Finite element simulation on clothing pressure and body deformation of the top part of men’s socks using curve fitting equations

Abstract

Purpose – Objective appraisal of pressure comfort is the basement of optimal design of clothing. The purpose of this paper is to study a new method to appraise pressure comfort through displacement distribution, and then explored the multiple relationship between pressure and displacement on the lower leg cross-section using finite element method (FEM) and curve fitting. Design/methodology/approach – This paper presented a 2D simulation model of the lower leg cross-section consisting of three layer different mechanical properties, namely skin, soft tissue, and bone. Analyzed the relationship and variation tendency between contact pressure and strain, calculated the multiple relationship between pressure and displacement on the lower leg cross-section where located at the top part of men’s socks in detail, and then obtained the quadratic functional equation between angle and pressure/displacement ratio through segmented curve fitting using Origin 7.5 software. Findings – In this research work, the mathematical equation is obtained which describe the relationship between angle and pressure/displacement of the top part of men’s socks. On the premise of the known contact pressure values on the lower leg cross-section, the corresponding displacement values on the human body surface can be obtained by the functional equation under stress, and this displacement could be used as an objective evaluation index for pressure comfort. Based on these conclusions, the authors could provide theoretical reference for pressure prediction and optimizing the design of clothing. Research limitations/implications – This paper is unconcerned with the simulating of pressure, strain, and displacement distribution when dressing during the course of walking and running. Originality/value – The paper analyzed the relationship and variation tendency between contact pressure and strain using FEM, and then obtained the quadratic functional equation between angle and pressure/displacement ratio of the top part of socks. It can supply a new method to appraise pressure comfort.