown, and then interconnect at the springlines, ultimately leading to structural collapse. Pre-existing cracks are shown to significantly degrade structural stiffness and bearing capacity, with severity increasing with crack depth. Specifically, a crack depth of half the lining thickness reduces the ultimate bearing capacity by 24 %–26 % at the crown and up to 30 % at the invert. This work validates the PD method for tunnel fracture analysis and assessing the safety of tunnel linings.

裂缝扩展严重威胁着城市地下隧道衬砌的结构完整性。本研究以北京地铁1号线为例，采用实验与数值相结合的方法，将比例模型试验与周围动力（PD）模拟相结合，探讨了裂缝机理，并量化了预先存在裂缝的影响。分析了整个开裂过程、内力重分布和最终破坏模式。结果确定了一个顺序的破坏模式：裂缝最初始于仰拱，随后出现在顶部，然后在弹簧线处相互连接，最终导致结构崩溃。既有裂缝会显著降低结构刚度和承载力，且裂缝深度越大，破坏程度越严重。具体来说，裂缝深度为衬砌厚度的一半会使拱顶的极限承载力降低24% - 26%，仰顶的极限承载力降低30%。验证了PD方法在隧道断裂分析和衬砌安全评价中的应用。

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引用次数: 0

Durability assessment of UHPC with varying steel fiber contents under sulfuric acid Attack: Macro-Micro characterization 不同钢纤维含量的UHPC在硫酸侵蚀下的耐久性评价：宏观-微观表征

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2026-01-02 DOI: 10.1016/j.engfailanal.2025.110523

Jie Xiao , Jiajie Liu , Ruiqian Liang , Lingfei Liu , Jiahui Feng , Zhaoxiang He , Xiyuan Chen , Haibo Jiang

This study investigates the degradation mechanisms and mechanical performance evolution of ultra-high-performance concrete (UHPC) exposed to sulfuric acid environments (pH≈0.9) through accelerated immersion tests. The influence of steel fiber content (0 %, 1 %, and 2 %) on UHPC’s deterioration behavior was systematically evaluated using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Experimental results revealed a characteristic mass variation pattern: initial mass gain followed by gradual loss, with higher fiber content specimens exhibiting lower mass change rates due to enhanced corrosion layer spalling. The corrosion depth increased with exposure duration but showed significant retardation after 60 days, demonstrating steel fibers’ effectiveness in reducing penetration. Mechanical characterization indicated progressive deterioration of compressive strength, elastic modulus, flexural strength, and axial tensile strength, with rapid initial degradation followed by stabilization. Steel fiber incorporation significantly improved corrosion resistance coefficients, confirming their beneficial role in acid exposure conditions. The susceptibility of mechanical properties to sulfuric acid attack followed the order: tensile strength > flexural strength > compressive strength. Microstructural analyses identified gypsum as the predominant corrosion product, whose accumulation in matrix pores generated detrimental internal stresses. XRD patterns demonstrated decreasing gypsum peak intensities with sampling depth, while steel fibers effectively inhibited corrosion product formation. The strong correlation between microstructural observations and macroscopic performance degradation provides fundamental insights for durability assessment of UHPC in aggressive sulfuric acid environments.

通过加速浸渍试验研究了硫酸（pH≈0.9）环境下超高性能混凝土（UHPC）的降解机理和力学性能演变。采用x射线衍射仪（XRD）和扫描电镜（SEM）系统评价了钢纤维含量（0%、1%和2%）对UHPC劣化行为的影响。实验结果显示了一种典型的质量变化模式：初始质量增加，然后逐渐减少，纤维含量高的样品由于腐蚀层剥落增强，质量变化率较低。腐蚀深度随着暴露时间的延长而增加，但在60天后表现出明显的延迟，表明钢纤维在减少渗透方面的有效性。力学表征表明，抗压强度、弹性模量、抗弯强度和轴向抗拉强度逐渐恶化，先是快速退化，然后趋于稳定。钢纤维的掺入显著提高了抗腐蚀系数，证实了钢纤维在酸暴露条件下的有益作用。力学性能对硫酸侵蚀的敏感性顺序为：抗拉强度>；弯曲强度>；抗压强度。显微结构分析表明，石膏是主要的腐蚀产物，其在基体孔隙中的积累产生了有害的内应力。XRD谱图显示，随着取样深度的增加，石膏峰强度降低，而钢纤维有效地抑制了腐蚀产物的形成。微观结构观察与宏观性能退化之间的强相关性为UHPC在腐蚀性硫酸环境中的耐久性评估提供了基础见解。

