| Title |
A Study on the Topology Optimization of Beam Structures with the Initial Design Domain of Partial Solid and Void Phases |
| Authors |
Lee Dong-Kyu ; Shin Soo-Mi |
| Keywords |
Topology Optimization ; Convergence ; Design Variable ; Initial Solid ; Initial Void ; Initial Design Domain |
| Abstract |
This study shows structural topology optimization by the design domain with partial phases of solids and voids in order to improve convergence of optimization. Conventionally, an initial design domain is composed of intermediate solid regions. Since there is no difference among neighboring element density values in this initial design domain, it is very difficult to enforce finite changes of design variables during the initial several stages of optimization, As a result, slow convergence may occur and surely it is slow during the starting several iterations. In the present work, the initial design domain is defined by partially compulsory depositions of different material regions. These phases can be defined as initial holes or solids with varied shapes. The proper number of the partial phases must be also considered in the design domain. This method results in fast convergence since changes of topology activate through finite changes of design variables during the optimization procedures. Numerical example of beam structures demonstrate the efficiency of the proposed approach. |