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| Design of new honeycomb structure based on topology optimization |
| Received:February 28, 2022 Revised:April 09, 2022 |
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| DOI：10.7511/jslx20220228002 |
| KeyWord:zero Possion's ration honeycomb topology optimization large deformation low driving force high load capacity |
| Author | Institution |
| 刘浩 |
大连理工大学 工业装备结构分析优化与CAE软件全国重点实验室, 大连 ;大连理工大学 宁波研究院, 宁波 |
| 曹佳薇 |
中国航天科工飞航技术研究院创新研究院, 北京 |
| 高仁璟 |
大连理工大学 工业装备结构分析优化与CAE软件全国重点实验室, 大连 ;大连理工大学 宁波研究院, 宁波 |
| 王长生 |
大连理工大学 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
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| Abstract: |
| For deformable aircraft to achieve large changes in wing sweep angle,area,and leading and trailing edge curvature,the wing skin should have a smooth aerodynamic shape,allow large deformation,and have a high load capacity and small driving force.Aiming at the demands of a flexible skin,a new zero possion's-ratio honeycomb structure is designed by a topology optimization method,and the performance of the structure is verified by a finite element analysis and compared with a U-type honeycomb structure and cosine honeycomb structure.The deformation capacity of three structures is compared with the maximum strain of 2%.The tensile deformation of the new honeycomb structure is up to 75%,which is 1.7 times that of U-type honeycomb structure and 2.1 times that of the cosme-type ycomb structure.The new honeycomb structure has high deformability.When the maximum displacement is the same,the required driving force is 0.51 times and 0.28 times of the U-type structure and the cosine-shaped honeycomb structure,respectively.The new honeycomb structure has a high load capacity.When the rubber skin of the honeycomb structure is under the same pressure load and in the initial unstretched state or stretched state,the maximum normal displacement of the new honeycomb structure skin is small,which is 0.4 times or 0.56 times that of the U-type honeycomb structure skin,0.29 times or 0.42 times that of cosine honeycomb structure skin.In addition,by appropriately increasing the wall thickness,the bending resistance of the new honeycomb structure can be significantly improved.Analysis results show that the new honeycomb structure designed in this paper has the advantages of high deformability,high load capacity and low driving force. |
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