Numerical Low-Back Booster Analysis on a 6-Year-Old Infant during a Frontal Crash Test

Cruz-Jaramillo, I. L.; Miguel, Christopher René Torres-San; Cortes-Vásquez, O.; Martínez-Sáez, L.

doi:10.1155/2018/2359262

Cited by 15 publications

(9 citation statements)

References 5 publications

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“…e support of the numerical models was carried out through frontal impact tests, obtaining approximations up to 7.7% as compared with experimental tests results [22]. e dolly rollover test was validated by comparing with the kinematics results of the Ford Explorer 2003 Version 2, developed by the NCAC, consisting of 791 parts, 632,166 nodes, and 619,161 elements of which 585,418 are hollow, 33,695 are solid, and 48 beams.…”

Section: Discussionmentioning

confidence: 99%

Numerical Low-Back Booster Analysis in a 6-Year-Old Infant during a Dolly Rollover Test

Cruz-Jaramillo

Miguel

Martínez-Sáez

et al. 2020

Journal of Advanced Transportation

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This paper analyzes the possible head and chest injuries, produced in a Hybrid III dummy model of a six-year-old child during a rollover test, while the child uses a passive safety system low-back booster (LBB). Vehicle seats and passive safety systems were modeled with a CAD (Computer Aided Design) software; later, all elements were analyzed using the finite element method (FEM) with LS-DYNA® software. The border conditions were established for each study, in accordance with the regulations of Federal Motor Vehicle Safety Standards (FMVSS), and following the FMVSS 213 standard for the mounting and fastening of the infant, the FMVSS 208 for the dolly methodology test with the vehicle rollover was performed, implementing such analysis under the same conditions for a vehicle Toyota Yaris 2010. The numerical simulations were performed during an interval of 1 second, obtaining data values for periods of 2 milliseconds. This paper examines the efficiency of the system; three case studies were carried out: Study I: vehicle seat belt (VSB); Study II: the LBB system was secured by the seat belt; Study III: the LBB system with ISOFIX anchorage. The values of decelerations for the head and thorax of the infant were obtained, as well as neck flexion and thoracic deflection. The main factor to reduce injuries during a rollover accident is the correct anchorage of the LBB, and this is achieved with the ISOFIX system, since it prevents the independent movement of the LBB, unlike when it is fastened with the seat belt of the vehicle. The results show low levels of head and chest injury when ISOFIX is used because of reduced thoracic deflection during infant retention.

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Section: Discussionmentioning

confidence: 99%

Numerical Low-Back Booster Analysis in a 6-Year-Old Infant during a Dolly Rollover Test

Cruz-Jaramillo

Miguel

Martínez-Sáez

et al. 2020

Journal of Advanced Transportation

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“…Three cyclists' crash impact simulations were carried out using the finite element method by Ls-Dyna® Software, through a detailed analysis due to the high nonlinearities, the inertial components, and the short duration of the phenomenon. All the simulations are carried out in the overtaking crash scenario, where the car impacts the bicycle's rear wheel while the bicycle and the vehicle are in the same direction [19]. The characteristics for each case of run-over are described in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Numerical Assessment of a Safety System to Minimize Injuries during a Cyclist Run-Over

López-García

Carbajal-Romero

Flores-Campos

et al. 2021

Applied Bionics and Biomechanics

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Background. The World Health Organization has reported that 1.35 million people die on the roads every year due to road traffic accidents. This paper focuses on exploring a passive safety system that reduces lesions in the overtaking run-over scenario. Methods. Head Injury Criterion (HIC) and Combined Thoracic Index (CTI) were evaluated through numerical simulations using LS-Dyna®; in order to compare the computed results, three different speed scenarios were carried out (velocity of running over 40, 50, 60 km/h). Results. The computed results were divided into groups, A for the run-over test without a passive security system and B for the run-over test with a passive security system. For case A.1, the HIC15 was 3325. For case A.2, the HIC15 was 1510, and for case A.3, the HIC 15 was 1208. For case B.1, the HIC15 2605, for case B.2, the HIC15 was 1282, and for case B.3, the HIC was 730. Conclusion. The comparative results show that the passive safety system installed on the bicycle has an increased benefit impact on the severity of the injury on vulnerable road users, decreasing the probability of cranioencephalic lesions in all study cases. In addition, the thorax injuries are cut down only in the impact scenario at a speed of 40 km/h.

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“…This dummy consists of a humanoid model with anthropometric dimensions. It is provided with accelerometers and loads cells to obtain data from head impacts in several experimental events [10][11][12]. It is the most Anthropometric Test Device (ATD) used to evaluate vehicle crash events and many other events that could injure a person.…”

Section: Introductionmentioning

confidence: 99%

Design of an Articulated Neck to Assess Impact Head-Neck Injuries

Rueda-Arreguín

Ceccarelli

Miguel

2022

Life

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This paper describes a new solution for an articulated low-cost artificial neck with sensors to assess the effects of head impacts. This prototype is designed as a new solution to evaluate the neck’s response after suffering the head impact. An overview of existing solutions is reported to evaluate the advantages and disadvantages of each one briefly. Problems and requirements for prototype design are outlined to guide to a solution with commercial components. A prototype is developed, and its operating performance is evaluated through a lab test. Several tests are worked out considering the biomechanics involved in the most common accidents of head-neck impacts. Results show a response on the prototype similar to an actual human neck. Future improvements are also outlined for better accurate responses considering the results from the lab test.

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Numerical Low-Back Booster Analysis on a 6-Year-Old Infant during a Frontal Crash Test

Cited by 15 publications

References 5 publications

Numerical Low-Back Booster Analysis in a 6-Year-Old Infant during a Dolly Rollover Test

Numerical Low-Back Booster Analysis in a 6-Year-Old Infant during a Dolly Rollover Test

Numerical Assessment of a Safety System to Minimize Injuries during a Cyclist Run-Over

Design of an Articulated Neck to Assess Impact Head-Neck Injuries

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