A Comparison between Parametric Structural Optimization Methods and Software-Based Topology Optimization of A Rectangular Sample Under Tensile Load for Additive Manufacturing Processes

摘要

This article presents three methods of structural optimization for a rectangular sample under tensile load to minimize von Mises stress as an objective function. In the first method, namely the position-finding method, the initial volume is reduced by cut-extrusion of some circular holes with a uniform volume gradient along the length of the sample. In this method, the position of each hole is manipulated by using a genetic algorithm (GA) to achieve the minimum von Mises stress versus a specific tensile load. In the second method, namely geometry optimization method, several circular holes with different diameters are cut-extruded with monotonically decreasing volume gradient...