中国机械工程Issue(19)：2583-2587,5.DOI:10.3969/j.issn.1004-132X.2014.19.006
TC4管状零件内壁加工残余应力计算及其有限元分析
Calculation of Residual Stress Induced by Machining in Internal Surface of TC4 Tubular Parts and Its FEA
摘要
Abstract
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 technology of element birth and death was used to “kill”the elements in internal surface layer by layer to simulate the process of corrosion in experiments.And the residual stresses were calculated based on the changing strains on the external surface of the part and the deduced formulas,and then the calculated residual stresses were contrasted to the stresses that were applied to the model.It can be found that the accuracy of the calculated residual stress is very high,so it can be concluded that this method can be applied to meas-ure the residual stress in practice.关键词
残余应力/有限元分析/应变/生死单元Key words
residual stress/finite element analysis(FEA)/strain/element birth and death分类
机械制造引用本文复制引用
孟龙晖,何宁,李亮..TC4管状零件内壁加工残余应力计算及其有限元分析[J].中国机械工程,2014,(19):2583-2587,5.基金项目
国防科技成果推广资助项目(C152012C002) （C152012C002）
国家科技重大专项(2012ZX04003021) （2012ZX04003021）
高等学校博士学科点专项科研基金资助项目(20123218120025) （20123218120025）
