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Failure and Broken Criteria for 2.5D Woven Composites Loaded in Weft
Abstract:
2.5D woven composites has been used broadly. But its failure reason and process has not been researched clearly. To describe whole the tensile process in weft direction exactly, Based on the yield criteria ,yield criteria and elastic mould reduced rule are consummated to analyze the process of yield process; Meantime, Hoffman failure criteria is used to analyze the broken process and the corresponding elastic mould reduced rules is given. FEA method is adopted to simulate and analyze the whole tensile process of 2.5D woven composites in weft load at last. To verify the failure criteria and the corresponding elastic mould reduced rule, weft –tensile tests of six kind of 2.5D composites have been done. Results of contrast show that failure criteria and the corresponding elastic mould reduced rule is very suit for 2.5D woven composites. The whole failure progress for a sample with hole are simulated at the end of this paper.
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771-777
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Online since:
February 2012
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© 2012 Trans Tech Publications Ltd. All Rights Reserved
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