电焊机2017，Vol.47Issue(10)：1-7,7.DOI:10.7512/j.issn.1001-2303.2017.10.01
基于固有应变法的地铁侧墙FSW焊接变形仿真
Simulation of FSW deformation of subway sidewall based on inherent strain method
摘要
Abstract
Mitigating welding deformation is indispensable in the welding process of aluminum alloy subway sidewall.In response to this issue,the friction stir welding process of f 6005a-t6 aluminum alloy subway sidewall is simulated by inherent strain method based on sequential thermodynamic coupling method.A three-dimensional thermal elastic-plastic finite element analysis of the local structure of the sidewall is carried out firstly by using combined heat source and sequential thermodynamic coupling method.The results are extracted and the inherent strain is calculated.And then,the model of full-scale aluminum alloy subway sidewall is carried out with elastoplasticity calculation to obtain the results of welding deformation.The calculated results are compared with the experimental measurement results.The result shows that the simulated welding deformation of the sidewall has the same distribution trend as the experiment result,and the error between the simulated welding deformation and the experimental measurement value is within 20％,which provides the theoretical basis for the practical production of subway sidewall.关键词
搅拌摩擦焊/固有应变法/顺序热力耦合法/焊接变形Key words
friction stir welding/inherent strain method/sequential thermodynamic coupling method/welding deformation分类
矿业与冶金引用本文复制引用
迟哲,刘亚良,王陆钊,杨鑫华..基于固有应变法的地铁侧墙FSW焊接变形仿真[J].电焊机,2017,47(10):1-7,7.基金项目
国家自然科学基金(51175054) （51175054）
辽宁省科学技术计划项目资助(2011220039) （2011220039）
辽宁特聘教授项目 （）
