Time-dependent reliability analysis of underground vehicle's parts based on multi-crack propagation

被引：0

作者：

Shi, Bo-Qiang ^{[1
]}

Tang, Ge-Teng ^{[1
]}

机构：

[1] School of Mechanical Engineering, Beijing University of Science and Technology

来源：

Dongbei Daxue Xuebao/Journal of Northeastern University | 2014年 / 35卷 / 01期

关键词：

Multi-crack; Reliability; Time-dependent; Uncertainty; Underground vehicle;

D O I：

10.3969/j.issn.1005-3026.2014.01.023

中图分类号：

学科分类号：

摘要：

Considering the existence of multi-crack damage in underground vehicle's parts, the torsion fatigue test for simulating the fatigue damage was built. The surface crack after certain fatigue cycles was further measured by telephoto microscope and camera, and the Paris model and residual strength estimation model were used to process the data for residual intensity. Then, the time-dependent reliability mathematical model was used to calculate the drift rate and fluctuation rate of time-variant intensity, and finally educed the reliability. This method solves the problem of dynamic detection of parts' time varying intensity when using time-dependent theory, and advances the time-dependent theory to the engineering application. It has a good application prospect.

引用

页码：97 / 100

页数：3

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