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本文对发表于国际工程断裂力学杂志第４３ 卷第５ 篇论文进行了讨论，并扩展了 Ｚ－ 断裂准则的使用范围，还推导出了复合材料特征值 Δ＜ ０ 时 Ｚ 因子的解析表达式。这些公式对航天复合材料板受弯断裂分析时非常重要。
In this paper, the paper published in the International Journal of Engineering Mechanics, Volume 43, No. 5 was discussed, and extended the scope of the Z-fracture criterion, but also derived the composite material eigenvalue Δ <0 Z factor analytical expression. These formulas are very important for the bending analysis of aerospace composite panels.