| 논문명 |
구멍의 초기위상과 설계변수 가속법을 이용한 구조물의 위상최적화 / Structural Topology Optimization using Initial Topology of Hole and Accelerating Method of Design Variable - Improvement of Optimization Convergence - / 최적화 수렴성의 개선과 관련하여 |
| 수록사항 |
대한건축학회지회연합회 논문집, v.13 n.03 (통권47호) (2011-09) |
| 주제어 |
위상최적 ; 수렴 ; 설계변수 ; 가속법 ; 이동과 정규화된 heaviside 함수 ; 초기 구멍 ; Topology Optimization ; Convergence ; Design Variable ; Accelerating Method ; Moved and Regularized Heaviside Function ; Initial Hole ; Bubble Method |
| 요약2 |
This Study proposes the introduction of the hole in initial design and an accelerating method of design variable as new methods for the optimization of convergence of topology. The accelerating method of design variable implements a "moved and regularized Heaviside function" and improves the movement velocity of design variable. Since this function is defined as the combination of concave and convex function in domain between 0 and 1, design variables under 0.5 move fast toward value of 0 and those over 0.5 are rapidly transferred to value of 1. Introduction of initial hole enforces changes of topology by finite changes of design variable and therefore improves the convergence of optimization. In this study, the effects of the introduction of the initial hole and the accelerating method of design variables in the density distribution method of topology optimization are verified with numerical examples of linear elastostatic structures. |
