纤维复合材料构件的受力分析原理

On the Principle of the Mechanical Analysis of the Members Consisting of the Fibrous Composite Materials

纤维复合材料与钢筋混凝土有本质上的一致性 ,即在一种连续介质 (基体 )中镶嵌另一种连续介质 (劲料 )组成。为了揭示这种材料组成的构件受力后的内效应 (如应力、应变 ) ,建立起这类构件的分析模型 ,采用两种介质的力学特性分阶段赋予的方法并找出了两种介质均处于弹性阶段时材料相间界面上的相互牵连作用。

Composite materials are essentially identicaly with reinforced concretes, that is some continuum (reinforced material is inlaid other continuuml (base material). To reveal the inner effect of the members (stress and strain) consisting of these materials this paper finds out the mutual effect of the two materials at the boundary surfaces where they are subjected to elastic phase by means of applying a method of stepped endowing the mechanical properties of the two materials. This mutual effect is a surface restraint which is quantitatively determined in this paper. If the surface restraint is indicated as an external force, the stresses induced in the cingle phase material can be calculated logically. Since the stress redistribution can be determined, the process resolving the stresses in the composite material fibers becomes reasonable extension determining the stresses based on the elasticity. The viewpoint in this paper has been confirmed partially by some experimental results.