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Finite element modeling for predicting the contact pressure between a foam mattress and the human body in a supine position

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  • Wookjin Lee
  • Byeong Hee Won
  • Seong Wook Cho

Abstract

In this paper, we generated finite element (FE) models to predict the contact pressure between a foam mattress and the human body in a supine position. Twenty-year-old males were used for three-dimensional scanning to produce the FE human models, which was composed of skin and muscle tissue. A linear elastic isotropic material model was used for the skin, and the Mooney–Rivlin model was used for the muscle tissue because it can effectively represent the nonlinear behavior of muscle. The contact pressure between the human model and the mattress was predicted by numerical simulation. The human models were validated by comparing the body pressure distribution obtained from the same human subject when he was lying on two different mattress types. The experimental results showed that the slope of the lower part of the mattress caused a decrease in the contact pressure at the heels, and the effect of bone structure was most pronounced in the scapula. After inserting a simple structure to function as the scapula, the contact pressure predicted by the FE human models was consistent with the experimental body pressure distribution for all body parts. These results suggest that the models proposed in this paper will be useful to researchers and designers of products related to the prevention of pressure ulcers.

Suggested Citation

  • Wookjin Lee & Byeong Hee Won & Seong Wook Cho, 2017. "Finite element modeling for predicting the contact pressure between a foam mattress and the human body in a supine position," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 20(1), pages 104-117, January.
  • Handle: RePEc:taf:gcmbxx:v:20:y:2017:i:1:p:104-117
    DOI: 10.1080/10255842.2016.1203421
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    References listed on IDEAS

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    1. M. Bucki & V. Luboz & C. Lobos & N. Vuillerme & F. Cannard & B. Diot & Y. Payan, 2012. "Patient-specific finite element model of the buttocks for pressure ulcer prevention – linear versus non-linear modelling," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 15(S1), pages 38-40.
    2. Wolfgang Lutz & Warren Sanderson & Sergei Scherbov, 2008. "The coming acceleration of global population ageing," Nature, Nature, vol. 451(7179), pages 716-719, February.
    3. Jürgen Stausberg & Nils Lehmann & Knut Kröger & Irene Maier & Helmut Schneider & Wolfgang Niebel & for the interdisciplinary decubitus project, 2010. "Increasing pressure ulcer rates and changes in delivery of care: a retrospective analysis at a University Clinic," Journal of Clinical Nursing, John Wiley & Sons, vol. 19(11‐12), pages 1504-1509, June.
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