复合材料层板等强最优设计方法

 本文对复合材料无矩对称层板的最优设计,提出了一种概念直观、方法简便、收敛迅速、效果较好的等强最优设计方法。给出了几个算例的结果,并与文献1、2]的方法作了对比,结果表明,本文的方法具有显著的优越性。

AN EQUIVALENT STRENGTH METHOD FOR OPTIMUM DESIGN OF COMPOSITE LAMINATES

An equivalent strength method for optimum design , of composite laminated plates subjected to an in-plane arbitrary loading is presented as an intuitive and simple engineering method. The method affirms that the design of composite laminate is optimum when the strength ratios of each lamina are epuivalent and equal to one. This is a criterion. It can be considered that the orientations of individual ply groups are determined, but the thickness of each group can be adjusted in accordance with the principle of the equivalent strength ratio, in result the failure of statical tension,compression or shear in each ply of laminate under the designed loads happens at the same time. In design optimization by the equivalent strength method the thickness and the weight of a laminated plate are minimized. Five numerical examples are given and compared with corresponding data in references1]and2]. The results show that the equivalent strength method is better than the methods employed in references1]and2].