| Autor: |
DING Mao, GENG Da, ZHOU Mingdong, LAI Xinmin |
| Jazyk: |
čínština |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Shanghai Jiaotong Daxue xuebao, Vol 55, Iss 6, Pp 764-773 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1006-2467 |
| DOI: |
10.16183/j.cnki.jsjtu.2019.301 |
| Popis: |
In structural strength topology optimization based on the variable density method, there are gray cells in the optimization result, making it difficult to accurately predict the structural stress which changes greatly before and after post-processing. This paper uses a filter-projection-based structural parameterization method to achieve a continuous decrease in the proportion of structural intermediate density units during the iterative optimization process. By studying the influence of the main optimization parameters of the structural ratio strength problem on the optimization process and structural strength optimization, a novel optimization strategy of structural topology optimization followed by approximate shape optimization is proposed, which realizes the accurate control of the change of structural stress during the optimization process, achieveing structural strength optimization while improving the stability of the optimization process. Typical optimization examples verify the rationality and practicability of the proposed optimization method. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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