The Application of the Volumetric Subdivision Scheme in the Simulation of Elastic Human Body Deformation and Garment Pressure

Abstract

The simulation of elastic human body deformation and the garment pressure distribution when wearing tight-fitting clothing is critical for the biomechanical design of functional apparel products. In this paper, we propose a new geometric interpolatory volumetric subdivision scheme over the hexahedron lattice to simulate the deformation of an elastic human body and the distribution of garment pressures. The displacement of the initial coarsest lattice of the deformed elastic human body is calculated by the iterative integration of the Lagrangian dynamic equation, which reflects the interactive reactions between the fabric and the elastic human body. The subsequent refined lattices after the deformation of initial and coarsest lattice of the human body are computed using the volumetric interpolatory subdivision scheme and eventually generate a continuous solid human body in the limit. The distribution of garment pressures is also calculated after the deformation of the elastic human body in this paper. In addition to the geometrical characteristics, we assign material and physical properties to the control vertices of the volume lattices; for example, the displacement of initial lattices of the deformed human body in this paper, and apply the same subdivision rules on the control lattices to acquire smoothly interpolated properties. This scheme is a potential method for both the dynamic and static volume modeling, and it can also be utilized in a wide range of applications.

Compression Garments for Medical Therapy and Sports

“…Alternatively, Wang employed a geometric interpolatory volumetric subdivision scheme over the hexahedron lattice to simulate the elastic human body deformation and the pressure distribution when wearing tight-fitting clothing [121]. In this simulation method, the elastic human body model and fabric mass-spring model were used.…”

A smart mannequin system for the pressure performance evaluation of compression garments

“…2 Nishimatsu et al developed a system based on elastic optical fibers to measure the clothing pressure at the top of socks. 3 Liu et al employed a small pressure sensor of 9.525 mm in diameter and 0.127 mm in thickness to measure the contact pressure of graduated elastic compression stockings at different heights along the human leg. 4 Direct pressure measurement on the human subject, however, has a number of limitations: it is rather difficult to achieve good accuracy and reproducibility due to body movement; it is tiring and time consuming to the human subjects; and it is not suitable for routine tests for product evaluation as the same women may not be available for testing for a long period of time and, even with the same person, her body sizes change from time to time.…”

“…8 Alternatively, Wang proposed a geometric interpolatory volumetric subdivision scheme over the hexahedron lattice to simulate deformation of an elastic human body and pressure distribution when wearing tight-fitting clothing. 9 Zhang et al presented a mechanical model for numerical simulation of 3D dynamic contact pressure using a finite element method. 10 Liu et al published several papers on pressure distribution of graduated compression stockings using numerical simulation.…”

Establishing a Genetic Algorithm-Back Propagation model to predict the pressure of girdles and to determine the model function

“…The pressure prediction of body shaping underwear has been investigated by some scholars. 8–12 Ishimaru et al. placed sensors on the surface of the human body and a technical method of numerical analysis was proposed to simulate the clothing pressure; 8 Sun and Deng used Abaqus finite element software to generate a high quality mesh mode for analyzing the pressure distribution of electrocardiogram monitoring clothing; 9 Zhang et al.…”

“…Then, an iterative method was used to predict the relationship between the human body and the clothing pressure based on the human body deformation. 11 Mirjalili et al. used the Ansys software to build a finite element model to predict the distribution of clothing pressure.…”