预测复合材料缺口强度的场强法

THE METHOD OF STRESS FIELD INTENSITY FOR PREDICTING NOTCHED STRENGTH OF COMPOSITES

本文以复合材料缺口附近的应力应变场为参量，提出了预测复合材料缺口强度的场强法，给出了一个估计复合材料缺口强度的普遍表达式，并由此导出了一个易于使用的工程估算方法。通过对两种材料四组实验结果的分析表明：场强法的预测结果是比较满意的。

This paper presents a new method fo,predicting notched strength of composites--the method of stress field intensity,in which the intensity of stress field near the notch was taken as the parameter to esti-mate the notched specimen, but not only the peak stress value at the notch root.A general expression for predicting notcried strength was given and a formula for use easily was deduced. The results of predicting some experimental data using this method show that this new method is satisfactory.