International Journal of Crashworthiness最新文献_第9页

Study on impact performance and optimisation of the CRH380 high-speed train traction converter cooling unit CRH380高速列车牵引变流器冷却机组冲击性能及优化研究

4区工程技术

International Journal of Crashworthiness Pub Date : 2023-09-14 DOI: 10.1080/13588265.2023.2258656

Jing Tao, Zhewen Chong, Yongsheng Jiang, Tao Li

{"title":"Study on impact performance and optimisation of the CRH380 high-speed train traction converter cooling unit","authors":"Jing Tao, Zhewen Chong, Yongsheng Jiang, Tao Li","doi":"10.1080/13588265.2023.2258656","DOIUrl":"https://doi.org/10.1080/13588265.2023.2258656","url":null,"abstract":"AbstractThe reliability of the traction converter, a core component in the power traction system of the CRH380 EMU equipment, is heavily reliant on the performance of its cooling unit. The service life of the cooling unit is primarily impacted by its material performance. In order to investigate the material performance of the cooling unit, an impact model was established by using the finite element method. The stress distribution of the cooling unit, made of different materials, was analysed under various impact loads. The accuracy of the calculation results was verified through experiments. The research results show that stress concentration and cracks were identified in the cooling unit of the initial material when subjected to different impact loads. Consequently, an improvement scheme was proposed, which resulted in reduced deformation of the cooling unit, enhanced damage resistance, and an overall mass reduction of approximately 138 kg. These improvements can effectively increase the service life of the cooling unit. The research findings can serve as a reference for further research and optimisation of cooling unit materials.Keywords: High-speed traintraction converter cooling unitmaterial impact performanceservice lifefinite element method (FEM) Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Additional informationFundingThe authors are grateful for the support from the Youth Funding Project of Hubei Polytechnic University (No. 21xjz03Q) and the open project of Intelligent Transportation Technology and Equipment of Hubei Provincial Key Laboratory (No. 2020XZ109).","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134970221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating crashworthiness of W-Beam guardrail crash barriers 研究w梁护栏防撞护栏的耐撞性

4区工程技术

International Journal of Crashworthiness Pub Date : 2023-09-14 DOI: 10.1080/13588265.2023.2258628

Pratik Tambe, Gaurav Tiwari, Nikhil Andraskar, Udit Jain

{"title":"Investigating crashworthiness of W-Beam guardrail crash barriers","authors":"Pratik Tambe, Gaurav Tiwari, Nikhil Andraskar, Udit Jain","doi":"10.1080/13588265.2023.2258628","DOIUrl":"https://doi.org/10.1080/13588265.2023.2258628","url":null,"abstract":"AbstractThis study presents the evaluation of safety performance of the blocked-out W-Beam guardrail crash barrier system designed as per the ‘Guidelines for traffic safety barriers’ published by Indian Road Congress (IRC:119-2015). A finite element model of the W-Beam guardrail was developed in Hyper-Mesh and the simulation of the crash analysis was performed in LS-Dyna. Results from the simulation were used to study the compliance of the barrier with the test acceptance criteria of the NCHRP 350 report for containment level TL-3 as mentioned in the IRC: 119-2015. Finite element models of 820c passenger car and 2000p pickup truck developed by NCAC were imported to the guardrail model for crash simulation according to the test designation 3-10 and 3-11. As per the acceptance criteria of the NCHRP report 350 for containment level TL-3, the obtained simulation results were examined to verify the compliance and performance of the guardrail. It was concluded that the crash barrier was compliant with test 3-10 but not with 3-11. Further, simulations for TL-1 (test 1-11) were also conducted since the barrier failed to meet the NCHRP criteria for pickup truck impacting at 100 km/h. It was found that the barrier fulfilled the criteria for pickup truck impact with 50 km/h velocity.Keywords: W-beam guardrailcrash barrierroadside safety barriernchrp 350 Disclosure statementNo potential conflict of interest was reported by the authors.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134970231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of material strain hardening on energy absorption of axially loaded steel tubular members via first wrinkling mechanism 材料应变硬化对首次起皱轴向载荷钢管构件吸能的影响

4区工程技术

International Journal of Crashworthiness Pub Date : 2023-09-14 DOI: 10.1080/13588265.2023.2258640

