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对用不同增韧方法制成的环氧树脂材料进行了断裂性能分析，结合有限元计算，得到了裂尖约束以及不同增韧方法对裂尖应力应变场的影响。同时，给出了裂尖钝化半径与裂纹尖端应力应变场的关系，指出：在一定的载荷水平下，可以有效地降低裂纹尖端的应力水平，降低裂纹尖端的三轴应力度，提高结构的承载水平。本文还指出增韧有利于提高材料的断裂性能，降低裂纹尖端的三轴应力度。
The fracture properties of the epoxy resin materials made by different toughening methods were analyzed. The influence of crack tip constraints and different toughening methods on the stress and strain fields of cracked tips were obtained by the finite element method. At the same time, the relationship between the crack tip passivation radius and the crack tip stress-strain field is given. It is pointed out that under a certain load level, the stress level at the crack tip can be effectively reduced, the triaxial stress at the crack tip can be reduced, Carrying level. The article also pointed out that toughening is beneficial to improve the fracture properties of materials and reduce the triaxial stress of crack tip.