Numerical Simulation of Mechanical Coupling for Low-Back Booster with a 6-Year-Old Child during a Crash Test
Source abstract
Abstract
This research assessed a mechanical coupling for the ISOFIX Child Restraint System using the Finite Element Method (FEM) in a critical condition (simultaneous frontal and lateral collision). The mechanism was designed according to the R129 standard, and it consists of a set of springs and dampers that allows displacements in the three Cartesian axes (x, y, z) to dissipate a portion of the energy produced by a traffic accident. Two case studies are presented. The first one evaluates the behavior of the mechanism by applying the equivalent weight of a child and the LBB during a frontal and lateral impact according to the FMVSS 213 standard. The second evaluates the injuries generated in the head, neck, and thorax with a six-year Hybrid III model during a frontal impact when implementing the coupling system. The outcomes show that both axes reach a maximum deceleration of 23 G, and it remains from 17 G to 21 G in 30 ms. After 65 ms, it decreases from 17 G to 0 G. Overall, the injury rates are compared when using mechanical coupling with LBB and only LBB to analyze the system’s efficiency, showing a significant reduction in head and neck injuries, obtaining a 24% variation in the HIC36, and reducing the neck range motion by 19.3°.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Automotive and Human Injury Biomechanics · Transportation Safety and Impact Analysis · Agriculture and Farm Safety
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Departamento de Investigación y Desarrollo Tecnológico, Tecnológico de Estudios Superiores de Tianguistenco, Km. 22. Carretera Tenango-La Marquesa Santiago Tilapa, Santiago Tianguistenco 52650, Mexico
Universidad Politécnica de Madrid, Instituto Universitario de Investigación del Automóvil, Av. del Campus Sur, 28031 Madrid, Spain
Instituto Politécnico Nacional, Escuela Superior de Ingeniería Mecánica y Eléctrica, Sección de Estudios de Posgrado e Investigación, Unidad Zacatenco, Mexico City 07738, Mexico
Funding
Consejo Nacional de Ciencia y Tecnología (CONACyT) · Instituto Politécnico Nacional · Comunidad Madrid · European FSE
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