Modified Strategies For Automatic Shape Optimization Based on Optimal Structural Topology

• Main Author: 林琮敏
• Other Authors: 林 其 禹
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/38894006020717674848

碩士 === 國立臺灣科技大學 === 機械工程系 === 92 === In size optimization and shape optimization, the shape of structure and settings of design variables defined by experience and knowledge of engineers always determin the optimization result. The automatic shape optimization can be achieved by integrating topology optimization, image processing technique, hole stretch strategy and shape optimization. Unfortunately, the existing automatic shape optimization method can''t handle the interventions between holes or outline and holes. A conservative strategy of design variable setting is used to avoid interventions occurred and it also restricts the search space of optimization. In this paper, modified strategies of automatic shape optimization method were introduced. Since the intervention problem can be solved by proposed intervention treatment strategy, a modified hole stretch strategy can be applied to make design variables multiplex and extend the bounds of design variables and theatrically improve the varieties of structure shape. The automatic shape optimization with modified strategies was tested in five shape optimization problems and obtained great optimization result in each test problem.