动力松弛法在复合材料叠层板非线性弯曲问题中的应用
APPLICATION OF THE DYNAMIC RELAXATION METHOD TO THE NON-LINEAR BENDING OF COMPOSTIE LAMINATES
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摘要: 动力松弛法是近十多年来提出并发展的一种数值方法。本文探讨了该法在复合材料叠层板非线性弯曲问题上的应用,推导了用于求解该问题的重要参数——虚拟密度的一般计算公式,用该公式对对称正交铺设及反对称角铺设叠层矩形板进行了数值计算,其结果与试验吻合得较好。Abstract: Dynamic relaxation method as a new numerical method has been developed since 1960. The present paper investigates its application in the nonlinear bending of rectangular composite laminates.The general formulae are derived for fictitious densities which are important parameters in the solution of problems studied.These formulae are then applied to the numerical analysis of the nonlnenr bending of symmetric cross-ply and unsymmetric angle-ply rectangular laminates.The computational results agree well with rxperiments.
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