Alireza Nazari, Farid Taheri

{"title":"Influence of material strain hardening on energy absorption of axially loaded steel tubular members via first wrinkling mechanism","authors":"Alireza Nazari, Farid Taheri","doi":"10.1080/13588265.2023.2258640","DOIUrl":"https://doi.org/10.1080/13588265.2023.2258640","url":null,"abstract":"AbstractExperimental investigations have revealed that the crushing response of axially loaded tubular metallic members changes significantly depending on the strain-hardening capacity of the material. In this paper, the post-yield response of axially loaded stainless-steel and mild-steel tubes are examined under quasi-static loading from the perspective of deformation-controlled and force-controlled collapse mechanisms. The rotational instability of the plastic hinges developed along the tubes is traced numerically by considering an isolated plastic hinge model selected at the critical length of the tubes’ shell. The characteristics of the hinges are probed using the moment-rotation diagrams. The stress profiles in the critical region of the tubes at various loading states are investigated. It is observed that the tubes’ stability and energy absorption capacity are significantly dependent on the strain-hardening capacity of the material exploited during the formation of the plastic hinges.Keywords: Steel tubular membersplastic hingeelephant’s foot modestrain-hardeningisolated plastic hinge (IPH) Author contributionsAlireza Nazari: conceptualisation, methodology, acquisition of data, analysis and/or interpretation of data, writing – original draft; Farid Taheri: analysis and/or interpretation of data, supervision, writing – review & editing.Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134970532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lightweight design of automotive front rail based on topology optimisation and collision analysis 基于拓扑优化和碰撞分析的汽车前导轨轻量化设计

4区工程技术

International Journal of Crashworthiness Pub Date : 2023-09-14 DOI: 10.1080/13588265.2023.2253036

Xuejing Du, Huixin Liang

{"title":"Lightweight design of automotive front rail based on topology optimisation and collision analysis","authors":"Xuejing Du, Huixin Liang","doi":"10.1080/13588265.2023.2253036","DOIUrl":"https://doi.org/10.1080/13588265.2023.2253036","url":null,"abstract":"AbstractOn the premise of meeting the crash performance, in order to reduce the weight of the front rail of the automotive and improve the level of lightweight of the vehicle.Combining with the goal of ‘carbon reduction‘, a method of topology optimisation was used to optimise the lightweight performance of automotive front rail.Topology optimisation takes the front rail of the automobile as the research object, the installation area of the front rail as the design space of topology optimisation, the minimum strain energy as the optimisation goal, the relative density of the grid of each element as the design variable, and the mass fraction of the front rail as a constraint to design the topology optimisation. Then the optimal material distribution of the front rail of the vehicle is obtained. On this basis, the geometric dimensions of the section of the front rail are multi-objective optimised, the sample data are designed and the response surface model of optimisation objective are established through the design of the Latin square experiment. Based on the NSGA-II algorithm, the optimised mathematical model is solved by multi-objective optimisation. The results show that the weight of the optimised structure is reduced by 6.5% compared with the original structure, and the collision absorption energy is improved, and the peak acceleration is significantly reduced.Keywords: The front railtopology optimisationlightweightcrash resistance Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Natural Science Foundation of China [51108068].","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134910939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural design and self-locking performance verification of the snap-fit spatial self-locking energy absorption system under the impact loading 冲击载荷下卡合式空间自锁吸能系统的结构设计及自锁性能验证

4区工程技术

International Journal of Crashworthiness Pub Date : 2023-09-12 DOI: 10.1080/13588265.2023.2253040

Tieping Wei, Wanpeng Liu, Wu Yang, Shoujin Zeng, Xiaolei Yan, Jinquan Guo

引用次数: 0

3D simulations and laboratory experiments to evaluate a dynamic airbag valve 三维仿真和实验室实验评估动态气囊阀

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2023-09-08 DOI: 10.1080/13588265.2023.2252214

Naveen Shirur, Christian Birkner, Matthias Bleeck, Andreas Forster, T. Deserno, Roman Henze

引用次数: 0

The multi-objective reliability-based design optimisation of buffering characteristics of airbag seat in manned airdrop 基于多目标可靠性的载人空投安全气囊座椅缓冲特性设计优化

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2023-08-29 DOI: 10.1080/13588265.2023.2252216

Xin Liu, Weiwei Guo, Lei Huang, Zhenhua Zhou, Tianrui Li, Lin Hu

引用次数: 0

Evaluation of risk injury in pedestrians’ head and chest region during collision with an autonomous bus 行人与自动驾驶公共汽车碰撞时头部和胸部损伤风险评估

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2023-08-28 DOI: 10.1080/13588265.2023.2250499

Md Mobasshir Rashid, Farhad Farzaneh, M. Seyedi, Sungmoon Jung

引用次数: 0

Axial crashworthiness of double-hat beams with various ribs 不同肋双帽梁的轴向耐撞性

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2023-08-23 DOI: 10.1080/13588265.2023.2247216

Wenjie Gan, Qi‐Quan Li, Weiwei Liu, Tengyu Ma, Xin Liu, Cong Mao, Long Huang

引用次数: 0

Correction 校正

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2023-08-13 DOI: 10.1080/13588265.2023.2241001

引用次数: 0