Laser & Optoelectronics Progress, Volume. 49, Issue 5, 51405(2012)
Effect of Scanning Methods on Residual Stress Distribution and Thermal-Stress Couple Field During Direct Laser Metal Deposition Shaping
According to the “element life and death” technique of finite element method, with ANSYS parametric design language (APDL), we simulated the effects of long edge reciprocating scanning method, short edge reciprocating scanning method and direction orthogonal changing in different layers reciprocating scanning method to thermal-stress couple field and residual stress distribution during whole laser metal deposition shaping (LMDS) process. The dynamic regularities of thermal stress, temperature and residual stress distribution under different scanning methods are studied in detail. With the same process parameters, the samples fabricated by LMDS show good agreement with the simulation results.
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Kong Yuan, Liu Weijun, Wang Yuechao, Zhao Yuhui, Lai Youbin. Effect of Scanning Methods on Residual Stress Distribution and Thermal-Stress Couple Field During Direct Laser Metal Deposition Shaping[J]. Laser & Optoelectronics Progress, 2012, 49(5): 51405
Category: Lasers and Laser Optics
Received: Jan. 5, 2012
Accepted: --
Published Online: Mar. 26, 2012
The Author Email: Yuan Kong (ykong@sia.cn)