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引用次数: 0

Effects of aged mortar on mechanical behavior of recycled aggregate Concrete: Experimental Tests, Microplane-Based mesoscale simulation and design Implications 老化砂浆对再生骨料混凝土力学性能的影响：实验测试、基于微平面的中尺度模拟和设计启示

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2025-12-31 DOI: 10.1016/j.engfailanal.2025.110521

Lang Lin , Nuo Xu , Di Yang , Yiming Xiao , Yong Yu

Recycled aggregate concrete (RAC) offers clear environmental benefits, yet its heterogeneous internal structure limits broader application. Conventional tests cannot isolate key factors such as the amount and spatial distribution of adhered (aged) mortar. To address this, a mesoscale simulation framework is developed to quantify their influence on RAC’s mechanical behavior. RAC is idealized as a six-phase composite and modeled with a microplane formulation capable of capturing damage evolution, crack initiation and growth, and tension–compression responses while reducing mesh sensitivity. After validation against experiments, parametric analyses were conducted to clarify the roles of adhered-mortar characteristics. The main conclusions are: (a) The model accurately reproduced RAC’s tensile and compressive behavior, including damage patterns, crack evolution and axial–lateral deformation. (b) When new and old mortar had equal strengths, increasing adhered mortar content (0–100%) reduced compressive strength, elastic modulus and tensile strength, with the smallest drop in tensile strength. (c) A uniform coating of old mortar around recycled aggregates lowered uniaxial strength compared with a scattered distribution, with little effect on elastic modulus. (d) With the same average aged-mortar strength, a wider strength variation among aged-mortar phases further decreased RAC strength.

再生骨料混凝土（RAC）具有明显的环境效益，但其内部结构的异质性限制了其更广泛的应用。常规试验不能隔离粘结砂浆的数量和空间分布等关键因素。为了解决这个问题，开发了一个中尺度模拟框架来量化它们对RAC力学行为的影响。RAC被理想化为六相复合材料，并使用微平面公式建模，能够捕捉损伤演化、裂纹萌生和扩展以及拉压缩响应，同时降低网格灵敏度。在与实验验证后，进行了参数分析，以阐明粘结砂浆特性的作用。主要结论如下：(a)该模型准确再现了RAC的拉压行为，包括损伤模式、裂纹演化和轴向侧向变形。(b)新旧砂浆强度相等时，增加粘结砂浆掺量（0 ~ 100%），抗压强度、弹性模量和抗拉强度均降低，抗拉强度下降幅度最小。(c)在再生骨料周围均匀涂覆旧砂浆，单轴强度较分散分布降低，对弹性模量影响不大。(d)在砂浆平均老化强度相同的情况下，砂浆龄期间强度变化较大，进一步降低了RAC强度。

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引用次数: 0

Evaluation of the rock-cutting performance for TBM partial-wear cutters using vibration analysis and discrete element method 用振动分析和离散元法评价TBM部分磨损刀具的切岩性能

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2025-12-30 DOI: 10.1016/j.engfailanal.2025.110512

Yue Li , Heng Xie , Gongbo Zhou , Yan Zhang

Partial wear of disc cutters significantly affects the operational efficiency of tunnel boring machines (TBMs), highlighting the importance of accurate wear evaluation. This study develops a multi-indicator evaluation framework integrating vibration analysis and the discrete element method (DEM) to assess the rock-cutting performance of partial-wear disc cutters. Vibration signals are processed using Fourier transformation and Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN). In addition, DEM simulations are employed to elucidate the rock-breaking mechanisms of partial-wear cutters within a multi-cutter cutterhead system and to interpret the corresponding vibration characteristics. Key findings include: (1) Three quantitative indicators, including Root Mean Square (RMS), Frequency Coefficient of Variation (FCV), and Fuzzy Entropy (FuzzyEn), are able to effectively characterize vibration patterns across different wear levels. With increasing partial wear, RMS and FCV rise, whereas FuzzyEn decreases. (2) With increasing partial wear, the increased sliding friction strengthens dynamic coupling between the cutter and cutterhead, supporting the feasibility of real-time wear monitoring via cutterhead-mounted accelerometers. (3) DEM results indicate that the rock fragmentation process by a partial-wear cutter is no longer dominated by rolling and crushing but by sliding-dominated process.

