不同加载条件下复合材料层合无限板圆孔裂纹的应力强度因子

2008 First International Conference on Emerging Trends in Engineering and Technology Pub Date : 2008-07-16 DOI:10.1109/ICETET.2008.98

D. Sharma, V. G. Ukadgaonker

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引用次数: 3

摘要

利用Muskhelishvilipsilas复变方法，得到了任意纤维取向和堆叠顺序的复合材料层合无限板在任意载荷作用下圆形孔裂纹应力强度因子的一般解。在给定边界条件下，通过求Schwarzpsilas积分得到应力函数。利用MATLAB 6.5对所得的广义公式进行了编码，并得到了数值结果。研究了正交各向异性和各向同性板的裂纹取向、加载方式和纤维取向的影响。针对某些情况，在ANSYS中建立了半裂纹面应力模型，并与现有方法进行了比较。

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Stress Intensity Factors for Cracks Emanating from a Circular Hole in Laminated Composite Infinite Plate Under Different Loading Conditions

General solutions for determining the stress intensity factors, for cracks emanating from circular hole in laminated composite infinite plate subjected to arbitrary loading, with layers of arbitrary fiber orientations and stacking sequence, are obtained using Muskhelishvilipsilas complex variable method. The stress functions are obtained by evaluating Schwarzpsilas integral for the given boundary conditions. The generalized formulation thus obtained is coded and numerical results are obtained using MATLAB 6.5. The effect of crack orientation, loading pattern and fiber orientation is studied for orthotropic and isotropic plates. For some of the cases half crack plane stress model are prepared in ANSYS and results are compared with present method.

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2008 First International Conference on Emerging Trends in Engineering and Technology

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