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首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >CONTACT ANALYSES FOR BODIES WITH FRICTIONAL HEATING AND PLASTIC BEHAVIOR
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CONTACT ANALYSES FOR BODIES WITH FRICTIONAL HEATING AND PLASTIC BEHAVIOR

机译：具有摩擦加热和塑性行为的机构的接触分析

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摘要

The stress field within machine components is an important indicator for contact failures. Since both thermal stresses due to frictional heating and plasticity are significant in engineering application, it is critical to predict the total stress field. In this work, the steady- state thermal effect is considered and a thermo-elastic-plastic contact model is developed. The model is applicable for rolling and/or sliding contact problem, as far as small equivalent plastic strain hypothesis is respected. Influence coefficients for surface normal displacement, temperature, and strain and stress tensors are used with the discrete convolution and fast Fourier transform algorithm. The single-loop conjugate gradient iteration scheme is also applied to achieve fast convergence speed. Simulations are presented for several academic examples ranging from elastic to thermo-elastic-plastic.
机译：机器组件内的应力场是接触故障的重要指标。由于摩擦加热和可塑性引起的热应力在工程应用中都很重要，因此预测总应力场至关重要。在这项工作中，考虑了稳态热效应并建立了热弹塑性接触模型。该模型适用于滚动和/或滑动接触问题，只要遵守小的等效塑性应变假设即可。离散卷积和快速傅里叶变换算法使用表面法向位移，温度以及应变和应力张量的影响系数。单环共轭梯度迭代方案也可用于实现快速收敛速度。针对从弹性到热弹塑性的几个学术实例进行了仿真。

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