Fully Stressed Structure Design Using Ranked BESO

摘要

Ranked Bidirectional Evolutionary Structural Optimization (R-BESO) method is one of the topology optimization using the evolutionary algorithm. The method may get an optimum design at less iteration number comparing with the previous several ESO methods. It includes the displacement sensitivity analysis by nodal displacement to determine the rank for each free edge or free surface of the candidate elements having any free edge or free surface. In this study, developed RBESO method is introduced to search the topology of a fully stressed structure under several mechanical environments. Considered design problems are nozzle problems, which are 2 dimensional axisymmetric structures, and a bracket problem, which is a 3 dimensional structure.