| Title |
A Study on Structural Topology Optimization by Evolutionary Structural Optimization(ESO) Method |
| Authors |
Pyeon Hae-Wan ; Ohmori Hiroshi ; Jeong Se-Hyoung ; Kang Moon-Myung |
| Keywords |
Evolutionary Structural Optimization Method ; Topology Optimization |
| Abstract |
The purpose of this study is to improve convergence speed of topology optimization procedure for the plane and space structures using the existing ESO method. At the existing ESO topology optimization procedure for the plane and space structures, the adjustment of member sizes according to target stress has been executed by increasing or reducing a very small value from each member size. In this case, it takes too much iteration till convergence. Accordingly, it is practically hard to abtain optimum topology for a large scale structures. For that reason, it is necessary to improve convergence speed of ESO method more effectively. During the topology decision procedure, member sizes are adjusted by calculating approximate solution for member sizes corresponding to the target stress at every step, the new member sizes are adjusted by such method are applied in FEA procedure of next step. The member size adujusting methods for frame and truss structures are suggested in this study are Newton-Raphson method and direct stress corresponding method respectively. |