Journal
JOURNAL OF INDUSTRIAL TEXTILES
Volume 44, Issue 1, Pages 70-84Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/1528083713477442
Keywords
Fabrics/textiles; anisotropy; finite element analysis; laminate mechanics
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Funding
- German Research Foundation (Deutsche Forschungsgemeinschaft, DFG)
- Allianz Industrie Forschung (AiF) in the scope of the DFG-AiF-Cluster 'Leichtbau und Textilien' ('Lightweight Construction and Textiles') [CH 174/16-1, KR 3487/5-1, 16427 BR]
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Drape simulation of textiles is a field of research, which is known in the clothing sector for a long time. The ongoing development of high-performance composites made of textile reinforcements and matrix materials focus the interests on a serial production in many industrial sectors, such as aviation and automotive industries. Challenges occur mainly in the serial production technologies and in supplying concepts for the preform architecture and shape. Research aims on the acceleration of preform manufacturing and the reduction of expensive pretests. Numerical simulation models can help to improve the composite development chain with structure and process simulation. A special challenge in drape modeling is the bending behavior of textiles. This study introduces a novel approach for modeling single textile layers as laminates to gain a correct mechanical behavior, where all deformation mechanisms are uncoupled. The implementation in the finite element software LS-DYNA (R) is described. An algorithm is introduced which provides the membrane stiffness for each layer of a laminate to fit the measured cantilever bending stiffness of textiles in every bending direction and bending side. The calculated parameters for the laminate formulation result in the requested bending stiffness for the textile layer. The cantilever bending stiffness can be used directly for dimensioning the model.
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