Assessment of a dummy model in crash simulations using rating methods

Untaroiu, Costin D.; Shin, Joong Won; Lu, Yuan-Chiao

doi:10.1007/s12239-013-0043-x

Cited by 24 publications

(5 citation statements)

References 23 publications

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“…The hip tolerance of the model was within the ranges reported in PMHS tests, but its values were higher than the test average forces. Though the higher tolerance of the model could be associated with the age of the subject modeled (younger than the PMHS tested), the model could be further calibrated in the future by changing the parameters of bone within the ranges reported in the literature using optimization and rating methods (Untaroiu et al 2009;Untaroiu, Shin, and Lu 2013). The shape of the injury surface corresponding to the hip under knee loading (Figure 14) suggests that a sitting posture with a larger hip joint extension angle would increase the hip injury tolerance during frontal impacts.…”

Section: Discussionmentioning

confidence: 99%

A Numerical Investigation on the Variation in Hip Injury Tolerance With Occupant Posture During Frontal Collisions

Yue

Untaroiu

2014

Traffic Injury Prevention

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Section: Discussionmentioning

confidence: 99%

A Numerical Investigation on the Variation in Hip Injury Tolerance With Occupant Posture During Frontal Collisions

Yue

Untaroiu

2014

Traffic Injury Prevention

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“…To find the most appropriate improvements, a complex sensitivity analysis of the model is recommended to be performed to quantify the effects of various modeling parameters on the model performance. This future analysis could be coupled with a rating scheme [13] and may quantify the model validation and dictate the model regions which require further refinements. In addition, adding initial prestress in ligaments and muscle models to the current lower limb model would help to better approximate the response within the foot and ankle model prior to and during impact.…”

Section: Discussionmentioning

confidence: 99%

“…Finally, the capability of the injury surface to predict an injury based on the injury parameters recorded during a simulation was evaluated. It is believed that the results of this study could be used to predict the ankle and subtalar injuries according to the experimental outputs recorded on anthropométrie test devices (ATD) during crash tests [13].…”

Section: Introductionmentioning

confidence: 99%

Biomechanical and Injury Response of Human Foot and Ankle Under Complex Loading

Shin

Untaroiu

2013

Journal of Biomechanical Engineering

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Ankle and subtalar joint injuries of vehicle front seat occupants are frequently recorded during frontal and offset vehicle crashes. A few injury criteria for foot and ankle were proposed in the past; however, they addressed only certain injury mechanisms or impact loadings. The main goal of this study was to investigate numerically the tolerance of foot and ankle under complex loading which may appear during automotive crashes. A previously developed and preliminarily validated foot and leg finite element (FE) model of a 50th percentile male was employed in this study. The model was further validated against postmortem human subjects (PMHS) data in various loading conditions that generates the bony fractures and ligament failures in ankle and subtalar regions observed in traffic accidents. Then, the foot and leg model were subjected to complex loading simulated as combinations of axial, dorsiflexion, and inversion loadings. An injury surface was fitted through the points corresponding to the parameters recorded at the time of failure in the FE simulations. The compelling injury predictions of the injury surface in two crash simulations may recommend its application for interpreting the test data recorded by anthropometric test devices (ATD) during crash tests. It is believed that the methodology presented in this study may be appropriate for the development of injury criteria under complex loadings corresponding to other body regions as well.

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“…The validation of the material model for four types of EAFs was assessed using CORA (CORrelation and Analysis) plus v 4.0.5 software from PDB-Partnership for Dummy Technology and Biomechanics. This rating represents an objective method to evaluate the overall time-history curves between simulation and experiment [39][40][41], using the phase shift, size, and shape ratings [42][43][44]. Detailed introduction and instructions can be found through its official website.…”

Section: Data Analysis and Accident Reconstruction Casementioning

confidence: 99%

Finite Element Analysis of Energy-Absorbing Floors for Reducing Head Injury Risk during Fall Accidents

Huang,

Kleiven

2023

Applied Sciences

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Energy-absorbing floor (EAF) has been proposed as one of several biomechanically effective strategies to mitigate the risk of fall-related injuries by decreasing peak loads and enhancing system energy absorption. This study aims to compare the protective capacity of four commercially available EAF products (Igelkott Floor, Kradal, SmartCells, and OmniSports) in terms of head impacts using the finite element (FE) method. The stress–strain curves acquired from mechanical tests were applied to material models in LS-Dyna. The established FE models were then validated using Hybrid III or hemispheric drop tests to compare the acceleration–time curves between experiments and simulations. Finally, the validated FE models were utilized to simulate a typical pedestrian fall accident scenario. It was demonstrated that EAFs can substantially reduce the peak forces, acceleration, and velocity changes during fall-related head impacts. Specifically, in the accident reconstruction scenario, SmartCells provided the largest reduction in peak linear acceleration and skull fracture risk, while Igelkott Floor provided the largest reduction in peak angular velocity and concussion risk. This performance was caused by different energy absorption mechanisms. Consequently, the results can contribute to supporting the implementation of EAFs and determine the effectiveness of various protective strategies for fall-related head injury prevention.

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Assessment of a dummy model in crash simulations using rating methods

Cited by 24 publications

References 23 publications

A Numerical Investigation on the Variation in Hip Injury Tolerance With Occupant Posture During Frontal Collisions

A Numerical Investigation on the Variation in Hip Injury Tolerance With Occupant Posture During Frontal Collisions

Biomechanical and Injury Response of Human Foot and Ankle Under Complex Loading

Finite Element Analysis of Energy-Absorbing Floors for Reducing Head Injury Risk during Fall Accidents

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