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Random field formulation of composite laminates

机译：复合材料层压板的随机场配方

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摘要

A numerical simulation algorithm is developed in the present paper in order to characterize the random strength distribution of a batch of composite laminates. The program is based on the assumption Th the axial, transverse and shear strengths of the composite lamina are statistically characterized by two-dimensional random fields. Monte Carlo method is employed to generate these strengths. When loading is applied to the composite laminate, the resultant stresses are then compared with the generated strengths of the lamina based on Tsai-Hill or Tsai-Wu criterion. The strength of the laminate is then determined. Owing to the random strength distributions of the lamina, the strength of the composite laminate In order to verify the above simulation algorithm, experiment work is conducted in the present study. It is found that the proposed simulation algorithm can adequately capture the behavior of the experimental result. It is also concluded that, for the strength of the studied amanitas, both the numerical simulation and experimental results can be fitted well by the Norma probability density function.
机译：为了表征一批复合材料层压板的随机强度分布，本文开发了一种数值模拟算法。该程序基于以下假设：复合薄片的轴向，横向和剪切强度可以通过二维随机场进行统计表征。蒙特卡罗方法被用来产生这些优势。当将载荷施加到复合材料层压板上时，然后将合成应力与基于Tsai-Hill或Tsai-Wu准则的层板的生成强度进行比较。然后确定层压板的强度。由于层板的随机强度分布，复合层压板的强度为了验证上述仿真算法，在本研究中进行了实验工作。发现所提出的仿真算法可以充分捕获实验结果的行为。还得出结论，对于研究的鹅膏菌的强度，数值模拟和实验结果都可以通过Norma概率密度函数很好地拟合。

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