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Shiga, Japan

Ishimaru S.,Research Center . | Isogai Y.,Research Center . | Matsui M.,Research Center . | Furuichi K.,Research Center . | And 2 more authors.
Journal of Textile Engineering | Year: 2011

Clothing pressure is evaluated by wearing clothes on a human body or a dummy and measuring the pressure using pressure sensors. We have developed a technique for predicting clothing pressure by the finite element method using the experimentally obtained tensile properties of knitted fabrics. Our technique does not involve making actual clothes. In this study, we succeeded in wearing the pattern of the girdle on a human body model by utilizing data that represent the pattern of the girdle and the bending of the girdle along the side of the model. After determining the comfortable pressure, the appropriate knitted fabrics that produce the target clothing pressure were chosen according to the predicted clothing pressure. A girdle was sewn using the chosen knitted fabric, and subjects wore this girdle; thus, it was verified that the girdle can provide a comfortable sensation because it produces the appropriate pressure. In addition, when wearing the girdle, the high-frequency component (HF) of the electrocardiogram (parasympathetic nervous system index) was high, and this is indicative of physiological relaxation. However, there were difference between the numerical clothing pressure using rigid body and the experimental clothing pressure measured by elastic Human body. Thus, depending on how to usage, the technique for predicting clothing pressure can be applied to the clothing design for the comfortable clothing pressure. Source


Sonoko I.,Research Center . | Yumiko I.,Research Center . | Mariko M.,Research Center . | Kiyoshi N.,Research Center . | And 2 more authors.
Journal of Textile Engineering | Year: 2010

Generally, the clothing pressure is measured with the sensor set on the surface of the human body or the dummies. It is not possible to measure the clothing pressure without sewing process. We have developed the technology to simulate the clothing pressure without sewing clothing by using the numerical analysis technique. In this research, the numeric knitting model reported with the previous paper is used, and how to contact clothing pattern with sleeves to the human body model is described. Concretely, a temporary body is existed between the human body model and clothing pattern. After the clothing pattern can be contact to the temporary body, it can be contact the human body model. With this method, the clothing pressure values predicted using this computer simulation proved to be very close to the actually measured values. In this study, we show short-sleeved underwear. © 2010 The Textile Machinery Society of Japan. Source


Ishimaru S.,Research Center . | Isogai Y.,Research Center . | Matsui M.,Research Center . | Negishi K.,Research Center . | And 2 more authors.
Journal of Textile Engineering | Year: 2010

Clothing pressure is evaluated by clothing a human body or dummy and measuring pressure using pressure sensors. In order to predict clothing pressure using the experimental tensile properties of knitted fabrics without making actual clothes, we have developed a finite element method involving a numerical model consisting of a "hyper-elastic shell with a truss model", which expresses anisotropy and nonlinearity as a knitted fabric extension characteristic. In this report we introduce an application example using pants. The clothing pressure values predicted using this computer simulation proved to be very close to the actually measured values. © 2009 The Textile Machinery Society of Japan. Source

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