Paper Title:
Numerical Simulation of Multi-Pass Welding Distortion in Membrane Water-Wall
  Abstract

This work deals with the welding simulation by the Finite Element Method (FEM). For the tube plate welding structure features of Membrane water-wall, the numerical computation method is applied to do the real-time simulation research on the temperature field and stress field during the welding process. The implemented models include a moving heat source, temperature dependence of thermo-physical 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 established simulation analysis method of welding temperature and stress field can provide theory foundation and direction for optimizing the welding structure design and standardizing the welding parameter.

  Info
Periodical
Advanced Materials Research (Volumes 383-390)
Chapter
Chapter 15: Coatings and Surface Engineering
Edited by
Wu Fan
Pages
3898-3903
DOI
10.4028/www.scientific.net/AMR.383-390.3898
Citation
X. Zhang, S. L. Tu, G. X. Tao, Z. F. Zhao, "Numerical Simulation of Multi-Pass Welding Distortion in Membrane Water-Wall", Advanced Materials Research, Vols. 383-390, pp. 3898-3903, 2012
Online since
November 2011
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Price
$32.00
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