| 引用本文: | 吴海,肖加余,邢素丽,等.弯曲载荷作用下复合材料T型接头的失效分析.[J].国防科技大学学报,2016,38(1):56-62.[点击复制] |
| WU Hai,XIAO Jiayu,XING Suli,et al.Failure analysis of composite T-joints under bending load[J].Journal of National University of Defense Technology,2016,38(1):56-62[点击复制] |
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| 弯曲载荷作用下复合材料T型接头的失效分析 |
| 吴海, 肖加余, 邢素丽, 文思维, 杨孚标, 杨金水 |
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(国防科技大学 航天科学与工程学院， 湖南 长沙 410073)
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| 摘要: |
| 运用蔡-吴逐步失效判据和黏聚接触模型建立弯曲加载下的T型接头的有限元模型。对复合材料T型接头在弯曲加载下的损伤机理和承载能力进行数值模拟。结合静态弯曲加载实验，揭示T型接头在弯曲破坏过程中的四种失效模式。T型接头的弯曲失效载荷的有限元模型计算结果与实测值吻合较好。 |
| 关键词: T型接头 蔡-吴逐步失效判据 黏聚接触模型 失效模式 弯曲失效 |
| DOI：10.11887/j.cn.201601010 |
| 投稿日期：2015-03-16 |
| 基金项目:湖南省重大科技专项资助项目（2011FJ1001） |
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| Failure analysis of composite T-joints under bending load |
| WU Hai, XIAO Jiayu, XING Suli, WEN Siwei, YANG Fubiao, YANG Jinshui |
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(College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| A finite element model of the composite T-joints under bending load was established. The Tsai-Wu failure criterion and a cohesive zone model were used to simulate and analyze the failure mechanisms and carrying capacities of the composite T-joints under bending load. By static bending experiments, four failure modes have been investigated during bending failure processes of the composite T-joints. The maximum bending load of the T-joint calculated by finite element model methods was consistent well with experimental results. |
| Keywords: T-joints Tsai-Wu failure criterion surface-based cohesive behavior failure modes bending failures |
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