计算力学学报2025，Vol.42Issue(6)：889-896,8.DOI:10.7511/jslx20240827002
面向增材制造过程的改进固有应变分析方法
Improved inherent strain analysis method for additive manufacturing processes
摘要
Abstract
Additive manufacturing has become a critical means of realizing industrial equipment manufacturing.However,its products sometimes exhibit issues such as excessive residual stress or deformation.The inherent strain analysis method can be effectively used to simulate the additive manufacturing process,providing an important basis for addressing this issue.However,the traditional inherent strain method employs the same inherent strain value assumption,which neglects the uneven distribution of residual strain across different regions of the additively manufactured parts,as well as the accumulation of residual strain caused by material remelting.These can lead to insufficient computational accuracy for certain structures.To overcome this problem,this paper proposes an improved inherent strain analysis method based on a zonal assignment strategy.These method first obtains the spatial distribution pattern of inherent strain values based on a standard model and calculates the inherent strain values for elements within different characteristic regions.Then,for the finite element model of the analysis object,all elements are divided into zones based on their spatial positions,and corresponding material properties are assigned to conduct the inherent strain simulation.Numerical example results show that the proposed zonal inherent strain analysis method provides better computational accuracy with similar computation time.关键词
固有应变/数值仿真/金属增材制造/残余应力/残余变形Key words
inherent strain/numerical simulation/metal additive manufacturing/residual stress/residual deformation分类
数理科学引用本文复制引用
YAN Kun,LIU Yi,ZHAO Yanguang,YAN Jun..面向增材制造过程的改进固有应变分析方法[J].计算力学学报,2025,42(6):889-896,8.基金项目
国家自然科学基金(12432005 （）
12472116)资助项目. （）
