残余应力
机械加工
表面完整性
有限元法
残余物
趋同(经济学)
压力(语言学)
结构工程
流动应力
流量(数学)
可塑性
过程(计算)
材料科学
机械工程
计算机科学
工程类
机械
复合材料
算法
应变率
语言学
经济
哲学
经济增长
物理
操作系统
作者
André Luiz Rocha D’ Oliveira,Ronnie Rego,Alfredo R. de Faria
标识
DOI:10.1016/j.jmatprotec.2019.116332
摘要
Manufactured components are submitted to thermo-mechanical loads that can blemish their surface integrity and change the inherent residual stress distribution. The discontinuous machining process is relevant to the integrity conception because of their potential application at the end of the manufacturing chain. In order to consolidate a method to predict the residual stress state with a reduced CPU effort, this paper addresses the prediction of residual stress fields resulting from the milling process. The approach is using the hybrid FEM approach combined with the analysis of the plastic flow. The results obtained point out to the validity of the combination of the hybrid method and the visualization of the equivalent stress and equivalent strain rates. Moreover, a direct correspondence between the references and experimental dataset was observed, even when the input data for the model is associated with macro-loads obtained by piezoelectric platform measurements. The determination of the stress state as residual stress in mainly associated to the mesh convergence and the time to equilibrate the plastic flow. A conclusion is drawn regarding the viability of applying the same combination for other manufacturing processes.
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