盘式铣刀的局部磨损严重影响隧道掘进机的工作效率，因此，准确的磨损评估非常重要。本研究建立了一种结合振动分析和离散元法（DEM）的多指标评价框架，对部分磨损盘式切削齿的岩石切削性能进行评价。采用傅里叶变换和自适应噪声的完全集合经验模态分解（CEEMDAN）对振动信号进行处理。此外，采用DEM模拟方法，阐明了多刀刀盘系统中部分磨损刀具的破岩机理，并解释了相应的振动特性。主要发现包括：(1)三个量化指标，包括均方根（RMS）、频率变异系数（FCV）和模糊熵（FuzzyEn），能够有效表征不同磨损水平下的振动模式。随着局部磨损的增加，RMS和FCV升高，而FuzzyEn降低。(2)随着局部磨损的增加，滑动摩擦的增加加强了刀具与刀盘之间的动态耦合，支持了通过安装在刀盘上的加速度计进行实时磨损监测的可行性。(3)数值模拟结果表明，部分磨损刀具的破岩过程不再以滚动破碎为主，而是以滑动破碎为主。

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引用次数: 0

Wear failure analysis of copper alloy connecting rod bearing of high-pressure seawater plunger pump in deep-sea environment 深海高压海水柱塞泵铜合金连杆轴承磨损失效分析

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2026-01-03 DOI: 10.1016/j.engfailanal.2026.110531

Jie Dong , Yinshui Liu , Chenlei Su , Xianchun Jiang , Yipan Deng , Defa Wu , Zhenyao Wang

The lubrication failure and wear of connecting rod bearings are typical fault forms of the transmission components in high-pressure seawater plunger pumps. Different from traditional pumps that work on land, the additional compensating pressure in the deep-sea environment changes the force state of the connecting rod, thereby increasing the risk of failure. The connecting rod bearings used at 2000 m depth exhibited severe wear, with obvious oil oxidation and black carbon deposits. The main wear mechanisms have been confirmed to be adhesive wear and oxidative wear through macroscopic and microscopic examination. To investigate the wear failure, a coupled model of multi-flexible body dynamics (MFBD) and thermo-elasto-hydrodynamic (TEHD) based on flexible linkages was developed, which can accurately obtain the lubrication parameters under different working conditions, including oil film pressure, thickness, bearing deformation, friction thermal load, and wear depth. The influence of the deformation behavior and scraping resistance of connecting rods on wear depth and oil film temperature was investigated, and the formation mechanism of high-temperature oxidation of lubricating oil film and wear surface morphology was analyzed. The results indicate that under deep-sea tensile loading, material segregation and insufficient yield strength cause connecting rod deformation and subsequent scraping. This deformation accelerates wear by altering the oil film geometry, while the associated frictional heating raises the interface temperature, leading to oxidative wear on the bushing surface.

高压海水柱塞泵传动部件的润滑失效和连杆轴承磨损是典型的故障形式。与传统在陆地上工作的泵不同，深海环境中额外的补偿压力改变了连杆的受力状态，从而增加了失效的风险。在2000 m深度使用的连杆轴承磨损严重，有明显的油氧化和黑碳沉积。通过宏观和微观观察，确定了其主要磨损机制为黏着磨损和氧化磨损。为了研究磨损失效，建立了基于柔性连杆机构的多柔体动力学（MFBD）和热弹流动力学（TEHD）耦合模型，该模型能够准确地获得不同工况下的润滑参数，包括油膜压力、厚度、轴承变形、摩擦热载荷和磨损深度。研究了连杆的变形行为和抗刮性对磨损深度和油膜温度的影响，分析了润滑油膜高温氧化的形成机理和磨损表面形貌。结果表明，在深海拉伸载荷作用下，材料偏析和屈服强度不足导致连杆变形和刮擦。这种变形通过改变油膜的几何形状来加速磨损，同时伴随的摩擦加热提高了界面温度，导致衬套表面氧化磨损。

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引用次数: 0

UV–Thermal degradation and failure mechanisms of hybrid Basalt/Glass Fibre reinforced polymer laminates for structural applications 玄武岩/玻璃纤维增强聚合物复合结构板的uv -热降解及破坏机制

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2025-12-17 DOI: 10.1016/j.engfailanal.2025.110479

Sheeraz Ali , Jianxun Liu , Hirwa Nshuti Roger , Furqan Ahmed , Mutahar Ali , Innocent Chikira Msangi , Heping Wu , Zhishen Wu

