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| Improved topology optimization method for moving morphable components |
| Received:March 15, 2023 Revised:May 28, 2023 |
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| DOI：10.7511/jslx20230315002 |
| KeyWord:topology optimization moving morphable components finite element analysis sensitivity analysis Russian roulette algorithm |
| Author | Institution |
| 李鹏 |
华东交通大学 机电与车辆工程学院, 南昌 ;载运工具与装备教育部重点实验室, 华东交通大学, 南昌 |
| 程文涛 |
华东交通大学 机电与车辆工程学院, 南昌 |
| 杜艺博 |
华东交通大学 机电与车辆工程学院, 南昌 |
| 丁瀛 |
华东交通大学 机电与车辆工程学院, 南昌 |
| 占金青 |
华东交通大学 机电与车辆工程学院, 南昌 |
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| Abstract: |
| In order to solve the problem that the optimization result of the classical moving morphable components (MMC) is easily affected by the component initialization,the improved MMC based on the double cycle mechanism is designed.The inner loop is based on the classical MMC to realize fast optimization.The outer loop implements the Russian roulette algorithm based on the component contribution rate,then selects,deletes and replaces some components,and finally introduces the reconstructed structure into the inner loop for further optimization.The optimization examples of an MBB beam and a short cantilever beam show that,compared with the classical MMC,the improved MMC can overcome the influence of component initialization on optimization results,and obtain better optimization results,although the operation cost is significantly increased. |
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