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本文试图从理论角度进行分析,利用单孔平板通过有限元方法,计算按余弦规律加载的孔周应力分布,并通过十一种迭层计算结果的分析,探讨铺层设计参数对孔边应力集中及应力分布的影响。主要结论是:加载孔与非加载孔应力集中系数是不同的;不同的迭层加载孔应力集中系数也不同,随着0°分层比例的增加,应力集中系数增大。为了减小孔边的应力集中系数,在0°铺层中增加±45°分层“软化”效果较好。
This paper attempts to analyze from the theoretical point of view, the use of single-hole plate through the finite element method to calculate the cosine law according to the loading of the perimeter of the pore stress distribution and through the analysis of the results of eleven layers to explore the laying of the design parameters on the hole edge stress concentration And the impact of stress distribution. The main conclusion is that the stress concentration factor is different between loading hole and non-loading hole. The stress concentration factor of loading hole is different also for different layers. With the increase of 0 ° stratification ratio, the stress concentration factor increases. In order to reduce the stress concentration factor at the edge of the hole, it is better to add ± 45 ° stratification in 0 ° ply stratification.