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| Buckling of Rectangular Delamination Bridged by Fibers |
| DI San-Dong, ZHANG Yang, LI Si-Ping |
| (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract The problem of buckling of delamination stitched with fiberbridge in 3D composites was solved by FEA. Linear springs of tensiononly or compressiononly distributed on the nodes of delamination cells are used to simulate the fibers and substrate respectively. The problem of eigenvalue buckling is transformed into the problem of geometric nonlinearities with an initial imperfection and solved by FEA of incremental nonlinear structural analysis. The results show that there are period contact points (districts) between delamination and substrate. And as the elastic coefficient of the fiber bridge increases, the critical buckling loads may also increase. The relation of the characteristic length and fiberbridge is expressed by mathematical formula.
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Received: 29 October 2010
Published: 31 October 2011
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