Abstract
This paper studies the topology optimization for inner ribs of aluminum hollow extruded shell structures by using genetic algorithm. In the optimization, total mass of the structure is minimized under the constraint conditions with respect to maximum deflections of the structure. The deformation of the structure is evaluated numerically by using the finite element analysis developed for two-dimensional elasticity in the present study. In numerical calculations optimal design solutions are obtained for the structures by specifying the allowable maximum deflections of the structure, and the effect of topology of the ribs are studied from the numerical results obtained.
