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.
{"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":"145 1","pages":"0"},"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}
Pub Date : 2023-09-14DOI: 10.1080/13588265.2023.2258640
Alireza Nazari, Farid Taheri
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).
{"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":"45 1","pages":"0"},"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}
Pub Date : 2023-09-14DOI: 10.1080/13588265.2023.2253036
Xuejing Du, Huixin Liang
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].
{"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":"19 1","pages":"0"},"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}
There are increasingly high performance requirements of energy-absorbing systems in aerospace, defense and military, transportation and other fields, especially in the field of emergency protection where the study of self-locking characteristics is of great significance. In this paper, an energy absorption system is designed by snap-fit thin-walled tubes, which can be edited, easy to assemble quickly and spatial omnidirectional self-locking, and the spatial self-locking characteristic of the system was verified by numerical simulation under the uniform/concentrated impact loadings. The results show that the energy-absorbing system can withstand the uniform/concentrated impact loadings in all directions in space. Furthermore, the good comprehensive performance of the loading condition in direction 3 (α = 90 deg, β = 0 deg) was verified by the quantitative analysis of the complex proportional assessment (COPRAS) method and the qualitative analysis of Radar Diagram method.
{"title":"Structural design and self-locking performance verification of the snap-fit spatial self-locking energy absorption system under the impact loading","authors":"Tieping Wei, Wanpeng Liu, Wu Yang, Shoujin Zeng, Xiaolei Yan, Jinquan Guo","doi":"10.1080/13588265.2023.2253040","DOIUrl":"https://doi.org/10.1080/13588265.2023.2253040","url":null,"abstract":"There are increasingly high performance requirements of energy-absorbing systems in aerospace, defense and military, transportation and other fields, especially in the field of emergency protection where the study of self-locking characteristics is of great significance. In this paper, an energy absorption system is designed by snap-fit thin-walled tubes, which can be edited, easy to assemble quickly and spatial omnidirectional self-locking, and the spatial self-locking characteristic of the system was verified by numerical simulation under the uniform/concentrated impact loadings. The results show that the energy-absorbing system can withstand the uniform/concentrated impact loadings in all directions in space. Furthermore, the good comprehensive performance of the loading condition in direction 3 (α = 90 deg, β = 0 deg) was verified by the quantitative analysis of the complex proportional assessment (COPRAS) method and the qualitative analysis of Radar Diagram method.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135826264","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}
Pub Date : 2023-09-08DOI: 10.1080/13588265.2023.2252214
Naveen Shirur, Christian Birkner, Matthias Bleeck, Andreas Forster, T. Deserno, Roman Henze
{"title":"3D simulations and laboratory experiments to evaluate a dynamic airbag valve","authors":"Naveen Shirur, Christian Birkner, Matthias Bleeck, Andreas Forster, T. Deserno, Roman Henze","doi":"10.1080/13588265.2023.2252214","DOIUrl":"https://doi.org/10.1080/13588265.2023.2252214","url":null,"abstract":"","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44590390","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}
Pub Date : 2023-08-29DOI: 10.1080/13588265.2023.2252216
Xin Liu, Weiwei Guo, Lei Huang, Zhenhua Zhou, Tianrui Li, Lin Hu
{"title":"The multi-objective reliability-based design optimisation of buffering characteristics of airbag seat in manned airdrop","authors":"Xin Liu, Weiwei Guo, Lei Huang, Zhenhua Zhou, Tianrui Li, Lin Hu","doi":"10.1080/13588265.2023.2252216","DOIUrl":"https://doi.org/10.1080/13588265.2023.2252216","url":null,"abstract":"","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45617983","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}
Pub Date : 2023-08-28DOI: 10.1080/13588265.2023.2250499
Md Mobasshir Rashid, Farhad Farzaneh, M. Seyedi, Sungmoon Jung
{"title":"Evaluation of risk injury in pedestrians’ head and chest region during collision with an autonomous bus","authors":"Md Mobasshir Rashid, Farhad Farzaneh, M. Seyedi, Sungmoon Jung","doi":"10.1080/13588265.2023.2250499","DOIUrl":"https://doi.org/10.1080/13588265.2023.2250499","url":null,"abstract":"","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47219382","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}
Pub Date : 2023-08-09DOI: 10.1080/13588265.2023.2241224
Markus Fasching, Alessio Sevarin, Christian Ellersdorfer
{"title":"Investigate the elastoplastic deformation behaviour of a motorcycle frame under different mechanical load configurations","authors":"Markus Fasching, Alessio Sevarin, Christian Ellersdorfer","doi":"10.1080/13588265.2023.2241224","DOIUrl":"https://doi.org/10.1080/13588265.2023.2241224","url":null,"abstract":"","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49288542","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}
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