Numerical analysis and optimization of crashworthiness of bionic hierarchical thin-walled square tubes
In order to improve the energy absorption efficiency of the conventional thin-walled square tube, a bionic hierarchical thin-walled square tube (BHST) was proposed by the microscopic trabecular structure of beetle wing sheaths. Based on the super folding element theory, a theoretical model of the me...
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Editorial Office of Journal of Mechanical Strength
2024-06-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.03.013 |
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| author | XU Fei QIN RuiXian CHEN BingZhi |
| author_facet | XU Fei QIN RuiXian CHEN BingZhi |
| author_sort | XU Fei |
| collection | DOAJ |
| description | In order to improve the energy absorption efficiency of the conventional thin-walled square tube, a bionic hierarchical thin-walled square tube (BHST) was proposed by the microscopic trabecular structure of beetle wing sheaths. Based on the super folding element theory, a theoretical model of the mean crushing force of the bionic hierarchical thin-walled square tube was established. The axial energy absorption characteristics of the bionic hierarchical thin-walled square tube and the conventional multi-cell thin-walled square tube were analyzed by the nonlinear finite element method, and the influence of structural parameters on the crashworthiness of BHST4-2 structure was studied. The results show that the theoretical predictions match with the numerical simulation results, and the relative errors are all within 7%. The bionic hierarchical thin-walled square tube exhibits excellent crashworthiness. The wall thickness has a more significant effect on the crashworthiness of BHST4-2structure than the second-order square tube edge length. The radial basis function (RBF) model and the genetic algorithm were used for the multi-objective optimization of the BHST4-2 structure, and optimal al parameters of the structure were obtained. The results of the study provide new ideas for the design of thin-walled square tubes with excellent energy absorption properties. |
| format | Article |
| id | doaj-art-34b9f8f3f4c545d2990bab9ea6bbc55e |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2024-06-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-34b9f8f3f4c545d2990bab9ea6bbc55e2025-01-15T02:45:18ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692024-06-014661862563929930Numerical analysis and optimization of crashworthiness of bionic hierarchical thin-walled square tubesXU FeiQIN RuiXianCHEN BingZhiIn order to improve the energy absorption efficiency of the conventional thin-walled square tube, a bionic hierarchical thin-walled square tube (BHST) was proposed by the microscopic trabecular structure of beetle wing sheaths. Based on the super folding element theory, a theoretical model of the mean crushing force of the bionic hierarchical thin-walled square tube was established. The axial energy absorption characteristics of the bionic hierarchical thin-walled square tube and the conventional multi-cell thin-walled square tube were analyzed by the nonlinear finite element method, and the influence of structural parameters on the crashworthiness of BHST4-2 structure was studied. The results show that the theoretical predictions match with the numerical simulation results, and the relative errors are all within 7%. The bionic hierarchical thin-walled square tube exhibits excellent crashworthiness. The wall thickness has a more significant effect on the crashworthiness of BHST4-2structure than the second-order square tube edge length. The radial basis function (RBF) model and the genetic algorithm were used for the multi-objective optimization of the BHST4-2 structure, and optimal al parameters of the structure were obtained. The results of the study provide new ideas for the design of thin-walled square tubes with excellent energy absorption properties.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.03.013Bionic hierarchical thin-walled square tubeSuper folding element theoryParameter analysisCrashworthinessMulti-objective optimization |
| spellingShingle | XU Fei QIN RuiXian CHEN BingZhi Numerical analysis and optimization of crashworthiness of bionic hierarchical thin-walled square tubes Jixie qiangdu Bionic hierarchical thin-walled square tube Super folding element theory Parameter analysis Crashworthiness Multi-objective optimization |
| title | Numerical analysis and optimization of crashworthiness of bionic hierarchical thin-walled square tubes |
| title_full | Numerical analysis and optimization of crashworthiness of bionic hierarchical thin-walled square tubes |
| title_fullStr | Numerical analysis and optimization of crashworthiness of bionic hierarchical thin-walled square tubes |
| title_full_unstemmed | Numerical analysis and optimization of crashworthiness of bionic hierarchical thin-walled square tubes |
| title_short | Numerical analysis and optimization of crashworthiness of bionic hierarchical thin-walled square tubes |
| title_sort | numerical analysis and optimization of crashworthiness of bionic hierarchical thin walled square tubes |
| topic | Bionic hierarchical thin-walled square tube Super folding element theory Parameter analysis Crashworthiness Multi-objective optimization |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.03.013 |
| work_keys_str_mv | AT xufei numericalanalysisandoptimizationofcrashworthinessofbionichierarchicalthinwalledsquaretubes AT qinruixian numericalanalysisandoptimizationofcrashworthinessofbionichierarchicalthinwalledsquaretubes AT chenbingzhi numericalanalysisandoptimizationofcrashworthinessofbionichierarchicalthinwalledsquaretubes |