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Experimental Investigation of Folding Damage for the Rigidizable Carbon-Epoxy Composites

Journal of Materials Science & Technology 2005年第4期21卷 577-580页

作者： Youshan WANG Zhimin XIE Zhimin WAN Xingwen DU Center for Composite Materials Harbin Institute of Technology Harbin 150001 China Analysis and Measurement Center Harbin Institute of Technology Harbin 150001 China

This paper focused on the folding damage behavior of the space rigidizable materials in terms of 3-1ayer composite membranes. An experimental scheme was presented. The composite membranes were folded between the two plates for a short time, and then the unfolded composite membranes were compressively cured in an oven. By adjusting the displacement of one plate, the folding radius was changed. As expected, the strength and effective modulus of the cured composite membranes drop with decreasing the folding radius. When the strain controlled failure rule is appliedto the composite membranes, a minimal folding radius can be reached, beyond which the membranes will keep ***, folding damage due to folding and unfolding processes was evaluated by a simplified model. Compared with the measured residual strength and effective modulus, calculated results have the same trend. A discrepancy is attributed to neglecting the effects of the transverse fibers and the matrix.

关键词： inflatable structure Fabric Damage Folding

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A new method of complicated folded fabric modeling

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Journal of Harbin Institute of Technology(New Series) 2012年第2期19卷 43-46页

作者：程涵余莉殷柱伟 College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics Test Center of Expertise Hewlett-Packard Company

In order to resolve the complicated folded fabric modeling problem and establish the high quality finite element model for fabric working simulation in aviation or aerospace area,the Fluid structure Interaction(FSI) method based on Arbitrary Lagrangian Eulerian(ALE) coupling theory was applied for modeling in this *** expanded three-dimensional fabric model(a special airbag) was divided into several *** the folded state of each was calculated based on this numerical *** last,the completely folded finite element model was *** method can effectively simulate the complicated and natural folds,and the quality of model is very high which can greatly improve the success rate of fabric working process *** method also can be guidance for other kinds of folded fabric modeling.

关键词： fabric fold ALE FSI inflatable structure

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Shape control of multi-cellular infatable panels

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Frontiers of Mechanical Engineering 2013年第3期8卷 276-282页

作者： N.KATAYAMA K.ISHIMURA K.MINESUGI DANIEL J.INMAN The Graduate University for Advanced Studies Japan Aerospace Exploration Agency Department of Aerospace Engineering University of Michigan

Multi-cellular infatable structures are ultralight and robust against membrane damage such as pinholes caused by space *** to their robustness,infatable structures supported by inner gases can be applied as space *** the present study,shape control for a simple multi-cellular infatable panel was achieved via a novel diaphragm *** the bending actuator in a center membrane bends,the inner pressures of sub-cells become different,and the diaphragm mechanism bends as a *** a sliding component is not included,this deformable system is a reliable *** addition,the proposed mechanism has higher rigidity than that of a bending actuator used *** the present paper,we investigate the feasibility of a novel diaphragm mechanism and its characteristics using experimental and numerical results.

关键词： Membrane structures inflatable structure shape control smart structures structural mechanics space engineering

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