Experimental and Numerical Study of Transient Distortion in Titanium Alloy Tig Welding
In this paper, the convex distortion and transient distortion characteristics of TIG welding for a titanium alloy with finite dimensional thin plate were investigated experimentally and numerically. A three dimensional thermal-mechanical finite element method (FEM) was adopted to predict the characteristics of Transient distortion by taking the initial shape, gravity loading and restriction conditions into account. The simulation results were validated by the experimental results. The results show that the numerical simulations could provide accurate prediction on the Transient temperature and distortion processing. The temperature gradient through thickness, the dimension of plate and the clamping were main factors governing the distortion during welding.
R. Wang et al., "Experimental and Numerical Study of Transient Distortion in Titanium Alloy Tig Welding", Applied Mechanics and Materials, Vol. 137, pp. 403-407, 2012