广西科技大学学报2024，Vol.35Issue(2)：136-144,9.DOI:10.16375/j.cnki.cn45-1395/t.2024.02.017
基于热-弹塑性-蠕变-相对密度耦合本构模型的热等静压数值模拟
Hot isostatic pressure numerical simulation based on thermo-elastoplastic-creep-relative density coupled constitutive model
摘要
Abstract
Powder metallurgy hot lsostatic pressing to near-not-shape(PM-HIP-NNS)technology is used to prepare complex components with high performance,and has a good application prospect in powder metallurgy industry.The densification process has special mechanical behavior,which needs to be combined with numerical simulation to reduce the waste of material and financial resources caused by trial and error in the experimental process.Based on the thermo-elastoplastic-creep-relative density coupling constitutive model,the finite element numerical simulation of the compression process of SS316L powder material in SS304 ladle capsule material was carried out in this paper,and the changes of powder density field,temperature field and stress field during HIP process were investigated.The results show that the numerical simulation of metal powder forming law under high temperature and high pressure is consistent with the experiment,which confirms that the model can reasonably predict the deformation behavior of metal powder under high temperature and high pressure,and provides an important basis for the optimization of powder HIP process.关键词
有限元/热等静压/相对密度/本构模型/包套Key words
finite element/hot isostatic pressure/relative density/constitutive model/capsule分类
能源科技引用本文复制引用
李勇进,马迎松,屈浩宇,樊力中..基于热-弹塑性-蠕变-相对密度耦合本构模型的热等静压数值模拟[J].广西科技大学学报,2024,35(2):136-144,9.基金项目
广西高校中青年教师科研基础能力提升项目(2019KY0379) （2019KY0379）
广西科技基地和人才专项项目(桂科AD19110111)资助 （桂科AD19110111）
