期刊
APPLIED MATHEMATICAL MODELLING
卷 35, 期 2, 页码 688-707出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2010.07.026
关键词
Welding simulation; FEM; Solids mechanics; Thermal stresses
资金
- European Community [AST 5-CT 2006-030953]
- Project RAPOLAC (Rapid Production of Large Aerospace Components)
- CONICET (Consejo Nacional de Investigaciones Cientificas y Tecnicas, Argentina)
- UNL (Universidad Nacional del Litoral, Argentina)
This work deals with the simulation of fusion welding by the Finite Element Method. The implemented models include a moving heat source, temperature dependence of thermophysical properties, elasto-plasticity, non-steady state heat transfer, and mechanical analysis. The thermal problem is assumed to be uncoupled from the mechanical one, so the thermal analysis is performed separately and previously to the mechanical analysis at each time step. The mechanical problem is based on the thermal history. A special treatment is performed on mechanical elements during the liquid/solid and solid/liquid phase changes to account for stress states. The three-dimensional stress state of a butt-welded joint is obtained as an example of an application. (C) 2010 Elsevier Inc. All rights reserved.
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