A level-set based continuous scanning path optimization method for reducing residual stress and deformation in metal additive manufacturing

• Published in: Computer methods in applied mechanics and engineering Vol. 360; p. 112719
• Main Authors: Chen, Qian, Liu, Jikai, Liang, Xuan, To, Albert C.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.03.2020; Elsevier BV
• Subjects: Adaptive level set adjustment; Additive manufacturing; Computer simulation; Concurrent design; Continuous scanning path; Distortion; Level set method; Melting; Optimization; Powder beds; Residual stress; Residual stress mitigation; Scanning; Sensitivity analysis; Solidification; Strain analysis; Thermal simulation; Adaptive level set adjustment; Residual stress mitigation; Continuous scanning path; Level set method; Concurrent design

Thermal residual stress and distortion inherent in metal melting and solidification process is the main cause of build failure in metal additive manufacturing (AM) techniques such as laser powder bed fusion and directed energy deposition. To ensure build quality against residual stress/distortion, i...