Simulation on the Transient Thermal Stress Field of the Wall-Shaped Part Deposited by Laser Direct Metal Powder Deposition

Abstract:

A thermo-kinetic model for the transient thermal stress field of the wall-shaped part produced using laser direct powder deposition process is developed. In case of numerical modeling, the capabilities of ANSYS parametric design language and the the ‘birth and death’ element technique were employed. The distribution of the thermal stress of the wall-shaped part at different time was calculated by the model. Results show that during process, the X-direction thermal stress within top layer of the wall-shape part and that within the interior deposited layers of the wall-shape part was tensile stress and compressive stress, respectively. The deformation of the wall-shaped part and base plate was also calculated.

• Periodical: Advanced Materials Research (Volume 647)
• Pages: 659-663
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.647.659
• Online since: January 2013
• Authors: Ming Zhe Xi
• Keywords: 316L Stainless Steel Powder, Finite Element Analysis (FEA), Laser Direct Powder Deposition, Transient Thermal Stress Field

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