The dynamic lateral compression of unloaded fabric panels is studied under forced vibration at frequencies ranging from 5-105 Hz, as part of an investigation into the scientific understanding of vibratory feeding and orientation of fabrics for garment automation. Frequency scans of several fabrics indicate that textiles with a low static compressibility behave like a stiff spring, while others behave like a second-order system. Dynamic stiffness and damping depend on the excitation and are implemented in a Kelvin-Voigt model. Both viscous and hysteretic damping are investigated, and a com parison shows that the simpler viscously damped system gives an adequate first-approx imation to the experimental data.
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