Prediction of residual stresses in multi-pass welded joint using Idealized Explicit FEM accelerated by a GPU

被引：45

作者：

Ikushima, Kazuki ^{[1
]}

Shibahara, Masakazu ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Grad Sch Engn, Naka Ku, Sakai, Osaka 5998531, Japan

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2014年 / 93卷

关键词：

Multi-pass welding; Residual stress; Thermal elastic plastic analysis; Idealized Explicit FEM; Parallelization; GPU;

D O I：

10.1016/j.commatsci.2014.06.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the simulation of welding problems, the simulation scale is usually limited to the welding joint level. To achieve a larger scale, the authors propose the Idealized Explicit Finite Element Method (IEFEM) for shorter computing time and lower memory consumption. In addition, the proposed IEFEM is parallelized by using a Graphics Processing Unit (GPU). The usefulness and validity of the developed method are investigated by analyzing a simple T-joint welding problem. A three-dimensional multi-pass moving heat source problem, which is very difficult to analyze with commercial FEM software because of its analytical scale, is analyzed to show the applicability of IEFEM to the large-scale welding problem. As a result, it is found that the parallelized IEFEM accelerated by a GPU on a single PC can analyze a large-scale problem having over 1,000,000 DOFs. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：62 / 67

页数：6

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