关键词: 紧密机织物, 高气压, 面外变形, 数学模型

Abstract:

For guiding new design on next generation of protective fabrics, the deformation mechanism of tight woven fabric under high air pressure were studied. According to the energy theory and mechanism of plates and shells, the energy balance equation for the out-of -plane deformation of tight woven fabric was established. From the minimum energy of the deformation system, the maximum deformation and deformed profile of fabric could be predicted. The out-of-plane deformation of two tight woven fabrics was measured using a self-developed fabric deformation tester. The comparison shows that the deformation is negatively correlated with the elastic modulus of fabric. The accuracy of the mathematical model is verified by experimental data. The comparison shows the model predictions with difference of less than 20% from experimental data, indicting that the analytical model can be used to predict other out-of-plane deformtion of fabrics under high air pressure.

Key words: tight woven fabric, high pressure, out-of-plane deformation, mathematical model