An intelligent method for accident reconstruction involving car and e-bike coupling automatic simulation and multi-objective optimizations

Liu, Yu; Wan, Xiaobing; Xu, Wei; Shi, Liangliang; Deng, Guoliang; Bai, Zhonghao

doi:10.1016/j.aap.2021.106476

Cited by 21 publications

(8 citation statements)

References 35 publications

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“…Huang et al (2020) performed computational biomechanical analyses and aimed to evaluate head injury risk, considering a traffic accident scenario. Recently, Liu et al (2022) defined 12 design variables and performed an optimization study in order to simulate a traffic accident. It aimed to develop an intelligent approach enabling accident reconstruction.…”

Section: Resultsmentioning

confidence: 99%

“…A total of n = 47 papers were collected through the ScienceDirect ® electronic database, and n = 32 records were excluded due to NOA + NR + WR criteria. In this regard, the research articles (n = 15) employing FEA simulations and optimization techniques in order to improve the automotive vehicle bumper design are being examined and interpreted (Ahmed 2020;Chu et al, 2019;Decker et al, 2019;Godara and Nagar, 2020;Huang et al, 2020;Kim et al, 2017;Lei et al, 2021;Liu et al, 2022;Nachippan et al, 2021;Qi et al, 2018;Shang et al, 2021;Sun et al, 2021;Wang et al, 2018;Yang et al, 2020, Zhou et al, 2022. The systematic literature review reveals that mainly three methods have been adopted to optimize automotive vehicle bumpers, considering pedestrian safety: (1) hybrid material selection (for instance, aluminum-steel), (2) geometrical modifications, and (3) multi-objective optimization approaches.…”

Section: Resultsmentioning

confidence: 99%

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Yaya Dostu Araç Tampon Tasarımı

Kalay

VARGELCİ>

CATENARO>

et al. 2022

EJOSAT

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Araç-yaya kazalarında yüksek yaralanma ve hatta ölüm riskleri göz önüne alındığında, yayalar araç pasif güvenliği kapsamında savunmasız kullanıcılar olarak değerlendirilmektedir. Bu kapsamda, otomobil üreticileri, özellikle son yirmi yılda, araçta bulunanların ve yayaların yaralanmasını (ve buna bağlı ölümleri) en aza indirmek maksadı ile ürünlerine birçok yeni özellik dâhil etmişlerdir. Yine de, her yıl yüzbinlerce insan trafik kazaları neticesinde hayatını kaybetmektedir. Bu noktadan hareketle, yaya yaralanmaları (ve güvenliği) konusu küresel çapta yankı uyandıran bir güvenlik sorunu haline gelmiş ve yaya dostu araç tasarımlarına olan ilgi (farkındalık) de artmıştır. Otomobil araç tampon sistemi, çarpışmanın ürettiği darbe enerjisini emmeyi ve bir dereceye kadar yolcuyu, yayayı ve araç gövdesini korumayı amaçlayan kritik bir araç bileşendir. Bu çalışmada, otomobil araç tampon tasarımının yaya güvenliği üzerindeki etkisini daha iyi anlamak için sistematik bir literatür taraması yaklaşımından faydalanılmıştır. Bu kapsamda, tasarımın, malzeme seçiminin ve geometri değişikliklerinin araç tampon sisteminin performansı üzerindeki etkisi yaya güvenliği dikkate alınarak incelenmiştir. Yaya dostu araç tampon tasarımlarında kullanılan güncel yaklaşımlar ortaya koyulmuş ve tartışılmıştır.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Yaya Dostu Araç Tampon Tasarımı

Kalay

VARGELCİ>

CATENARO>

et al. 2022

EJOSAT

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“…Reliable kinematic reconstruction results are essential for VRUs' head injury reconstruction. Traditional head injury reconstruction was mostly based on a single criterion to evaluate the severity of head injury [50][51][52] . In this study, the VRUs' head impact boundary conditions were assigned to the THUMS (ver.…”

