TY - JOUR

T1 - FEM Simulation Procedure for Distortion and Residual Stress Analysis of Wire Arc Additive Manufacturing

AU - Nursyahirah Binti Ahmad , Siti

AU - Manurung, Yupiter

AU - Mat, Muhd Faiz

AU - Minggu, Zaidi

AU - Jaffar, Ahmed

AU - Prüller, Simon

AU - Leitner, Martin

N1 - Publisher Copyright: © 2020 IOP Publishing Ltd. All rights reserved.

PY - 2020/6/22

Y1 - 2020/6/22

N2 - This fundamental research presents an investigation of Wire Arc Additive Manufacturing (WAAM) process on distortion and residual stress using numerical simulation. Further, WAAM geometry was modeled using simplified rectangular bead shape with five layers and three strings. The thermo-mechanical numerical simulation is conducted under consideration of non-linear isotropic hardening modeled by using general purposed FEM software MSC Marc/Mentat. In this simulation, different heat source models (Goldak's double-ellipsoid and rectangular) are implemented and compared, whereby the later model was to be developed by using subroutine provided in the software. For analyzing the residual stress, separation technique between wall and substrate was introduced after the cooling down period. The outcome of this research is to develop an effective procedure to analyze the distortion and residual stress of wire arc additive manufacturing of stainless steel.

AB - This fundamental research presents an investigation of Wire Arc Additive Manufacturing (WAAM) process on distortion and residual stress using numerical simulation. Further, WAAM geometry was modeled using simplified rectangular bead shape with five layers and three strings. The thermo-mechanical numerical simulation is conducted under consideration of non-linear isotropic hardening modeled by using general purposed FEM software MSC Marc/Mentat. In this simulation, different heat source models (Goldak's double-ellipsoid and rectangular) are implemented and compared, whereby the later model was to be developed by using subroutine provided in the software. For analyzing the residual stress, separation technique between wall and substrate was introduced after the cooling down period. The outcome of this research is to develop an effective procedure to analyze the distortion and residual stress of wire arc additive manufacturing of stainless steel.

UR - http://www.scopus.com/inward/record.url?scp=85087510787&partnerID=8YFLogxK

U2 - 10.1088/1757-899X/834/1/012083

DO - 10.1088/1757-899X/834/1/012083

M3 - Conference article

VL - 2020

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

SN - 1757-899X

IS - 834

M1 - 012083

ER -