现代制造工程Issue(11)：65-69,5.DOI:10.16731/j.cnki.1671-3133.2017.11.012
基于梯度降温的叠层制备热残余解析解
Thermal residual solutions to laminated object manufacturing with gradient cooling
摘要
Abstract
Laminated object manufacturing results in thermal residual stresses and deformation due to its high temperature techniques.Cooling gradients occurs due to the time differences in manufacturing processes.Considering the temperature gradients through thickness in manufacturing processes,the analytical solutions of thermal residual stresses and deformations are built.There are several cooling gradient models due to different manufacturing techniques.It is shown in numerical examples that cooling gradients result in thermal residual phenomenon through thickness.The effects of cooling gradient models on thermal residual stresses are discussed.The model can reasonably explain the bending deformation due to the cooling gradients in a workpieces.Bending deformation is actually a self-regulation mechanism to reduce residual stresses in the workpiece,which means that increasing the bending deformation can reduce the thermal residual stresses.This work provides a rehable theoretical basis for the optimization of laminated object manufacturing.关键词
叠层制备/三维打印/热残余应力/解析解Key words
laminated object manufacturing/3 D printing/thermal residual stress/analytical solutions分类
机械制造引用本文复制引用
王荣亮,舒小平..基于梯度降温的叠层制备热残余解析解[J].现代制造工程,2017,(11):65-69,5.基金项目
江苏省重点学科资助项目(苏财教[2014]-98-96) （苏财教[2014]-98-96）
