含表面缺口复合材料层压板起裂的研究

本文根据广义剪滞理论，利用最小势能原理计算了含表面缺口复合材料层压板各点的应力状态．在此基础上、根据Ｔｓａｉ—Ｈｉｌｌ淮则预测了表面缺口起裂的载荷值，并讨论了该值与表面缺口的宽度、缺口前缘板层的铺设方向、缺口形式之间的关系．结论是有意义的．并为复合材料层压板的设计和使用提供了有效的理论依据．

The Growth Study of Composite Laminate with Surface Notch

n the basis of the generalized shear--]ag therory, the stress state of composite laminate with surface notch is computed by using of the minmum potential energy in this paper. The load causing damage first in laminate is predicted by using Tsai--Hill criterion and its variation with the width of the surface notch, the fiber's orientation at the front of the notch and the shape of the surface notch is discussed. The results are interesting and can be uesd as the theortical basis for the design and use of the corn posite lain mate.