Open Access

ARTICLE

Dynamic Mesh Refining and Iterative Substructure Method for FilletWelding Thermo-Mechanical Analysis

by Hui Huang, Hidekazu Murakawa

Computer Modeling in Engineering & Sciences 2015, 106(3), 187-201. https://doi.org/10.3970/cmes.2015.106.187

Abstract

Dynamic mesh refining method (DMRM) developed previously was extended to multi-level refinement, and employed to perform thermal-mechanical analysis of fillet welding. The DMRM has been successfully incorporated with another efficient technique, the iterative substructure method (ISM) to greatly enhance the computation speed of welding simulation. The basic concept, hierarchical modeling and computation flowchart are described for the proposed method. A flange-to-pipe welding problem has been solved with a commercial code and the novel method to demonstrate its high accuracy and efficiency. Furthermore, the numerical analysis was performed on a large scale stiffened welding structure, and comparison of welding deformation between simulation and measurement was shown.

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