复合材料薄壁结构连接件细节内力分析的有限元方法

A FEM ANALYSIS OF THE INTERNAL FORCES ON THE DETAILS ON FASTENED JOINTS OF A THIN-WALLED STRUCTURE MADE OF COMPOSITE MATERIALS

为得到复合材料薄壁结构机械连接件中各承力元件的内力和变形情况,确定各承载紧固孔的旁路载荷(P_(PL))和钉传载荷(P_(dc)),以便合理地进行连接件的细节设计和强度分析,本文基于迭层板“等效弹性模量”概念,提出了一套工程实用的复合材料结构连接件细节内力分析的有限元方法。所编制的计算程序适用于对实际结构中各种机械连接型式和各种平面受载情况的内力计算和分析。

In order to get the internal forces and deformations of the load-bearing parts in the mechanically fastened joints on the thin-walled structure made of composite materials as well as to determine the by-pass load (Ppl) and the pin-load(Pdc), this paper presents a FEM for detailed analysis of the internal forces on the basis of the concept of 'equivalent elastic modulus' for the laminated plate. The computer program designed is applicable to analyses and computation of the internal forces of the actual structures having various mechanically connections as well as those parts subjected to various plane loadings.