Fiber-reinforced polymer composites used in outdoor applications face significant degradation due to prolonged UV exposure and temperature variations, leading to reduced mechanical performance and service life. To examine this issue, this paper presents the results of an experimental study to determine the potential for the utilization of hybrid basalt/glass fabric layer arrangements at several UV durations. The composite laminates were manufactured using the hot compression molding process and subjected to tensile testing at 25 °C, 40 °C, and 60 °C after 500, 1000, and 1500 h of UV resistance. The laminate G₁₂ showed the most degradation, whereas G₀B₁₂, G₂B₁₀, and G₄B₈ showed minor degradation or were mostly unchanged when the UV duration and temperature were increased above room temperature. Laminates with a higher proportion of basalt fiber (BF) performed better than those with a higher percentage of glass fiber (GF), particularly when the outer layer was made of basalt fiber, which improved performance and prolonged UV resistance. However, after prolonged UV protection, the tensile strength and elastic modulus of all the laminates dropped noticeably.

由于长时间的紫外线照射和温度变化，用于户外应用的纤维增强聚合物复合材料面临严重的降解，导致机械性能和使用寿命降低。为了研究这个问题，本文提出了一项实验研究的结果，以确定在几种紫外线持续时间下玄武岩/玻璃织物混合层排列的利用潜力。复合材料层压板采用热压缩成型工艺制造，并在抗紫外线500、1000和1500小时后，在25°C、40°C和60°C下进行拉伸测试。当紫外线持续时间和温度高于室温时，层压板G12的降解率最高，而G0B12、G2B10和G4B8的降解率较低或基本不变。玄武岩纤维（BF）含量较高的层压板比玻璃纤维（GF）含量较高的层压板性能更好，特别是当外层由玄武岩纤维制成时，性能得到改善，抗紫外线能力得到延长。然而，经过长时间的紫外线保护后，所有层压板的抗拉强度和弹性模量都明显下降。

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引用次数: 0

Study on the influence of contact zone dip angle between soft and hard rocks on tunnel surrounding rock failure mechanism 软硬岩体接触带倾角对巷道围岩破坏机理的影响研究

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2025-12-23 DOI: 10.1016/j.engfailanal.2025.110501

Haijun Yu , Zhigang Tao , Yonghong Wu , Changyi Yu , Shusen Huo , Hong Wei , Hanqian Weng

The contact zone between soft and hard rocks significantly impacts tunnel stability due to its mechanical heterogeneity and varying dip angles, which can lead to tunnel collapse. In this study, combined with laboratory test, theoretical analysis, field monitoring and FLAC-PFC coupling numerical simulation method, the response of surrounding rock during tunnel excavation is analyzed in depth. The results show that the uniaxial compressive strength ratio between soft and hard rocks is approximately 7, with failure predominantly occurring on the soft rock side. As the dip angle increases from 0° to 90°, failure modes transition from tensile-dominated to shear slip parallel to the dip angle. In the low inclination angle (0°–30°), the accumulation of slip energy is relatively slow, while in the high inclination angle (45°–90°), the accumulation of slip energy is significantly accelerated, highlighting the dominant role of dip angle in shear failure and energy dissipation. The coupled simulation effectively reproduces the overall response of the surrounding rock and provides reliable theoretical and practical support for tunnel construction and support design under similar geological conditions.

软、硬岩石接触区由于其力学非均质性和倾角的变化，对隧道的稳定性影响较大，可能导致隧道坍塌。本研究结合室内试验、理论分析、现场监测和FLAC-PFC耦合数值模拟等方法，对隧道开挖过程中围岩响应进行了深入分析。结果表明：软、硬岩体单轴抗压强度比约为7，破坏主要发生在软岩一侧；随着倾角从0°增大到90°，破坏模式由拉张为主转变为平行于倾角的剪切滑移。在低倾角（0°~ 30°）下，滑移能积累相对缓慢，而在高倾角（45°~ 90°）下，滑移能积累明显加快，突出了倾角在剪切破坏和能量耗散中的主导作用。耦合模拟有效地再现了围岩的整体响应，为类似地质条件下的隧道施工和支护设计提供了可靠的理论和实践支持。

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引用次数: 0

Research on wheel damage of heavy-haul locomotive subjected to longitudinal coupler forces: Formation mechanism and control measures from macro insight 重载机车车轮纵耦力损伤研究：宏观视角下的形成机理与控制措施

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2025-12-23 DOI: 10.1016/j.engfailanal.2025.110482

Qinghua Chen , Qian Xiao , Shiqian Chen , Xiangrui Ran , Xiaoyu Hu , Yang Jin , Binjie Xu , Kaiyun Wang