Section: Head Injury Data Reliabilitymentioning

confidence: 99%

“…The novel criterion of BII and SBII were superior and more reliable than the single injury criteria for assessing brain injury, but the criterion of SBII ignored the effects of translational velocity and acceleration on brain injury. In addition, He/She established a new head injury criterion ASDHI and ASDHs for the assessment and prediction of ASDH, and although this criterion had better results for ASDH 52 , its effectiveness in assessing other head injury types was still to be proven.…”

Section: Sensitivity Analysis Of Single Injury Criterion To Severe Br...mentioning

confidence: 99%

Establishment of a weighted injury criterion for evaluation of multiple types of head severe injuries for vulnerable road users

Han

Yang

et al. 2023

Preprint

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In traffic accidents, multiple head injury types often occur simultaneously and cause severe brain injury for vulnerable road users (VRUs). In this study, a head-weighted injury criterion was developed to assess the risk of severe brain injury considering various injury types. Firstly, 50 in-depth accidents were reconstructed using a high-precision reconstruction method to reconstruct the overall kinematic response and head injury severity of VRUs and analyze the correlation between various head injury criteria and severe brain injury. Then, four injury criteria were selected that correlated well with severe brain injury, namely HIC15, angular acceleration, coup pressure, and maximum principal strain (MPS). Finally, weighted head injury criteria (WIC4) of severe injuries were established based on the four selected injury criteria, and the correlation between WIC4 and severe brain injury was validated based on the area under of receiver operating characteristic curve (AUROC) and the reconstructed results of another 10 selected accidents. The results showed that WIC4 had a good predictive capability for both severe and non-severe brain injury cases, and the AUROC was 0.983, which was significantly higher than that of the single head injury criterion. This study further improved the correlation between head injury criteria and severe brain injury.

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“…Actually, child restraint system, as a special device for passive safety, has been used for many decades, and at present has evolved greatly, can be considered as a sophisticated system especially when it functions in real accidents [4]. In order to achieve the optimum state of child restraint systems in use, many matters in the field of passive safety should be taken into consideration [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Effect of Infant Carrier’s Webbing Tension on 18-month-old Child Occupant’s Chest Accelerations in Frontal Crash Accidents Based on Experimental Validations

2023

JERT

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Infant carriers play an important role in protecting child occupants from severe injuries caused by collisions, but the tension of harness webbing cannot be controlled properly most of the time. Infant carrier’s user manual or instruction generally contains little information about the extent to which the adjusting belt should be pulled to cause the necessary webbing tension, and it is often neglected that the infants should be restrained securely. In order to improve public awareness, it is important to ascertain the effect of infant carrier’s webbing tension on the occupant’s chest accelerations. A testing scheme including 12 dynamic tests was devised and conducted, and test conditions were controlled strictly to ensure the accuracy and objectivity of results. P1.5 dummy’s resultant and vertical chest accelerations were collected and analyzed. Both ISOFIX installation and seat belt installation methods were taken into consideration without lack of generality. Sled’s accelerations and velocities were set and acquired, which constituted the fundamental testing conditions of dynamic tests and ensured the repeatability and reliability of tests. Furthermore, dummy’s chest acceleration pulses were monitored and recorded, and the data were evaluated in accordance with criteria defined in relevant technical standards. The dummy’s chest accelerations were classified into 2 groups according to child restraint systems’ installation methods, i.e., the ISOFIX group and the seat belt group. In each group, both resultant chest acceleration and vertical chest acceleration were involved. Universal phenomena were displayed in all the tests, and the larger the tensile forces were, the lower the chest accelerations were in tests. Based on experimental validations, the relation between webbing’s tensions and chest accelerations in frontal crash accidents was verified. Furthermore, suggestions were made about adjusting the webbing tension and the proper use of infant carriers.

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An intelligent method for accident reconstruction involving car and e-bike coupling automatic simulation and multi-objective optimizations

Cited by 21 publications

References 35 publications

Yaya Dostu Araç Tampon Tasarımı

Yaya Dostu Araç Tampon Tasarımı

Establishment of a weighted injury criterion for evaluation of multiple types of head severe injuries for vulnerable road users

Analysis of the Effect of Infant Carrier’s Webbing Tension on 18-month-old Child Occupant’s Chest Accelerations in Frontal Crash Accidents Based on Experimental Validations

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