Study on the Correlativity between Grinding Parameters and Surface Residual Stresses in Ceramic
Study on the Correlativity between Grinding Parameters and Surface Residual Stresses in Ceramic
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DOI：
10.4028/www.scientific.net/kem.375-376.480
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发表时间：
2008-03
期刊：
影响因子：
--
通讯作者：
Guang Zhang;B. Lin;Zhenhao Shi
中科院分区：
文献类型：
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作者：
Guang Zhang;B. Lin;Zhenhao Shi
通过磨削陶瓷过程的动态有限元模拟，预测了工件表面和亚表面残余应力的产生和分布。模拟的基础是采用热弹塑性有限元理论以及磨削力与温度的耦合。 X射线衍射测量得到的结果与理论计算值吻合良好。研究了磨削参数与陶瓷残余应力之间的相关性。研究结果表明，法向磨削力是磨削陶瓷时残余应力产生的首要因素。晶粒的机械效应会影响残余应力的大小、穿透深度和梯度。
The generation and distribution of workpiece surface and sub-surface residual stress were predicted through the dynamic finite element simulation of the grinding ceramic process. The base of the simulation is that the thermo elastic-plastic finite element theory and the coupling of grinding forces and temperature were adopted. The results obtained from X-ray diffraction measurement compared well with the values calculated from theory. The correlation between grinding parameters and the ceramic residual stresses was investigated. The research results show that the normal grinding force is the primary factor responsible for the generation of residual stress in grinding ceramic. The mechanical effect of the grains is to affect the magnitude, the depth of penetration and the gradient of the residual stresses.