| Prediction of Buckling of Plain Knitted Fabric Sheets Subjected to Simple Shear in Wale Direction |
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| 作者姓名： | 张义同 敖涛 徐家福 |
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| 作者单位： | School of Mechanical Engineering Tianjin University，School of Mechanical Engineering，Tianjin University，School of Mechanical Engineering，Tianjin University，Tianjin 300072，China，Tianjin 300072，China，Tianjin 300072，China |
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| 摘 要： | Knitted fabric is very different from woven fabric due to its more complicated knitting structures. The buckling of knitted fabric sheets subjected to simple shear in the wale direction is investigated analytically in consideration of the large deformation of fabric sheet in critical configuration. The theory on instability of finite deformation is applied to the analysis. All the stress boundary conditions of knitted fabric sheet are satisfied. An equation to determine the buckling direction angle is derived. It is shown that there are two possible buckling modes, flexural mode and barreling mode. The buckling condition equations for the flexural mode and barreling mode are also obtained respectively. Numerical illustrations reveal that only the flexural mode can actually occur and the barreling mode cannot, which agrees with the experimental observations. For a permitted buckling mode on margin boundaries, the critical value of shear amount and the buckling direction angle can be determined.
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| 关 键 词： | 针织物 编织结构 起皱现象 波状变形 |
Prediction of Buckling of Plain Knitted Fabric Sheets Subjected to Simple Shear in Wale Direction |
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| ZHANG Yitong,AO Tao,XU Jiafu.Prediction of Buckling of Plain Knitted Fabric Sheets Subjected to Simple Shear in Wale Direction[J].Transactions of Tianjin University,2007,13(6):391-397. |
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| Authors: | ZHANG Yitong AO Tao XU Jiafu |
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| Institution: | School of Mechanical Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | Knitted fabric is very different from woven fabric due to its more complicated knitting structures. The buckling of knitted fabric sheets subjected to simple shear in the wale direction is investigated analytically in consideration of the large deformation of fabric sheet in critical configuration. The theory on instability of finite deformation is applied to the analysis. All the stress boundary conditions of knitted fabric sheet are satisfied. An equation to determine the buckling direction angle is derived. It is shown that there are two possible buckling modes, flexural mode and barreling mode. The buckling condition equations for the flexural mode and barreling mode are also obtained respectively. Numerical illustrations reveal that only the flexural mode can actually occur and the barreling mode cannot, which agrees with the experimental observations. For a permitted buckling mode on margin boundaries, the critical value of shear amount and the buckling direction angle can be determined. |
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| Keywords: | knitted fabric knitting structure buckling wrinkling simple shear |
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