基于固有应变法的不锈钢车体车顶焊接变形仿真

李树栋; 祝航; 戴忠晨; 占小红; 赵文勇

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基于固有应变法的不锈钢车体车顶焊接变形仿真
Simulation of welding deformation of stainless steel vehicle roof based on intrinsic strain method
2018年48卷第8期页码：9-12
DOI：

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李树栋, 祝航, 戴忠晨, 等. 基于固有应变法的不锈钢车体车顶焊接变形仿真[J]. 电焊机, 2018,48(8):9-12.

LI Shudong, ZHU Hang, DAI Zhongchen, et al. Simulation of welding deformation of stainless steel vehicle roof based on intrinsic strain method[J]. 2018,48(8):9-12.
李树栋, 祝航, 戴忠晨, 等. 基于固有应变法的不锈钢车体车顶焊接变形仿真[J]. 电焊机, 2018,48(8):9-12. DOI：

LI Shudong, ZHU Hang, DAI Zhongchen, et al. Simulation of welding deformation of stainless steel vehicle roof based on intrinsic strain method[J]. 2018,48(8):9-12. DOI：

摘要

焊接变形一直是工程实际中需要解决的问题,传统的热弹塑性理论无法解决大尺寸构件的仿真,采用固有应变理论在工程中进行焊接变形仿真具有计算成本低、速度快、有一定准确性的特点。采用固有应变理论对某不锈钢地铁车辆车顶的焊接变形进行仿真,并调整相应工艺后再次仿真,最后通过与三维实测数据对比验证仿真结果的准确性,为后续解决大尺寸构件的焊接变形仿真提供借鉴。

Abstract

Welding deformation is always a problem that needs to be solved in engineering practice. The traditional thermal elastoplastic theory can not solve the simulation of large-size components. Using intrinsic strain theory to simulate welding deformation in engineering has the characteristics of low cost, fast speed and accuracy. The welding deformation of a certain stainless steel metro vehicle roof is simulated by using the intrinsic strain theory,and the simulation is performed again after adjusting corresponding technology. Finally,the accuracy of the simulation results is verified by comparing with the three-dimensional measured data,so as to provide reference for the welding deformation simulation of large-size component.