In this paper, a multi-step optimization using a G.A(Genetic Algorithm) with variable penalty function is introduced to the structural design optimization of a 5-head route machine. The first stage of the design optimization is static design optimizat...
In this paper, a multi-step optimization using a G.A(Genetic Algorithm) with variable penalty function is introduced to the structural design optimization of a 5-head route machine. The first stage of the design optimization is static design optimization. The following stage is dynamic design optimization stage. In the static optimization stage, the static compliance and weight of the structure are minimized simultaneously under some dimensional constraints and deflection limits. On the other hand, the dynamic compliance and the weight of the machine structure are minimized simultaneously in the dynamic design optimization stage. The proposed design optimization method was successfully applied to the 5-head router machine design optimization. As the results, static and dynamic compliances of the 5-head router machine have decreased by 48.73% and 56.71% respectively compared with the initial design. On the other hand the weight of the structure has increased by 6.06%. However, this increasing result is enough because it satisfy the conditions of the weight constraint.