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| Numerical simulation and design on energy absorption for thin wall multicellular structures of the local surface nanocrystallization |
| Received:April 30, 2020 Revised:July 07, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20200430001 |
| KeyWord:local surface nanocrystallization multicellular thin-walled structure energy absorption numerical simulation optimal design |
| Author | Institution |
| 王钧仡 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
| 仝真真 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 ;大连交通大学 机车车辆工程学院, 大连 |
| 王伟 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
| 屈建龙 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
| 徐新生 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
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| Abstract: |
| Adopting the technology of local surface nanocrystallization and method of numerical simulation,the energy absorption of multicellular thin-walled metal structures is researched by using finite element analysis and optimization design in this paper.Results show that the local surface nanocrystallization can induce buckling deformation of the structures and greatly improve the energy absorption.The results of optimization also show that the buckling deformation of the structures is stable and the effect of energy absorption is optimal under special conditions,in which the outer wall of the multicellular thin-walled structure is distributed by staggered rectangles of nanocrystallization and the inner additional structures are dispersed by framed nanocrystallization of uniformly distributed rectangular shapes.The results and conclusions provide a basis for the design of energy absorption structures. |