An FSRW numerical simplification approach for vehicle frontal crashworthiness analysis

Liang, Rui; Liu, Xi; Hu, Yuling; Ren, Lihai; Bastien, Christophe

doi:10.1080/13588265.2021.2009687

Cited by 3 publications

(3 citation statements)

References 26 publications

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“…The safety belt on the car Armrest Back seat belt Buckle body is pulled out from its retractor, passed through the slip ring of the back seatbelt of the foldable booster safety seat, the dummy chest, and then through the armrest of the child seat after contacting the slip ring on the rear seat of the car. A typical acceleration data based on the Taurus frontal collision finite element model in an NHTSA rigid wall frontal 56km/h crash test [28], was applied as input to the sled test. The acceleration field experienced by the rear seat occupant is illustrated in Fig.…”

Section: Sled Test Modelmentioning

confidence: 99%

Effectiveness analysis of a foldable booster safety seat with integrated seatbelt buckle for reducing children’s vehicle accident injury risk

Liang

Liu

et al. 2022

International Journal of Crashworthiness

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：Vehicle collisions may result in severe injuries to child passengers. These accidents are of concern to the automotive community; hence child restraint systems are now subjected to legislative requirements. New foldable child safety seats are a new technology that has the potential for spacesaving whilst protecting children from injuries. For the first time, this paper proposes to evaluate the safety of such a foldable seat, considering multiple frontal impact directions. The research created a baseline 6-year-old HybridIII child sled test computer model, built from a correlated vehicle rear seat cabin interior environment model and including its crash pulse characteristics, in which various seat safety configurations were evaluated. A total of seven scenarios were investigated, considering no booster seat, a traditional booster seat, and a foldable booster seat, combined with different impact angles, including frontal impact (0°), near and far side impacts (15° and 30°). In each scenario, the child kinematics, seatbelt to neck interaction, head acceleration, HIC15, and chest acceleration were extracted as metrics to determine the safety effectiveness of the foldable booster seat. The study concluded that the foldable booster seat reduced the risk of neck entrapment as well as better restrained the dummy in its seat. While the head acceleration, HIC15, and chest acceleration may slightly increase, injury responses caused by the foldable booster seat are still well within safe margins.This study suggests that foldable booster seats are innovative and practical and have the potential, pending more research, to protect children in frontal collisions better.

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Section: Sled Test Modelmentioning

confidence: 99%

Effectiveness analysis of a foldable booster safety seat with integrated seatbelt buckle for reducing children’s vehicle accident injury risk

Liang

Liu

et al. 2022

International Journal of Crashworthiness

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“…1 Over the past few decades, numerous academics have expressed concern about thin-walled tube behavior with the increasing importance of lightweight and crashworthy. 2,3 As a result, much effort has been made to gain a better understanding of the energy absorption characteristics of thin-walled structures through analytical, experimental, and numerical methods. [4][5][6][7][8][9][10][11][12][13][14] Improving material utilization and enhancing vehicle crashworthiness has become a research hotspot.…”

Section: Introductionmentioning

confidence: 99%

“…À 40:41 + 5:08k + 97:46h À 0:16hk À 0:84k 2 À 9:77h 2 + 0:04k 3 + 1:02h3 ð21Þ Y 2 = 201:04 À 0:23k À 72:06h + 9:02h 2…”

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Dynamic response of bionic non-convex tubes with proportional distribution of bulkhead

Liang,

Xu,

Zhu

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Non-convex tubes that have superior energy absorption potential may expand and deform unstable during impact, limiting energy absorption. The bamboo node can strengthen bamboo by resisting expansion. Therefore, bulkhead proportional distribution of bionic non-convex (BPDBN) tubes, an integrator of them, may present more efficient energy absorption performance. This research proposed to investigate the effect of geometrical parameters on the crashworthiness characteristics of BPDBN tubes. The position of bulkheads was assumed to vary according to the positive proportional function primarily determined by proportional coefficient k. The dynamic response was evaluated by the initial peak force (IPF), specific energy absorption (SEA), and crush force efficiency (CFE). Multi-objective optimization method was utilized to further improve the energy absorption performance. The optimal design lowered the IPF (34.00%), increased the SEA (37.16%) and the CFE (42.95%). This paper emphasizes that optimizing the geometrical parameters and the bulkhead distance proportion can significantly improve the crashworthiness performance of BPDBN tubes.

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The interaction of contributing factors and prediction on injury severity of accident for motor vehicle drivers

Yin,

Gao,

Wang

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part D:

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Each year, numerous motor vehicle drivers (MVD) suffer injuries or fatalities in traffic accidents. Many factors are related to the severity of injuries sustained by MVD in traffic accidents. The primary objective of this study is to investigate the interaction of factors influencing injury severity of MVD and to predict injury severity. Using the traffic accident data collected from a city in China between 2018 and 2023, we employed the multinomial logistic regression model to identify significant factors affecting injury severity of MVD. Subsequently, these significant factors were incorporated into a stepwise logistic regression model to analyze the relationship between the interaction of factors and injury severity of MVD. Furthermore, the significant factors in the logistic regression model were taken as independent variables, and Random Forest, XGBoost, and LightGBM were used to construct the prediction model of injury severity of MVD. The results indicate that 13 factors have significant meaning for MVD. The stepwise logistic regression model reveals that nine interactions have the most significant impact on injury degree of MVD. The quantitative analysis of the relationship between injury severity and interaction indicates individuals aged 66 and above with abnormal vehicle status, individuals aged 26–45 with guardrails, individuals aged 46–65 and special road, vehicles with normal status and no lighting at night, vehicles with normal status and other driving state, green plants and green belts and early morning, sand, gravel, or dirt roads and cloudy day, mountain and no lighting at night can lead to increased injury severity of MVD. Among the prediction models, the XGBoost model with SMOTE sampling achieved the highest accuracy, macro-averaged precision, macro-averaged recall, and macro-averaged F1 score, with an accuracy of 0.907. The findings of this study provide valuable insights for traffic management authorities to improve traffic safety and reduce the severity of MVD injuries in traffic accidents.

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An FSRW numerical simplification approach for vehicle frontal crashworthiness analysis

Cited by 3 publications

References 26 publications

Effectiveness analysis of a foldable booster safety seat with integrated seatbelt buckle for reducing children’s vehicle accident injury risk

Effectiveness analysis of a foldable booster safety seat with integrated seatbelt buckle for reducing children’s vehicle accident injury risk

Dynamic response of bionic non-convex tubes with proportional distribution of bulkhead

The interaction of contributing factors and prediction on injury severity of accident for motor vehicle drivers

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