Reliability modeling of pre-stressed composite structures subject to interlayer slip failure under multi-axial random impact and vibration loads

IF 3 3区工程技术 Q2 ENGINEERING, MECHANICAL

Probabilistic Engineering Mechanics Pub Date : 2024-06-12 DOI:10.1016/j.probengmech.2024.103650

Xiaochang Duan , Junpeng Shan , Chaoyang Xie , Jingjing He , Xuefei Guan

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引用次数: 0

Abstract

A time-dependent reliability model for pre-stressed metal/polymer/metal composite structures subject to interlayer slip failure is developed in this study, allowing for predicting the probability of failure of the whole structure under multi-axial random multi-peak impact loads and transport vibration. A multi-Gaussian envelope model with uniform modulations is proposed to model random multi-peak impact loads, and the inverse sampling method is employed to model random transport vibration. An interlayer slip physics model is developed based on the contact surface friction mechanism under multi-axial vibration load and the stress-relaxation constitutive model. By implementing the interlayer slip physics model in the finite element method framework via the user-material routine, the geometry effect of the structure can be dealt with, and the reliabilities at an arbitrary location of the structure can be obtained. The proposed method is demonstrated using engineering examples. The results show that the proposed reliability assessment method provides a viable and systematical procedure of computing the time-dependent reliability of composite structures as a whole under multi-axial impact loads and vibrations.

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预应力复合材料结构在多轴向随机冲击和振动载荷作用下发生层间滑移破坏的可靠性建模

本研究针对预应力金属/聚合物/金属复合材料结构层间滑移失效问题，建立了与时间相关的可靠性模型，可预测整个结构在多轴向随机多峰值冲击载荷和传输振动作用下的失效概率。研究提出了具有均匀调制的多高斯包络模型来模拟随机多峰值冲击载荷，并采用反采样法来模拟随机传输振动。基于多轴振动载荷下的接触面摩擦机理和应力松弛构成模型，建立了层间滑移物理模型。通过用户材料例程在有限元法框架中实施层间滑移物理模型，可以处理结构的几何效应，并获得结构任意位置的可靠性。我们利用工程实例对所提出的方法进行了演示。结果表明，所提出的可靠性评估方法为计算复合材料结构整体在多轴冲击载荷和振动下随时间变化的可靠性提供了一个可行的系统程序。

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来源期刊

Probabilistic Engineering Mechanics 工程技术-工程：机械

CiteScore

3.80

自引率

15.40%

发文量

审稿时长

13.5 months

期刊介绍： This journal provides a forum for scholarly work dealing primarily with probabilistic and statistical approaches to contemporary solid/structural and fluid mechanics problems encountered in diverse technical disciplines such as aerospace, civil, marine, mechanical, and nuclear engineering. The journal aims to maintain a healthy balance between general solution techniques and problem-specific results, encouraging a fruitful exchange of ideas among disparate engineering specialities.