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| Forward collision analysis and optimization method of body conceptual design based on plastic hinge theory |
| Received:April 05, 2019 Revised:August 28, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20190405002 |
| KeyWord:body design simplified model thin-walled beam plastic hinge crashworthiness |
| Author | Institution |
| 耿富荣 |
广州汽车集团股份有限公司汽车工程研究院, 广州 |
| 朱晋甫 |
大连理工大学 工业装备结构分析国家重点实验室 汽车工程学院, 大连 |
| 赵永宏 |
广州汽车集团股份有限公司汽车工程研究院, 广州 |
| 李健华 |
大连理工大学 工业装备结构分析国家重点实验室 汽车工程学院, 大连 |
| 侯文彬 |
大连理工大学 工业装备结构分析国家重点实验室 汽车工程学院, 大连 |
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| Abstract: |
| In the conceptual design stage,the evaluation of vehicle body collision safety performance is a difficult problem,which requires a detailed structural model.Based on the plastic hinge theory,this paper proposes a simplified model of beam elements to evaluate and optimize the crash-resistance of the frame body during the conceptual design stage.Firstly,the theoretical model and calculation process of Kecman's research on the bending characteristics of thin-walled box-section beams are introduced.Then,the plastic hinges of beam elements are given to simulate the deformation of thin-walled beams,and then the crash simulation of the frame body is carried out.The simulation results are compared with the detailed model to analyze the accuracy and reliability of the simplified model.Finally,the crashworthiness of the frame body is optimized.The results show that the simplified model is easy to create and has high precision,which can be used in the design of beam structures in conceptual design stage. |
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