Techno Press
Techno Press

Structural Engineering and Mechanics   Volume 55, Number 5, September10 2015, pages 901-911
DOI: http://dx.doi.org/10.12989/sem.2015.55.5.901
 
Generation of OC and MMA topology optimizer by using accelerating design variables
Dongkyu Lee, Nguyen Hong Chan and Soomi Shin

 
Abstract     [Full Text]
    The goal of this study is to investigate computational convergence of optimal solutions, with respect to optimality criteria (OC) method and methods of moving asymptotes (MMA) as optimization model for non-linear programming of material topology optimization using an acceleration method that makes design variables rapidly move toward almost 0 and 1 values. 99 line topology optimization MATLAB code uses loop vectorization and memory pre-allocation as properly exploiting the strengths of MATLAB and moves portions of code out of the optimization loop so that they are only executed once as restructuring the program. Numerical examples of a simple beam under a lateral load and a given material density limitation provide merits and demerits of the present OC and MMA for 99 line topology optimization code of continuous material topology optimization design.
 
Key Words
    acceleration method; OC; MMA; MATLAB; topology optimization; convergence
 
Address
Dongkyu Lee and Nguyen Hong Chan: Department of Architectural Engineering, Sejong University, Seoul, 143-747, Korea
Soomi Shin: Research Institute of Industrial Technology, Pusan National University, Busan, 609-735, Korea
 

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