Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box
Based on the lightweight characteristics of automotive energy absorption boxes and the requirement of good energy absorption effect, this article first applies the node-enhanced body centered cubic (NBCC) lattice structure to the inner core design of automotive energy absorption boxes. The gradient...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/21/6893 |
| _version_ | 1797631642716602368 |
|---|---|
| author | Bin Wu Qiulong Chen Fuyuan Liu Min Chen Yi Lu Di Jiang Yang Yi |
| author_facet | Bin Wu Qiulong Chen Fuyuan Liu Min Chen Yi Lu Di Jiang Yang Yi |
| author_sort | Bin Wu |
| collection | DOAJ |
| description | Based on the lightweight characteristics of automotive energy absorption boxes and the requirement of good energy absorption effect, this article first applies the node-enhanced body centered cubic (NBCC) lattice structure to the inner core design of automotive energy absorption boxes. The gradient study of the NBCC lattice structure was carried out using a drop hammer impact and split Hopkinson pressure bar (SHPB). The results indicate that gradient lattice structures have advantages in energy absorption, but there are differences under different gradient strategies. When the impact is not sufficient to compact the structure, the vertical rod diameter gradient node-enhanced lattice structure (RGNBCC) can absorb more energy and improve energy absorption performance by 25%. The vertical height gradient node-enhanced lattice structure (HGNBCC) is more suitable for high-speed impact conditions. Based on the advantages of the RGNBCC in resisting low-speed impacts, it is applied to the inner core design of automotive energy absorption boxes and optimized using multi-objective optimization methods. The optimization results show that the maximum peak impact force is reduced by 45.6% and the specific energy absorption is increased by 30.4%. |
| first_indexed | 2024-03-11T11:26:18Z |
| format | Article |
| id | doaj.art-696ea6530c9b4af29a052a6af7d90b04 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T11:26:18Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-696ea6530c9b4af29a052a6af7d90b042023-11-10T15:07:15ZengMDPI AGMaterials1996-19442023-10-011621689310.3390/ma16216893Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing BoxBin Wu0Qiulong Chen1Fuyuan Liu2Min Chen3Yi Lu4Di Jiang5Yang Yi6College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, ChinaSchool of Advanced Technology, Xi’an Jiaotong-Liverpool University, Suzhou 215123, ChinaSchool of Advanced Technology, Xi’an Jiaotong-Liverpool University, Suzhou 215123, ChinaCollege of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, ChinaBased on the lightweight characteristics of automotive energy absorption boxes and the requirement of good energy absorption effect, this article first applies the node-enhanced body centered cubic (NBCC) lattice structure to the inner core design of automotive energy absorption boxes. The gradient study of the NBCC lattice structure was carried out using a drop hammer impact and split Hopkinson pressure bar (SHPB). The results indicate that gradient lattice structures have advantages in energy absorption, but there are differences under different gradient strategies. When the impact is not sufficient to compact the structure, the vertical rod diameter gradient node-enhanced lattice structure (RGNBCC) can absorb more energy and improve energy absorption performance by 25%. The vertical height gradient node-enhanced lattice structure (HGNBCC) is more suitable for high-speed impact conditions. Based on the advantages of the RGNBCC in resisting low-speed impacts, it is applied to the inner core design of automotive energy absorption boxes and optimized using multi-objective optimization methods. The optimization results show that the maximum peak impact force is reduced by 45.6% and the specific energy absorption is increased by 30.4%.https://www.mdpi.com/1996-1944/16/21/6893graded lattice structuredynamic mechanicsstructure optimizationautomobile energy absorbing box |
| spellingShingle | Bin Wu Qiulong Chen Fuyuan Liu Min Chen Yi Lu Di Jiang Yang Yi Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box Materials graded lattice structure dynamic mechanics structure optimization automobile energy absorbing box |
| title | Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box |
| title_full | Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box |
| title_fullStr | Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box |
| title_full_unstemmed | Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box |
| title_short | Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box |
| title_sort | study on dynamic mechanics of node enhanced graded lattice structure and application optimization in automobile energy absorbing box |
| topic | graded lattice structure dynamic mechanics structure optimization automobile energy absorbing box |
| url | https://www.mdpi.com/1996-1944/16/21/6893 |
| work_keys_str_mv | AT binwu studyondynamicmechanicsofnodeenhancedgradedlatticestructureandapplicationoptimizationinautomobileenergyabsorbingbox AT qiulongchen studyondynamicmechanicsofnodeenhancedgradedlatticestructureandapplicationoptimizationinautomobileenergyabsorbingbox AT fuyuanliu studyondynamicmechanicsofnodeenhancedgradedlatticestructureandapplicationoptimizationinautomobileenergyabsorbingbox AT minchen studyondynamicmechanicsofnodeenhancedgradedlatticestructureandapplicationoptimizationinautomobileenergyabsorbingbox AT yilu studyondynamicmechanicsofnodeenhancedgradedlatticestructureandapplicationoptimizationinautomobileenergyabsorbingbox AT dijiang studyondynamicmechanicsofnodeenhancedgradedlatticestructureandapplicationoptimizationinautomobileenergyabsorbingbox AT yangyi studyondynamicmechanicsofnodeenhancedgradedlatticestructureandapplicationoptimizationinautomobileenergyabsorbingbox |