基于固有应变法的焊接残余应力数值模拟集成插件设计

董昊; 王博士; 沐卫东; 蔡艳

doi:10.7512/j.issn.1001-2303.2020.11.05

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基于固有应变法的焊接残余应力数值模拟集成插件设计
Integrated plug-in of numerical simulation modeling for welding residual stress based on inherent strain method
2020年50卷第11期页码：23-27
DOI： 10.7512/j.issn.1001-2303.2020.11.05

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董昊, 王博士, 沐卫东, 等. 基于固有应变法的焊接残余应力数值模拟集成插件设计[J]. 电焊机, 2020,50(11):23-27.

DONG Hao, WANG Boshi, MU Weidong, et al. Integrated plug-in of numerical simulation modeling for welding residual stress based on inherent strain method[J]. 2020,50(11):23-27.
董昊, 王博士, 沐卫东, 等. 基于固有应变法的焊接残余应力数值模拟集成插件设计[J]. 电焊机, 2020,50(11):23-27. DOI： 10.7512/j.issn.1001-2303.2020.11.05.

DONG Hao, WANG Boshi, MU Weidong, et al. Integrated plug-in of numerical simulation modeling for welding residual stress based on inherent strain method[J]. 2020,50(11):23-27. DOI： 10.7512/j.issn.1001-2303.2020.11.05.

摘要

基于固有应变法的数值模拟是一种常用的焊接结构残余应力模拟方法,其计算量小,适用于结构复杂、焊缝众多的场合。运用Abaqus实现固有应变法焊接数值模拟需要操作者具有较强的软件运用能力,建立大型构件并施加大量焊缝的固有应变时操作量很大,且包含大量重复操作,耗费大量时间。设计了一款基于Abaqus平台的焊接固有应变法数值模拟建模的集成插件,该插件通过解析计算法获得焊缝的固有应变数值,划分焊缝区域并施加固有应变,进行模型完善并建立模拟作业。插件简化了固有应变法数值模拟的操作流程,降低了软件的使用门槛,计算结果可靠性高,满足工程应用要求,可用于实际结构设计和评估。

Abstract

Inherent strain method is a commonly used welding numerical simulation method,which has a small amount of calculation and is suitable for large structures with multiple welding seams. The use of Abaqus to realize the intrinsic strain method requires the operator to have a strong software appli-cation ability. The operation of building a simulation model for a large structure with many welding seams is very large,and it involves a lot of repeated operations,which takes a lot of time.This paper designs a plug-in for welding numerical simulation modeling using inherent strain method in Abaqus platform. The plug-in uses the analytical calculation method to obtain the inherent strain values,divides the weld area and applies the inherent strain,completes the model,and establishes the sim-ulation job. The plug-in simplifies the modeling process and lowers the threshold of software using. The reliability of the calculation results meets the requirements of engineering application and can be used in the actual structural design and evaluation.