Development of 6 Years Old Child Virtual Model by Automatic Scaling

Hynčík, Luděk; Manas, Jaroslav; Špička, Jan; Špirk, Stanislav; Kovář, Luděk

doi:10.4271/2014-01-2028

Cited by 7 publications

(7 citation statements)

References 5 publications

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“…The child biomechanical dummy is represented by the validated Q6 model (as reference); therefore, the comparison to this model corresponds to the comparison to the child dummy. Based on the numerical simulations of the Q6 dummy FE model and the V6 MBS model (Hyncik et al, 2014), the frontal sled test simulation of the verified TUST IBMs 6YO was carried out under the same experimental conditions.…”

Section: Model Construction and Simulation Setupmentioning

confidence: 99%

“…The weight of the Q6 dummy is 22.98 kg, and the height is 1143 mm. The V6 child Virthuman model has a height of 1140 mm and a weight of 19 kg, which was obtained by scaling an adult model according to the relevant database of 6-7-year-old child heights (Hyncik et al, 2014).…”

Section: -Year-old Child Modelmentioning

confidence: 99%

“…Both the geometry and stiffness are scaled to reconstruct a 6YO child's biomechanical properties. The model has been previously validated (Hyncik et al, 2013(Hyncik et al, , 2014.…”

Section: -Year-old Child Modelmentioning

confidence: 99%

See 2 more Smart Citations

Injury study of the 6-year-old pediatric thorax and abdomen in frontal sled tests using different computational models

Li¹,

Lv²,

Hynčík³

et al. 2022

Front. Future Transp.

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The correct use of a child restraint system (CRS) is an effective internationally recognized measure to protect the safety of child occupants which can reduce the probability of child road traffic accident deaths by 54–80%. Finite element (FE) analysis is one important method with which to study the protection of child occupants. The aim of this study was to investigate thoracic and abdominal injuries and the protective effect of CRS on child occupants in 6-year-old (6YO) children in a frontal sled test using different computational models. In this study, a verified FE model of a 6YO child occupant was placed in the FE model of a CRS with a three-point safety belt. In the simulation setup phase, the frontal sled simulation of the 6YO FE model was reconstructed by applying the AAMA pulse. Based on the simulation data of the Q6 dummy FE model (Q6) and the 6YO child Virthuman model (V6) from previous studies, the frontal sled test simulation of a verified 6YO child FE model with detailed anatomical structures (TUST IBMs 6YO) was carried out to analyze pediatric thorax and abdomen injuries under the same experimental conditions. According to the simulation results, the variation tendencies of the simulation responses such as chest acceleration and compression are consistent with each other, which can provide effective information for the design of a CRS. In addition, the simulation results of the TUST IBMs 6YO can provide a variety of simulation data, such as the maximum first principal strain value and nephogram, of the internal organs of the chest and abdomen, providing a theoretical basis for the performance analysis and later development of a CRS.

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Section: Model Construction and Simulation Setupmentioning

confidence: 99%

Section: -Year-old Child Modelmentioning

confidence: 99%

See 1 more Smart Citation

Injury study of the 6-year-old pediatric thorax and abdomen in frontal sled tests using different computational models

Li¹,

Lv²,

Hynčík³

et al. 2022

Front. Future Transp.

View full text Add to dashboard Cite

show abstract

“…The Virthuman model was validated against a large set of validation tests. The full-body tests for various traffic scenarios (Bońkowski et al, 2019, Lindstedt et al, 2016 and body sizes (Hynčík et al, 2014, Hynčík et al, 2015 as well as detailed tests for the particular human body segments (Vychytil et al, 2014) were performed to ensure the biofidelity of the Virthuman model. This model is MBS based using the deformable elements (virtual springs, dampers and kinematic joints with internal stiffness or breakable joints) to consider the deformability of the human body.…”

Section: Human Body Modelmentioning

confidence: 99%

Assessment of Nanobag as a New Safety System in the Frontal Sled Test

Špička¹,

Bońkowski²,

Hynčík³

et al. 2021

Preprint

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Objective: The future mobility challenges leads to considering new safety systems to protect vehicle passengers in non-standard and complex seating configurations. The objective of this study is to assess the performance of a brand new safety system called nanobag and to compare it to the traditional airbag performance in the frontal sled test scenario. Methods: The nanobag technology is assessed in the frontal crash test scenario and compared with the standard airbag by numerical simulation. The previously identified material model is used to assemble the nanobag numerical model. The paper exploits an existing validated human body model to assess the performance of the nanobag safety system. Using both the new nanobag and the standard airbag, the sled test numerical simulations with the variation of human bodies are performed in 30 km/h and 50 km/h frontal impacts. Results: The sled test results for both the nanobag and the standard airbag based on injury criteria shows a good and acceptable performance of the nanobag safety system compared to the traditional airbag. Conclusion: The results show that the nanobag system has its performance compared to the standard airbag, which means that thanks to the design, the nanobag safety system has a high potential and extended application for multi-directional protection against impact.

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“…This approach is close to Multibody dummy head (seen eg. in [7]) which impact to the FE model part. In the simplest arrangement, the ball could be dropped on the seat cushion.…”

Section: Experimental Validation Of Mechanical Properties Of Foamed Mmentioning

confidence: 99%

Polyurethane foam behaviour during impact

2018

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This contribution is focused on the passive safety of the railway vehicles interiors. The passive safety has become a new area of the rail vehicles design. In the field of rail vehicles interior passive safety the computer simulations are most widely used. The computer simulations must be based on relevant material data. For some common materials (eg. steel, aluminium, etc.) the material data are ascertainable. The interiors of rail vehicles contain quite specific materials frequently. One of the material with more complicated mechanical properties is polyurethane foam (PUR). The aim of this paper is to present validation of material parameters for specific polyurethane foam by experiment. The material properties (for seat made from Elastoflex W 5662 covered with Holdsworth BHLH 31634) will be useful for further simulations.

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Development of 6 Years Old Child Virtual Model by Automatic Scaling

Cited by 7 publications

References 5 publications

Injury study of the 6-year-old pediatric thorax and abdomen in frontal sled tests using different computational models

Injury study of the 6-year-old pediatric thorax and abdomen in frontal sled tests using different computational models

Assessment of Nanobag as a New Safety System in the Frontal Sled Test

Polyurethane foam behaviour during impact

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