Thermal-mechanical Analysis of Satin Weave CFRP Composites with Cracks at Cryogenic Temperatures
Thermal-mechanical Analysis of Satin Weave CFRP Composites with Cracks at Cryogenic Temperatures
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DOI：
10.1177/0731684408089133
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发表时间：
2009-01
影响因子：
3.1
通讯作者：
S. Watanabe;Y. Shindo;F. Narita;T. Takeda
中科院分区：
文献类型：
--
作者：
S. Watanabe;Y. Shindo;F. Narita;T. Takeda
本文研究了含有内部和/或边缘裂纹的缎纹编织碳纤维增强聚合物(CFRP)层合板在低温拉伸下的热机械行为和材料性能。假设裂纹位于横向纤维束中，并延伸到两个纤维束之间的界面。通过假定广义平面应变的有限元模型，预测了在机械和热联合载荷作用下裂纹尖端附近的杨氏模量值和应力分布。计算了残余热应力和裂纹对CFRP编织层合板低温力学行为的影响，并以图形的形式给出了数值结果。
This study deals with the thermal-mechanical behavior of satin weave carbon fiber-reinforced polymer (CFRP) laminates with internal and/or edge cracks and temperature-dependent material properties under tension at cryogenic temperatures. Cracks are assumed to be located in the transverse fiber bundles and extend to the interfaces between two fiber bundles. Young's modulus and stress distributions near the crack tip under combined mechanical and thermal loads are predicted by finite element models that assume generalized plane strain. The effects of residual thermal stresses and cracks on the mechanical behavior of CFRP woven laminates at cryogenic temperatures are calculated, and the numerical results are presented in graphical form.