2.5维机织复杂结构件的静强度

刘浩龙; 崔海涛; 温卫东

doi:10.13224/j.cnki.jasp.2015.03.016

2.5维机织复杂结构件的静强度

doi: 10.13224/j.cnki.jasp.2015.03.016

南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室, 南京 210016

基金项目:

中央高校基本科研业务费专项资金(56XZA13085)

详细信息

作者简介:
刘浩龙(1988-),男,山东滨州人,硕士生,主要从事先进复合材料力学性能研究.

中图分类号: V258
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- 文章访问数: 960
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- 被引次数: 0
出版历程
- 收稿日期: 2013-10-23
- 刊出日期: 2015-03-28

Static strength of 2.5 dimensional woven complex structures

Jiangsu Province Key Laboratory of Aerospace Power system, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 采用宏细观结合方法,针对经纱和纬纱等材料组分可能发生的多种失效模式,分别建立了基于改进的Hashin准则的系统性的材料失效准则及不同失效模式下的刚度退化模型.引入逐渐损伤的思想,建立了2.5维机织复杂结构件静强度系统性分析方法.模拟并分析了材料经向拉伸和纬向拉伸的应力-应变曲线,与实验得到的材料应力-应变曲线相比,相同应变下应力误差不超过6.5%,具有较好的重合度;对2.5维机织压气机静子连接结构模拟件开展了逐渐损伤模拟,结果表明:结构损伤主要集中在叶根倒角附近,其中吸力面叶根处的基体压缩失效形式会引起结构大幅变形,是结构破坏的主要原因.
- 2.5维机织复合材料 /
- 结构静强度 /
- 失效模式 /
- 刚度退化 /
- 逐渐损伤
Abstract: From the perspective of macro and micro combinations, a series of failure criterions and corresponding stiffness reduction methods for multi-failure models of warps and wefts were developed based on modified Hashin criterion. Systematic static strength analytical method for 2.5 dimensional woven complex structures was presented based on gradually damage concept. Also, the tension stress-strain curves along the warp and weft were simulated, and the fitting curves were in good agreement with the experimental results with the errors of calculated stress less than 6.5% for given strains; and for 2.5 dimensional woven connection structure simulation of compressor, gradually damage process was simulated. The result shows that main damage of the structure occurs around the chamfer of the root; specifically, matrix compress failure on the root of suction surface can cause great deformation as a major cause of the destruction of the structure.
- 2.5 dimensional woven composite /
- structural static strength /
- failure model /
- stiffness reduction /
- gradually damage

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