Boundary Condition Simulation for Structural Local Refined Modeling Using Genetic Algorithm

Abstract

Abstract. Structural dynamic strength evaluation is paid more attentions in aeronautics and astronautics engineering, and the structural local refined modelling technique which can be utilized to precisely calculate the dynamic strains in the critical local sites of the structure is the key issue in the structural dynamic strength evaluation. Firstly, four common methods, i.e. global / local two-step method, substructure method, transition element method and multi-point constraint (MPC) method, used in structural local refined modeling was reviewed. Then, a structural local refined modeling method, which uses simple physical models to simulate the effect of the surrounding structure on the local structure, is proposed based on Genetic Algorithm (GA). Finally, the proposed structural local refined modeling method was illustrated by simulative example of a four edges fixed aluminum rectangular plate.