Abstract
Wearing comfort of clothing is dependent on air permeability, moisture absorbency and wicking properties of fabric, which are related to the porosity of fabric. In this work, a plug-in is developed using Python script and incorporated in Abaqus/CAE for the prediction of porosity of plain weft knitted fabrics. The Plug-in is able to automatically generate 3D solid and multifilament weft knitted fabric models and accurately determine the porosity of fabrics in two steps. In this work, plain weft knitted fabrics made of monofilament, multifilament and spun yarn made of staple fibers were used to evaluate the effectiveness of the developed plug-in. In the case of staple fiber yarn, intra yarn porosity was considered in the calculation of porosity. The first step is to develop a 3D geometrical model of plain weft knitted fabric and the second step is to calculate the porosity of the fabric by using the geometrical parameter of 3D weft knitted fabric model generated in step one. The predicted porosity of plain weft knitted fabric is extracted in the second step and is displayed in the message area. The predicted results obtained from the plug-in have been compared with the experimental results obtained from previously developed models; they agreed well.
Highlights
Porosity is the ratio of void space within the boundaries of solid material to the total volume of solid material, including void spaces, defined by Guidoin [1]
In this work plain weft knitted fabrics made of different yarn, such as monofilament, multifilament and staple fiber, were used in order to evaluate the effectiveness of the developed plug-in
The plain weft knitted fabrics made from different types of yarns including monofilament and multifilament yarns were used in order to evaluate the effectiveness of the developed plug-in
Summary
Porosity is the ratio of void space within the boundaries of solid material to the total volume of solid material, including void spaces, defined by Guidoin [1]. He developed equations for porosity of solid material in terms of percentage: V Vt (1) M L m (2). Benltoufa et al [2] investigated the different methods for the estimation of the porosity of jersey fabric They found that the most effective way for the determination of porosity is the use of geometrical modeling. The proposed model for prediction the porosity of plain knitted fabric by Benltoufa is shown in Equation 3
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