压力容器2025，Vol.42Issue(4)：48-55,8.DOI:10.3969/j.issn.1001-4837.2025.04.007
基于修正固有应变法的选区激光熔化成形SK型静态混合器残余应力预测
Residual stress prediction for selective laser melting SK-type static mixers based on the modified inherent strain method
陈意 1周文奇 1张震 1巩建鸣 1耿鲁阳1
作者信息
- 1. 南京工业大学 机械与动力工程学院,南京 211816
- 折叠
摘要
Abstract
In view of the fact that the residual stress caused by the large temperature gradient during the selective laser melting(SLM)forming process affects the application range and service life of parts,the residual stress distribution of SLM-formed SK-type static mixers was predicted using the modified inherent strain(MIS)method.Then,SK-type static mixers of the same size were printed with the same process parameters,and their residual stress was measured using X-ray diffraction(XRD).The results show that the MIS method can efficiently and accurately predict the residual stress in SLM-formed SK-type static mixers.Compared with XRD measurements,the prediction error is less than 15%.The residual stresses of SLM-formed SK-type static mixers with different blade torsion angles were predicted,and it was found that the axial stress increases significantly with the increase of blade torsion angle.The findings can provide a reference for predicting the residual stress in SK-type static mixers.关键词
SK型静态混合器/选区激光熔化/固有应变法/残余应力Key words
SK-type static mixer/selective laser melting(SLM)/inherent strain method/residual stresses分类
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陈意,周文奇,张震,巩建鸣,耿鲁阳..基于修正固有应变法的选区激光熔化成形SK型静态混合器残余应力预测[J].压力容器,2025,42(4):48-55,8.