The distribution of wheel damage of locomotives subjected to longitudinal coupler forces in heavy-haul trains has not yet been fully understood. Field tests confirm that longitudinal compressive coupler forces are commonly present in scenarios in which the train brakes through long downhill slopes, typically where locomotives are prone to wheel damage. This study employs a wheel damage prediction model based on a comprehensive train dynamics simulation to systematically investigate the influence of train braking operations on the dynamic response of locomotives and the distribution of wheel damage. The braking performance and wheel damage under various slopes and control modes are analyzed, and a feasible boundary for braking control is identified to mitigate wheel damage. Furthermore, two damage control schemes based on the differential distribution of electric braking forces are proposed. Simulation results indicate that coupler forces exacerbate wheel damage on slave control locomotives by affecting the axle load transfer of locomotives and demonstrate that the proposed scheme could effectively suppress longitudinal impulses and control wheel damage. These findings establish a foundational framework for implementing braking control modes that actively reduce wheel damage in locomotives of heavy-haul trains.

重载列车机车在纵向耦合力作用下的车轮损伤分布尚未完全了解。现场试验证实，纵向压缩耦合器力通常存在于列车通过长下坡制动的情况下，特别是在机车容易损坏车轮的情况下。本研究采用基于列车综合动力学仿真的车轮损伤预测模型，系统研究列车制动操作对机车动力响应和车轮损伤分布的影响。分析了不同坡度和控制方式下的制动性能和车轮损伤，确定了可行的制动控制边界，以减轻车轮损伤。在此基础上，提出了两种基于电制动力差分分布的损伤控制方案。仿真结果表明，联轴器力通过影响机车轴重传递而加剧了从控机车的车轮损伤，表明该方案能够有效地抑制纵向冲击，控制车轮损伤。这些研究结果为实现主动减少重载列车机车车轮损伤的制动控制模式奠定了基础框架。

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引用次数: 0

Statistical modelling of wire breakage progression and rope fatigue life considering tension history 考虑张力历史的钢丝断裂进程和钢丝绳疲劳寿命的统计建模

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2026-03-15 Epub Date: 2025-12-17 DOI: 10.1016/j.engfailanal.2025.110476

Masatoshi Ogata , Atsushi Yamaguchi , Naoya Kurahashi , Kenta Yamagiwa

Wire ropes are extensively utilised in mechanical systems such as cranes and elevators, where they are subjected to repeated bending stresses under varying tension levels. This cyclic loading leads to progressive wire breakage and, ultimately, rope failure. To enhance the prediction of rope damage and optimise discard timing, this study proposes a statistical damage model that incorporates tension history. The model quantifies rope damage by evaluating the loss of cross-sectional area resulting from wire breakage. The progression of wire breakage is characterised using a Weibull distribution with tension-dependent parameters. A hierarchical Bayesian framework is employed to robustly estimate the failure probability parameters across different wire types within the rope. The validity of the model was demonstrated through fatigue tests conducted under constant, two-step, and multistep tension conditions. Compared with Miner’s rule, the proposed approach offers superior prediction accuracy for fatigue life and effectively captures the nonlinear progression of wire rope damage. Furthermore, the model accurately predicts rope damage from its initial state to the point of discard. These findings highlight the capability of the proposed method to quantitatively evaluate rope damage under various tension histories, thereby contributing to safer and more effective maintenance strategies.

钢丝绳广泛应用于起重机和电梯等机械系统中，在这些系统中，钢丝绳在不同的张力水平下承受反复的弯曲应力。这种循环载荷导致钢丝逐渐断裂，最终导致绳索失效。为了提高对绳索损伤的预测和优化丢弃时间，本研究提出了一个包含张力历史的统计损伤模型。该模型通过评估钢丝绳断裂造成的横截面积损失来量化钢丝绳的损伤。钢丝断裂的过程是用威布尔分布与张力相关的参数来表征的。采用层次贝叶斯框架对钢丝绳内不同钢丝类型的失效概率参数进行鲁棒估计。通过恒定、两步和多步拉伸条件下的疲劳试验，验证了该模型的有效性。与Miner规则相比，该方法具有更高的疲劳寿命预测精度，并能有效地捕捉钢丝绳损伤的非线性过程。此外，该模型准确地预测了绳索从初始状态到丢弃点的损伤。这些研究结果表明，该方法能够定量评估各种张力历史下的绳索损伤，从而有助于制定更安全、更有效的维护策略。

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引用次数: 0