有限大层板承载孔的孔边应力分析

THE STRESS ANALYSIS AROUND A PIN-LOADED HOLE IN FINITE COMPOSITE LAMINATES

  • 摘要: 含圆孔的复合材料层合板, 在孔内轴销加载下的孔边应力分析, 是一个比较复杂的弹性接触问题, 板与轴销均处于十分复杂的受力状态。在文献中, 作者曾提出一个计及轴销变形与接触区摩擦效应的弹性轴销模型。本文在上述工作的基础上, 采用解析-有限元混合解法, 研究了有限大层合板承载销孔的孔边应力。分析表明, 讨算结果与实验相符。

     

    Abstract: In Ref (1) the authors of this paper put forward a elastic pin model consideringre deformation of pin and the effects of friction in contact area On the basis of above work, this paper studied the stresses around a pinloaded hole in finite laminate First, the flexibility equation of pin and the analytical expression of equivalent nodel forces around the hole have been established.Next, based on the contact conditions, and using the analytical formulas mentioned above and FEM, the FEM-anatytical mixed method is developed for calculating the stresses around a pin-loaded hole in finite laminate.Finally, a numerical example is given.The analysis shows that the results of the calculation are verp consistant with the experimental data.

     

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