目的 以一种简单、高效的方法准确表征超混杂复合材料I型分层行为，助力该材料军用包装箱结构设计提质增效。方法 基于Timoshenko梁理论，推导超混杂复合材料I型断裂韧性与桥接应力的半解析法表达式，利用双悬臂梁试验的载荷-位移数据表征超混杂复合材料I型分层行为，对比半解析法计算结果与试验结果验证半解析法的准确性;基于半解析法结果建立的三线性内聚力模型，模拟超混杂复合材料I型分层行为，对比模拟结果与试验结果验证半解析法的准确性。结果 半解析法计算结果与试验结果吻合良好，模拟结果和试验载荷-位移曲线之间表现出较高的一致性。结论 该半解析法仅需利用双悬臂梁试验载荷-位移数据即可准确表征超混杂复合材料I型分层行为，避免目视观察裂纹扩展长度或开展额外试验测试材料参数，有效降低试验成本，减小试验误差，提高表征效率，在超混杂复合材料军用包装箱领域具有极大的应用前景。

The work aims to characterize the mode I delamination behavior of super-hybrid composite materials accurately with a simple and efficient method, to improve the quality and efficiency of the structural design of military packing boxes of such materials. Based on Timoshenko beam theory, the semi-analytical expressions of mode I fracture toughness and bridge stress of super-hybrid composite materials were derived. The load-displacement data of double cantilever beam test were used to characterize the mode I delamination behavior of super-hybrid composite materials. The accuracy of the semi-analytical method was verified by comparing the calculated results with the experimental results. Based on the results of the semi-analytical method, a trilinear cohesive force model was established to simulate the mode I delamination behavior of super-hybrid composite materials. The accuracy of the semi-analytical method was verified by comparing the simulation results with the experimental results. The calculated results of the semi-analytical method were in good agreement with the experimental results, and the simulated results were in good agreement with the experimental load-displacement curves. The semi-analytical method can accurately characterize the mode I delamination behavior of super-hybrid composite materials by the test load-displacement data of double cantilever beams only, avoid visual observation of crack propagation length or additional tests to test material parameters, effectively reduce the test cost, reduce the test error, and improve the characterization efficiency, which has great application prospects in the field of military packing of super-hybrid composite materials.