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| Titel: |
Flexible Woven Fabric Micromechanical Material Model with Fiber Reorientation |
| Auteur: |
Ivanov, Ivelin Tabiei, Ala |
| Verschenen in: |
Mechanics of advanced materials & structures |
| Paginering: | Jaargang 9 (2002) nr. 1 pagina's 37-51 |
| Jaar: |
2002-01-01 |
| Inhoud: |
A computational micromechanical material model of loosely woven fabric for finite-element nonlinear analysis and simulation is presented in this work. The model is initially developed in the MATLAB code and subsequently implemented in the nonlinear dynamic explicit finite-element code LSDYNA as a user-defined material subroutine. The material model derivation utilizes the micromechanical approach and the homogenization technique usually used in composite material models. The trellis mechanism behavior of the flexible fabric material in free state, before the packing of the yarns, is achieved by discounting the shear moduli of the yarn material. This allows reorientation of the fabric yarns and model geometrical nonlinearity in the flexible fabric. The model accounts for reorientation of the yarns up to a locking angle. Once the locking angle is reached, the yarn material shear moduli are no longer discounted. The examples show very consistent dual behavior of the material model corresponding to what is observed in experiments. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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