Scientists of the St. Petersburg State University of Industrial Technologies and Design (²ÝÁñ¶ÌÊÓƵ) presented a digital tool for designing sports tight-fitting clothing. The development includes a library of digital avatars, that is, virtual mannequins of various physiques, as well as an interactive calculator for automatically calculating the distribution of compression pressure to different parts of the body. This will help reduce the time and financial costs of creating full-scale samples of products at light industry enterprises.
Tight-fitting clothing for sports is designed smaller than the size of a person's figure, due to which it exerts compression pressure on different parts of the body, improving the flow of blood and lymph. However, existing design methods, including computational graphics systems and computer-aided design (CAD) systems, do not allow you to numerically set the required pressure level in different parts of the body in order to generate a drawing for its distribution, so traditionally designers at enterprises have to make a number of physical layouts.
To solve this problem, ²ÝÁñ¶ÌÊÓƵ has developed a program that can be opened through any browser. The tool simultaneously takes into account the distribution of pressure on the body, the properties of the material and the geometric dimensions of the structure of sportswear.
"The algorithm is based on Laplace's law. The program automatically calculates the coefficients of "reduction," that is, a decrease in the girth dimensional features of the virtual avatar in the waist, hips, knees and ankles in accordance with the necessary compression pressure and deformation properties of the material. The program visualizes the pressure on the 3D model of the figure and calculates the constriction values for the design drawing."
Maria Moskvina, Associate Professor, Department of Design and Technology of Sewing Products
Flat drawings of parts can be obtained from the surface of such a reduced avatar by 3D scanning in specialized software. When the product is put on the initial figure, the pressure distribution provided for by the calculation arises, the so-called "graduated compression profile."
"In addition, a library of avatars has been developed - virtual mannequins with different complexions, which allows you to take into account the variability of the structure of the figure, for example, with X-shaped and O-shaped legs, in the analysis and forecasting of clothing pressure with individual body characteristics."
Anush Gigolyan, Master of the Department of Design and Technology of Sewing Products
The development authors plan to conduct tests using contact sensors that allow measuring the pressure of clothing on a human figure. The study will take into account the deformation of the skin and subcutaneous tissues under the influence of pressure, and also include prediction of the compression profile in dynamics, when making typical movements according to the purpose of the products.