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Development of a three-dimensional body shape model of young children for child restraint design

Monica L H Jones1, Sheila M Ebert1, Matthew P Reed1

  • 1a Biosciences Group , University of Michigan Transportation Research Institute , Ann Arbor , Michigan , USA.

Computer Methods in Biomechanics and Biomedical Engineering
|February 20, 2019
PubMed

Insights

This study created 3D body shape models for children aged 1-3 years, crucial for designing safer child restraints. These new manikins improve the assessment of child occupant accommodation in safety devices.

Area of Science:

  • Biomedical Engineering
  • Human Factors Engineering
  • Pediatric Safety

Background:

  • Child restraint design relies on child anthropometric data.
  • Limited 3D body shape data exists for children under three years old.
  • Accurate models are needed for effective child restraint system (CRS) design.

Purpose of the Study:

  • To develop statistical body shape models (SBSM) for children aged 12-58 months.
  • To create 3D manikins for evaluating child accommodation in restraints.
  • To provide data for developing anthropomorphic test devices (ATDs) and computational models.

Main Methods:

  • Collected surface geometry data from 67 children (12-58 months).
  • Utilized novel template fitting for homologous meshes and posture standardization.
  • Employed principal component analysis and regression to build the SBSM.

Main Results:

  • Developed an SBSM for children weighing 9-23 kg in a seated posture.
  • Generated 18 manikins representing children aged 1-3 years with diverse shapes and sizes.
  • Validated the manikins for child restraint accommodation assessment.

Conclusions:

  • The new SBSM and manikins enhance child restraint design and evaluation.
  • These models support the development of advanced ATDs and computational occupant models.
  • Improved anthropometric data for young children advances pediatric safety research.

Keywords:
ATDChild anthropometrychild restraint systemparametric modellingseated body shapestatistical body shape model

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