Abstract
This paper studies the topology optimization of cantilevered beam-type, extruded aluminum structures subjected to multiple combination loadings by genetic algorithm. In optimization, total strain energy of the structure is minimized under a constraint condition, where total number of inner ribs within the structure is kept to be constant, by selecting the locations of the ribs. The deformation of the structure is evaluated by using the finite element analysis developed for two-dimensional elasticity in this study. In numerical calculations optimal design solutions are obtained for the structures subjected to multiple combinations of bending, shearing and stretching loadings.
