Research On The Ease Of Fitted Hat Based On Pressure Comfort And Parametric Design

In recent years, as the improvements of the quality of people’s life and the conversion of the consuming concept, more and more consumers begin to pay attention to health and fashion. In that condition, the hat becomes the most influential one on the point of the subject of health preservation and adornment. However, for now, there is not so much theory on the comfort of the hat, so this paper studies on the hat ease based on the comfort of human body, applying the principle of apparel anthropological engineering and hat pattern design combines with the principle of parametric design to perfect the theory of the hat in order to offer references for consumers and enterprise production. The specific contents as following:A questionnaire investigation were carried out on the young consumer in Shanghai with357effectively collected. By SPSS statistical analysis of questionnaires,it was found that hat still have a great many of consumers even if it has not become the essentiality in people’s daily life so far. In this survey,consumers’behavior, preferences and demand were learned,which gives references to subsequent pressure experiments of the cap pressure.,at the same time,it offers the basis for the product positioning of enterprises in the future.Based on the results of survey,the style of pressure experimental sample hats were determined,including baseball cap, tracker cap, cloche hat, tracker cap (the control group). Regression equation of circumference between the finished products and the corresponding pattern of hat in every type was established via the manufacture of24sample hats on the background of16s*12s pure cotton twill fabrics.The regression equation which achieved is also used in the second manufacture of sample hats.Measurements the circumference of finished products showed that the circumference error is controlled within±0.3cm, which proves the effectiveness of the equation.By using the Japanese AM13037-10air-bag pressure measuring system,pressure date of4types involving24sample caps in12test points were obtained.. By means of descriptive analysis the statistics, it gains the regularities of pressure distribution of hats in different styles.The biggest press values and points with representativeness were decided as test points of people pressure experiments:forehead C1, frontal dune F1, side frontal dune point F2, under opisthocranion point C6.10samples whose head girth around56cm were selected as pressure experimental subjects.Objective pressure and subjective pressure comfort date of subjects wearing different styles were obtained.by using air-bag pressure measuring system and psychological scale. By using SPSS to analyze above data, pressure comfort threshold and comfort ease in each styles were gained.The hat is divided into four elements which are flap, side-crown, top-crown and edging through analyzing and concluding the type of hats. Analyzing the structure of all the parts leads to summarize the mathematics model of flap, side-crown and edging. Base on the principle of parametric design, extracted parameters and established the constraint relation of structural points,with the help of Richpease CAD pattern design system, this paper conducts the parametric design to pattern of all elements. On the basis of parametric pattern, via changing parameters,realized the automatic generation of hat pattern.The instance production of hats proves the strong practicability and effectiveness of parametric pattern design.This paper studies on the hat ease and parametric pattern design to perfect the theory of the hat pattern design further,improve the accuracy and efficiency of the pattern design effectively,at the same time,enhance the competitiveness of enterprises and lay the foundations for the personalized customization.