Residual Stress and Deformation Modelling for Metal Additive Manufacturing Processes
Metal additive Manufacturing has gained increasing attention in the area of rapid manufacturing and repairing. This process involves extremely high thermal gradients and heat and cooling rate, resulting in residual stresses and distortion. This paper presents a 3D sequentially coupled thermo-mechanical finite element model to predict residual stresses and deformations. The temperature distribution, thermal stress field and geometry deformation across domain are illustrated. The effect of deposition parameters on residual stress and deflections are also explored. A set of validation experiments for mechanical effects were conducted using laser displacement sensor. The comparisons between the simulated and experimental results show good agreement.
H. Liu et al., "Residual Stress and Deformation Modelling for Metal Additive Manufacturing Processes," Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering (2015, Barcelona, Spain), Avestia Publishing, Jul 2015.
World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015 (2015: Jul. 20-21, Barcelona, Spain)
Mechanical and Aerospace Engineering
Keywords and Phrases
Additive manufacturing; Deformation; Experimental validation; Finite element analysis; Residual stress
International Standard Book Number (ISBN)
International Standard Serial Number (ISSN)
Article - Conference proceedings
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