FEM SIMULATION FOR LASER FORMING PROCESSING

作     者：L.Q.Li Y.B.Chen X.Y Wang S.Y Lin 

作者机构：State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China Harbin Research Institute of Welding Harbin 150001 ChinaState Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China Harbin Research Institute of Welding Harbin 150001 ChinaHarbin Research Institute of Welding Harbin 150001 ChinaHarbin Research Institute of Welding Harbin 150001 China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2004年第17卷第3期

页      面：317-322页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Harbin Institute of Technology Foundation(HIT. 2002.30) 

主　　题：laser forming FEM simulation temperature fields stress distributton 

摘      要：Laser forming involves heating sheet metal workpiece along a certain path with a defocused laser beam directed irradiate to the surface. During laser forming, a tran- sient temperature fields is caused by the irradiation and travelling of a laser beam. Consequently, thermal expansion and contraction take place, and allows the thermal- mechanical forming of complex shapes. This is a new manufacturing technique that forming metal sheet only by thermal stress. Therefore, the analysis of temperature fields and stress fields are very useful for studying the forming mechanism and con- trolling the accuracy of laser forming. The non--liner finite element solver, MARC, is employed to solve the thermal--mechanical analysis. Using this model, the stress and strain distribution of pure aluminum plate with different thickness are analyzed. The influence of scanning speed on temperature fields and plastic strain of metal sheet un- der the condition of constant line energy are also presented. Numerical results agree well with the experimental results.