Research On The Clothing Pressure Distribution Model Of Human Leg

With the improvement of living standards and the change of people’s living idea,in the field of cloth consumption,people gradually realize the importance of the comfort property of clothing.But in the interaction between body and cloth,Clothing pressure comfort is not only an important factor which affects the comfort property of clothing,but also a significant index that can evaluate the comfort property of clothing.But,some clothing designs for tight and body sculpting function often only focus on formal beauty and the functionality of garment,and are often designed according to the individual subjective intend so that harm which brings to human body are ignored.Therefore,Determining reasonable evaluation for clothing pressure comfort of tight-fitting cloth and discussing about the pressure distribution on the surface of the human body can provides more scientific and theoretical basis for size design of pressure sensitive comfortable tight-fitting cloth.In addition,the research also has important guidance value for the development of medical pressure products.The main contents of the research are as follows:First of all,build an intelligent virtual instrument for dynamical real-time measurement system for clothing pressure objective tests.This system combines Flexiforce pressure sensor like wafer with intelligent virtual instrument produced by NI(a company in America),and make use of the software named Labview designs the front-desk interface to meet the requirements for digital signal display,memory and preprocessing.All the above prove that this system can meet the requirements for clothing pressure objective tests more accurately.Then,make research on the comfortable sensitive clothing pressure range of 10 parts at the lower leg through subjective evaluation and objective experiments while subjects wearing different tightness pressure bandage.A series of experiments prove that the sensitive pressure ranges of each part at the lower leg are different.The comfortable sensitive clothing pressure ranges from 0.947Kpa to 4.624Kpa,which provide theoretical basis for the reasonable design for tight-fitting cloth.What’s more,do statistical analysis on the objective pressure data.The result shows that each pressure value at 10 parts are different,and the objective pressure value is reducing with loose amount is increasing.But clothing pressure distribution law of each grade are very similar.The clothing pressure and the change of circumference of corresponding body is a high degree of correlation through correlation analysis.The fitting equation is a linear function model,and the correlation between clothing pressure value and loose amount is logarithmic.Lastly,use a new way to establish a finite element model of three-dimensional human body quickly and conveniently at the first attempt.Make use of the finite element analysis software to simulate clothing pressure distribution laws of each part at the lower leg.At the beginning of the simulating process,use non-contact three-dimension body scanner to scan the human body,and get the point-cloud data of the profile of the lower leg.Then,make surface fitting for lower leg by reverse engineering software,and use a modeling software to build the three-dimension finite entity model.Simplify the model into only bones,muscle and skin because of the complicated physiological constitute of body and limited time and energy of mine.Finally,use the finite element analysis software to lower leg’s strain and displacement when the lower leg is pressed by the tight-fitting cloth,and explore the feasibility of the finite element method applied into clothing pressure distribution.