| 范学领,孙秦.复合材料分层断裂判据及扩展准则研究[J].计算力学学报,2011,28(3):479~482,487 |
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| 复合材料分层断裂判据及扩展准则研究 |
| Study on composites delamination initiation and propagation criterion |
| 投稿时间：2009-11-06 修订日期：2010-09-08 |
| DOI：10.7511/jslx201103029 |
| 中文关键词: 分层损伤 应变能释放率 模式混合度 |
| 英文关键词:delamination strain energy release rate (SERR) mode-mixing |
| 基金项目:国家自然科学基金(11002104),博士后科学基金(20100481340)资助项目. |
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| 中文摘要: |
| 针对现有层间开裂判据及扩展准则未考虑断裂模式耦合性的现状,本文提出了基于模式混合度的复合材料分层断裂判据及扩展准则。依此模型计算了蒙皮/凸缘复合材料加筋层合板结构的分层扩展行为。计算结果表明,所提出的开裂判据及扩展准则能够较好的预测蒙皮/凸缘复合材料加筋层合板结构的断裂力学行为,所得结果对确定含损伤复合材料加筋层合板结构的剩余承载能力具有参考价值。 |
| 英文摘要: |
| To take into account of the coupling effects of different fracture modes for composites interface crack under mixed mode loading conditions, a novel fracture onset and growth criterion was proposed based on mode-mixing. In addition, the application of the criterion for predicting delaminaiton in modern aeronautical composite skin/stringer structures was also studied. The good correlation of the results demonstrated the effectiveness of the proposed criterion. |
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