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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >Research on grind-hardening layer and residual stresses based on variable grinding forces
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Research on grind-hardening layer and residual stresses based on variable grinding forces

机译:基于可变研磨力的研磨硬化层和残余应力研究

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摘要

This paper analyzes the grinding force variation of grind-hardening process and proposes a simulation model to predict the residual stress profile based on the variable grinding forces. Time-dependent grinding force is discretized to calculate the heat flux intensity, which is applied on the actual contact length for the grinding temperature field, and the harden layer depth along the workpiece length is predicted. After that, the mechanical and thermal stress field is calculated with the results of variable grinding forces and grinding temperature, respectively. The loading stresses are coupled into an elastic-plastic structural analysis to estimate the residual stresses by defining indicator variables. Experimental results on the residual stress and the harden layer profile have validated the theoretical model.
机译:本文分析了研磨硬化过程的研磨力变化,并提出了一种基于可变研磨力来预测残余应力分布的模拟模型。 被离散化的时间依赖研磨力以计算施加在用于研磨温度场的实际接触长度上的热通量强度,并且预测沿工件长度的硬化层深度。 之后,通过可变研磨力和研磨温度的结果计算机械和热应力场。 装载应力耦合到弹性塑料结构分析中以通过定义指示器变量来估计残余应力。 对残余应力和硬化层剖面的实验结果验证了理论模型。

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