Modelling and simulation of seat-integrated safety belts including studies of pelvis and torso responses in frontal crashes

Gavelin, Anders; Lindquist, Mats; Oldenburg, Mats

doi:10.1080/13588260701482906

Cited by 12 publications

(19 citation statements)

References 1 publication

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“…However, neck loads and head kinematics were not evaluated. The present study continues the previous work made by the authors in [4] and is based on the same method and models.…”

Section: Introductionmentioning

confidence: 76%

“…For further information e.g. material models, material parameters and constitutive characteristics, see [4].…”

Section: Introductionmentioning

confidence: 99%

“…A Hybrid III FE-dummy model was used. A study concerning the performance of these systems has been published [4] where pelvis and torso responses as well as belt forces and ride-down efficiency were evaluated. However, neck loads and head kinematics were not evaluated.…”

Section: Introductionmentioning

confidence: 99%

“…FE-analysis software (LS-DYNA) [7] was used in the simulations. The method and models are thoroughly described in [4] and will only be described briefly here. For further information e.g.…”

Section: Introductionmentioning

confidence: 99%

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Numerical studies concerning upper neck and head responses in frontal crashes with seat-integrated safety belts

Gavelin

Lindquist

Oldenburg

2007

International Journal of Crashworthiness

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Mitigation of neck and head injuries is critical in automotive occupant protection. The aim of the present study is to investigate how the physical properties influence the interaction of the seat back frame and the safety belt. Seat integrated 3-and 4-point configurations with both non-rigid and rigid seat back frames were compared with 3-point configurations with anchor points on the car body. The LS-DYNA FE-analysis software was used in order to perform frontal crash simulations with a belted 50th percentile Hybrid III dummy model as occupant. The belt-webbing distribution between the lap and the torso belts via a slip-ring and in combination with a non-rigid seat back frame had an advantageous influence concerning the loads of the upper neck and injury criteria compared to a system with no belt-webbing distribution.

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“…However, neck loads and head kinematics were not evaluated. The present study continues the previous work made by the authors in [4] and is based on the same method and models.…”

Section: Introductionmentioning

confidence: 76%

“…For further information e.g. material models, material parameters and constitutive characteristics, see [4].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…FE-analysis software (LS-DYNA) [7] was used in the simulations. The method and models are thoroughly described in [4] and will only be described briefly here. For further information e.g.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical studies concerning upper neck and head responses in frontal crashes with seat-integrated safety belts

Gavelin

Lindquist

Oldenburg

2007

International Journal of Crashworthiness

Self Cite

View full text Add to dashboard Cite

show abstract

“…In contrast, there is a much broader range of literature relating to conventional seat design [2,14,28] and seat with integrated seatbelts [5][6][7]19] . Early work with impact sleds and crash test dummies established a clear relationship between seat design and occupant injury risk [1].…”

Section: Introductionmentioning

confidence: 99%

A static test method to assess swivel seat strength in frontal impact

Preston¹,

Amato

Lyons

et al. 2014

International Journal of Crashworthiness

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Mechanical swivel seat adaptations are a key aftermarket disability modification to any small to medium sized passenger vehicle. However, the crashworthiness of these devices is currently unregulated and the existing 20 g dynamic sled testing approach is prohibitively expensive for prototype assessment purposes. In this paper, an alternative quasi-static test method for swivel seat assessment is presented, and two different approaches (free body diagram and multibody modelling) validated through published experimental data, are developed to determine the appropriate loading conditions to apply in the quasi-static testing.Results show the two theoretical approaches can give similar results for estimating the quasi-static loading conditions, and this depends on the seatbelt configuration.Application of the approach to quasi-static testing of both conventional seats and those with integrated seat belts showed the approach to be successful and easy to apply. It is proposed that this method be used by swivel seat designers to assess new prototypes prior to final validation via the traditional 20 g sled test.

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Evaluation of a Morphable Anthropomorphic Articulated Total Body Model

Pascoletti¹,

Huysmans²,

Conti³

et al. 2021

Lecture Notes in Mechanical Engineering

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In this work a new approach for the creation of Articulated Total Body (ATB) models for person-specific multi-body simulations is presented, with the main aim of overcoming limitations related to classical multi-ellipsoids ATB models, based on regression equations having only the weight and the height of the subject as input. The new methodology is based on a Statistical Shape Model (SSM), morphable according to up to 24 input parameters: the SSM was obtained from Principal Component Analysis (PCA), applied on a wide database of 3D human scans (CAESAR). The so obtained geometry can be segmented automatically to generate body segments with the respective inertial properties (mass, principal moments of inertia, and centres of mass location). The routine has been tested on a random set of 20 male subjects and the classical multi-ellipsoids models were compared to these in terms of inertial properties and 3D external geometry: the highest differences were registered at the abdomen and the thighs for what concerns the mass (60%), principal moments (75%) and centres of mass (50 mm) properties; the trunk, the shoulder and the calves are the most critical areas for the external geometry (average distance between the anthropomorphic and ellipsoids models equal to 50 mm). A contribution has been made to build personspecific multibody models. This is a valuable method since approximations made by multi-ellipsoidal models have resulted to be relevant at specific body areas, and personalised models can be a support to design and to forensic analyses.

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Modelling and simulation of seat-integrated safety belts including studies of pelvis and torso responses in frontal crashes

Cited by 12 publications

References 1 publication

Numerical studies concerning upper neck and head responses in frontal crashes with seat-integrated safety belts

Numerical studies concerning upper neck and head responses in frontal crashes with seat-integrated safety belts

A static test method to assess swivel seat strength in frontal impact

Evaluation of a Morphable Anthropomorphic Articulated Total Body Model

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