摘要
Explosion and impact loadings pose a serious threat to the service safety of defense and industrial equipment. Energy-absorbing materials can effectively reduce structural vibration and the damage caused by impact. Traditional energy-absorbing materials,such as aluminum foam,have a relatively limited design space. Therefore,it is urgent to develop new energy-absorbing materials. In this paper,the energy-absorbing mechanism of porous materials was systematically investigated based on numerical modelling of the impact process. The simulation results indicate that energy-absorbing materials can have a good shock absorption performance only when the strength is appropriate. In order to realize customized design of energy-absorbing materials,shell-based mechanical metamaterials with different energy-absorbing characteristics were designed based on the machine learning and genetic algorithm. The effectiveness of the newly designed metamaterials in energy-absorption and vibration-attenuation was verified through simulation results. This study can provide important technical guidelines for the design and optimization of new energy-absorbing materials.
投稿的翻译标题 | Energy-Absorption and VibrationAttenuation Design Using Shell-Based Mechanical Metamaterials |
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源语言 | 繁体中文 |
页(从-至) | 1032-1039 |
页数 | 8 |
期刊 | Tongji Daxue Xuebao/Journal of Tongji University |
卷 | 52 |
期 | 7 |
DOI | |
出版状态 | 已出版 - 7月 2024 |
关键词
- energy absorption
- porous materials
- shell-based mechanical metamaterials
- vibration attenuation