Structural optimization-based additive manufacturing runner design method considering suspension angle constraint

• Main Authors: BAO YUHAO, KANG ZHAN, LIU DI, ZHANG XIAOPENG, HUO ZEKAI
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2024
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PERFORMING OPERATIONS; PHYSICS; TRANSPORTING

A structural optimization-based additive manufacturing flow channel design method considering a suspension angle constraint belongs to the field of structural and multidisciplinary optimization design, and comprises two parts of describing a flow channel section shape by adopting a spline curve and exporting the suspension angle constraint according to a level set function. And describing the section shape of the runner, ensuring that the shape of the runner is closed by constraining the value of a control point, and exporting an expression of the suspension angle constraint according to a level set function. The optimization design variable is a spline curve control point, the optimization target is minimum dissipation of the fluid flowing through the pipeline, and the constraints comprise a suspension angle constraint and a volume fraction ratio constraint. Sensitivity information is obtained according to a difference method, and the sensitivity information is substituted into a moving asymptote method to o