Study on CAE Simulation of Garment Pressure Using Strain Energy Density Function Derived from Biaxial Deformation Test Method
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.45 Vol.45】
ABSTRACT
To predict garment pressure accurately, it is essential to model the biaxial deformation behavior of textiles by considering yarn properties and weave structure. Yarn's mechanical properties are nonlinear, and assuming a Poisson's ratio of 0.5, we can employ a hyperelastic model to simulate large deformation behavior. In this study, we approximate the mechanical properties of spun yarn using an equivalent model of a homogeneous monofilament. We use CAE software, Abaqus, to simulate the biaxial tensile behavior of a plain weave.We estimate the stress-strain relationship by fitting the strain energy density function to the Mooney-Rivlin approximation, which is based on biaxial deformation in the course direction. This direction closely resembles the deformation experienced when wearing a garment. We also utilize CAD data for a general-purpose mannequin and a shirt. When we compared the results with the measured garment pressure of a T-shirt worn on a mannequin, we found that they were in good agreement with the measured garment pressure.
DECENTE SPORTS SCIENCE Vol.45/The DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
To predict garment pressure accurately, it is essential to model the biaxial deformation behavior of textiles by considering yarn properties and weave structure. Yarn's mechanical properties are nonlinear, and assuming a Poisson's ratio of 0.5, we can employ a hyperelastic model to simulate large deformation behavior. In this study, we approximate the mechanical properties of spun yarn using an equivalent model of a homogeneous monofilament. We use CAE software, Abaqus, to simulate the biaxial tensile behavior of a plain weave.We estimate the stress-strain relationship by fitting the strain energy density function to the Mooney-Rivlin approximation, which is based on biaxial deformation in the course direction. This direction closely resembles the deformation experienced when wearing a garment. We also utilize CAD data for a general-purpose mannequin and a shirt. When we compared the results with the measured garment pressure of a T-shirt worn on a mannequin, we found that they were in good agreement with the measured garment pressure.
DECENTE SPORTS SCIENCE Vol.45/The DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Yoshihiro Yamashita*1, Satoshi Ishikawa*2 |
|---|---|
| University or institution | *1 University of Fukui,Research Center for Fibers and Materials, *2 IDAJ |
Keywords
Garment pressure, CAE Simulation, Strain energy, Knit, Knitted fabric, Biaxial deformation