Topology optimization study of electric locomotive underframe front-end structure crashworthiness
In order to improve crashworthiness of electric locomotives, this paper presents a dynamic topology optimization study aimed at improving the crashworthiness at the underframe's front end of a certain model of electric locomotives. Firstly, a finite element model of the electric locomotives was...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2024-01-01
|
| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2024.01.105 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849323499123900416 |
|---|---|
| author | GU Peng QI Hongrui ZHU Tao XIAO Shoune ZHANG Jinke WANG Xiaorui |
| author_facet | GU Peng QI Hongrui ZHU Tao XIAO Shoune ZHANG Jinke WANG Xiaorui |
| author_sort | GU Peng |
| collection | DOAJ |
| description | In order to improve crashworthiness of electric locomotives, this paper presents a dynamic topology optimization study aimed at improving the crashworthiness at the underframe's front end of a certain model of electric locomotives. Firstly, a finite element model of the electric locomotives was established, and the main path of energy flow in the underframe was identified by dynamic topology optimization analysis based on hybrid cellular automata. Then, according to the structural characteristics of the electric locomotive body, the front-end structure of the underframe was optimized in design and the inclusion of aluminum honeycomb energy absorbing materials. Finally, the finite element models before and after optimization were compared through the collision simulation calculation. The results reveal a significant reduction in peak acceleration, with the optimized car body at 402.56 m/s<sup>2</sup>, which is 39.29% lower than value before optimization of 663.04 m /s<sup>2</sup>. Additionally, the peak interface force upon collision is reduced by 35.71% after optimization. These findings demonstrate the rationality and effectiveness of topology optimization design in improving the crashworthiness of this specific locomotive model's structures. |
| format | Article |
| id | doaj-art-91660f2b7a124249bebd6abfcf154000 |
| institution | Kabale University |
| issn | 1000-128X |
| language | zho |
| publishDate | 2024-01-01 |
| publisher | Editorial Department of Electric Drive for Locomotives |
| record_format | Article |
| series | 机车电传动 |
| spelling | doaj-art-91660f2b7a124249bebd6abfcf1540002025-08-20T03:49:02ZzhoEditorial Department of Electric Drive for Locomotives机车电传动1000-128X2024-01-01313847315426Topology optimization study of electric locomotive underframe front-end structure crashworthinessGU PengQI HongruiZHU TaoXIAO ShouneZHANG JinkeWANG XiaoruiIn order to improve crashworthiness of electric locomotives, this paper presents a dynamic topology optimization study aimed at improving the crashworthiness at the underframe's front end of a certain model of electric locomotives. Firstly, a finite element model of the electric locomotives was established, and the main path of energy flow in the underframe was identified by dynamic topology optimization analysis based on hybrid cellular automata. Then, according to the structural characteristics of the electric locomotive body, the front-end structure of the underframe was optimized in design and the inclusion of aluminum honeycomb energy absorbing materials. Finally, the finite element models before and after optimization were compared through the collision simulation calculation. The results reveal a significant reduction in peak acceleration, with the optimized car body at 402.56 m/s<sup>2</sup>, which is 39.29% lower than value before optimization of 663.04 m /s<sup>2</sup>. Additionally, the peak interface force upon collision is reduced by 35.71% after optimization. These findings demonstrate the rationality and effectiveness of topology optimization design in improving the crashworthiness of this specific locomotive model's structures.http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2024.01.105electric locomotivecrashworthiness of locomotivedynamic topology optimizationhybrid cellular automataaluminum honeycomb |
| spellingShingle | GU Peng QI Hongrui ZHU Tao XIAO Shoune ZHANG Jinke WANG Xiaorui Topology optimization study of electric locomotive underframe front-end structure crashworthiness 机车电传动 electric locomotive crashworthiness of locomotive dynamic topology optimization hybrid cellular automata aluminum honeycomb |
| title | Topology optimization study of electric locomotive underframe front-end structure crashworthiness |
| title_full | Topology optimization study of electric locomotive underframe front-end structure crashworthiness |
| title_fullStr | Topology optimization study of electric locomotive underframe front-end structure crashworthiness |
| title_full_unstemmed | Topology optimization study of electric locomotive underframe front-end structure crashworthiness |
| title_short | Topology optimization study of electric locomotive underframe front-end structure crashworthiness |
| title_sort | topology optimization study of electric locomotive underframe front end structure crashworthiness |
| topic | electric locomotive crashworthiness of locomotive dynamic topology optimization hybrid cellular automata aluminum honeycomb |
| url | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2024.01.105 |
| work_keys_str_mv | AT gupeng topologyoptimizationstudyofelectriclocomotiveunderframefrontendstructurecrashworthiness AT qihongrui topologyoptimizationstudyofelectriclocomotiveunderframefrontendstructurecrashworthiness AT zhutao topologyoptimizationstudyofelectriclocomotiveunderframefrontendstructurecrashworthiness AT xiaoshoune topologyoptimizationstudyofelectriclocomotiveunderframefrontendstructurecrashworthiness AT zhangjinke topologyoptimizationstudyofelectriclocomotiveunderframefrontendstructurecrashworthiness AT wangxiaorui topologyoptimizationstudyofelectriclocomotiveunderframefrontendstructurecrashworthiness |