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An Objective and Child-friendly Assessment of Arm Function by Using a 3-D Sensor
Published on: February 12, 2018
An EFE model on skin-sleeve interactions during arm rotation
Malcolm M Q Xing1, Zhiguo Sun, Ning Pan
1Department of Biological System Engineering, University of California, Davis, CA 95616, USA.
Journal of Biomechanical Engineering
|December 13, 2006
Summary
This study developed a finite element model to analyze skin-fabric interactions during arm movement. It quantifies how fabric properties and garment fit impact shear stress, potentially causing skin discomfort or injury during sports.
Area of Science:
- Biomechanics
- Textile Science
- Computational Modeling
Background:
- Skin and garment interactions are crucial for comfort and protection.
- Dermatological injuries from fabric during movement are common, yet standards for evaluation are lacking, especially for intense sports.
- Quantitative analysis of these interactions is needed to prevent adverse effects.
Purpose of the Study:
- To develop and utilize a computational model to simulate skin-fabric interactions during arm rotation.
- To quantitatively assess the severity of these interactions using normalized effective shear stresses.
- To investigate the influence of fabric properties, fabric-skin gap, and movement rate on these interactions.
Main Methods:
- A three-dimensional explicit finite element (EFE) model was developed.
- The Augmented Lagrange algorithm (ALA) was integrated into the model.
- Simulations were performed to analyze skin-sleeve interactions during arm rotation.
Main Results:
- Normalized effective shear stresses at the skin-fabric interface were calculated.
- The study identified significant influences of fabric elastic modulus, friction coefficients, density, and initial skin-fabric gap on shear stress.
- Predictions demonstrated the impact of arm rotation rate on interaction severity.
Conclusions:
- This study quantitatively confirms that fabric properties and garment design significantly affect shear stress.
- Inappropriate fabric choices and garment design can lead to adverse skin actions, including discomfort and potential injury.
- The findings provide a basis for developing guidelines for fabric selection and garment design in sports and military applications.
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