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Related Experiment Videos

Skin friction blistering: computer model.

Malcolm Xing1, Ning Pan, Wen Zhong

  • 1Department of Biological System Engineering, University of California, Davis, CA, USA.

Skin Research and Technology : Official Journal of International Society for Bioengineering and the Skin (ISBS) [And] International Society for Digital Imaging of Skin (ISDIS) [And] International Society for Skin Imaging (ISSI)
|July 6, 2007
PubMed
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Computer modeling of friction blisters reveals loading frequency significantly impacts stress and deformation. Optimal friction coefficients can reduce blister severity, while contact material stiffness has minimal effect.

Area of Science:

  • Biomechanics
  • Materials Science
  • Computational Modeling

Background:

  • Friction blisters are common injuries in sports and military settings, impacting performance.
  • Studying blisters is challenging due to difficulties in human and animal experimentation.
  • Blistering can be modeled as a delamination phenomenon, drawing parallels with materials science.

Purpose of the Study:

  • To investigate the effects of friction coefficient and contact material stiffness on blister deformation and stress using computational modeling.
  • To explore the relationship between loading frequency and blister characteristics.

Main Methods:

  • A dynamic non-linear finite-element model was developed.
  • The model incorporated a blister-characterized structure and contact algorithms.

Related Experiment Videos

  • Simulations varied friction coefficient, elastic modulus, and loading frequency.

    • Main Results:

    • Loading frequency significantly alters displacement and stress.
    • Increased friction coefficient does not always increase stress or deformation; local maxima exist.
    • Contact material stiffness showed no significant effect on deformation or stress within the tested range.

    Conclusions:

    • The finite-element model effectively predicts the influence of friction and stiffness on blisters.
    • Findings can inform strategies for reducing blister incidents by evaluating loading conditions and materials.