男短袜袜口压力的有限元研究

Study on pressure at top part of man′s socks using finite element method

人体与服装之间的压力研究是服装优化设计的关键。通过三维人体扫描仪对人体内侧脚踝点水平向上6 cm处腿部形态进行扫描,并运用有限元模拟男短袜袜口对腿部施压后压力与位移的关系。研究中,人体视为弹性体,腿部与袜口之间的接触视为弹性接触,通过有限元分析及曲线拟合,可得到压力与位移间的函数关系,同时按照角度将腿截面等分为4个区域,并计算出各区域受压后的总面积缩量。此外,还分析了影响压力水平的各因素之间关系,并通过主成分分析得到压力与各因素之间的函数关系式。

The key for optimal designing of a garment lies in understanding the pressure which has been brought about by the garment on the human body. 3-D body scanning instrument is used to scan the morphology of the inside part of the leg 6 cm above the ankle, and the relationship between the pressure brought about on the leg by the top of socks and the displacement is investigated using finite element method. In this study, the human body is regarded as an elastomer and the contact between the lower leg and the top part of socks is elastic contact. After using finite element analysis and fitting curves, the pressure-displacement quadratic equation can be obtained. Meanwhile, we divide the lower leg cross section into four equal regions according to the angle, and the area shrinkage of each region under pressure can be calculated. And finally, we analyze the relationship between factors that affect pressure levels, and then obtain a function formula between pressure and impact factors by principal component analysis.