Topology Optimization of Structure for Impact Resistance Using Genetic Algorithm

• Main Authors: Chia-huei Lin, 林家暉
• Other Authors: Chun-yin Wu
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/85757542812059202834

碩士 === 大同大學 === 機械工程學系(所) === 93 === In order to improve the efficiency of processing affairs and fit the requirements of convenience and mobility of daily life，the demand for portable electronic products was increased dramatically. The specification for portable electronic products also became higher. The products, like notebook computer, PDA, cellular phone, MP3 player and mobile disk, were asked to be light、thin and small. They also should be drop resistance and waterproof to avoid malfunction caused by careless incident in our daily life. The weight became lighter and the thickness of case became thinner are the consistent requirements for portable electronic products. In order to protect quality of product, it is very important to construct a design system to support engineer with an effective design for different requirements. Designing structure with requirements of light、thin and impact resistance to avoid malfunction become an absolute important topic for portable electronic products. In this study the commercial computer-aided engineering software ANSYS/LS-DYNA will be used as the tool for analysis of different impact loading for structure. A genetic algorithm based optimization program will be integrated with ANSYS/LS-DYNA for multi-modal optimization for light and impact resistance structure. Some test functions were used to verify the correctness and performance of genetic algorithm optimization first. Then structure subjected static loadings was utilized to illustrate the application of the developed GA program in topology optimization of structure. Finally the integration system of genetic optimization program with ANSYS/LS-DYNA was applied to search structural topology for light and impact resistance.