TC4管状零件内壁加工残余应力计算及其有限元分析OA北大核心CSCDCSTPCD
Calculation of Residual Stress Induced by Machining in Internal Surface of TC4 Tubular Parts and Its FEA
针对残余应力对加工零件使用性能有严重影响以及 TC4材料难以用 X 射线法进行残余应力测量的现状，提出了一种通过测量外壁应变来计算 TC4管状零件内壁加工残余应力的方法。为验证该方法的正确性，在有限元软件中对模型内壁进行分层施加预定的随深度变化的残余应力，并用生死单元技术将内层单元逐层“杀死”来模拟实际实验中应力层被腐蚀的过程。根据外层不断变化的应变以及推导出的计算公式来计算内壁随深度变化的残余应力，并将计算得到的残余应力与之前所施加的应力进行对…查看全部>>
With respect to residual stresses had a strong effect on the usability of the parts and the residual stresses in the material of TC4 were hard to measure with XRD method,this paper briefly presented a method to calculate the residual stresses induced by machining in internal surface of TC4 tubular parts.In order to verify the correctness of the method,the residual stresses varying with depth were applied in internal surface of the model in FEA software,the t…查看全部>>
孟龙晖;何宁;李亮
南京航空航天大学，南京，210016南京航空航天大学，南京，210016南京航空航天大学，南京，210016
机械制造
残余应力有限元分析应变生死单元
residual stressfinite element analysis(FEA)strainelement birth and death
《中国机械工程》 2014 (19)
2583-2587,5
国防科技成果推广资助项目(C152012C002)国家科技重大专项(2012ZX04003021)高等学校博士学科点专项科研基金资助项目(20123218120025)
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