The finite element method was used to study the stress distribution of strip joints under different elastic modulus and crack length. The results show that with the elastic modulus increases, the crack tip of the peak stress also increases, which provide maximum load continue to expand on the joint crack is SY stress, while little impact to the continued crack expansion on joints is SXY stress. I-type crack perpendicular the surface Crack under the stress of characteristics; With the initial crack length increases, I-stress intensity factor present weak tendency to increase, II-stress intensity factor is still almost zero, so that even after a longer crack length, strip adhesive joints under load the fracture is still mainly based on I-type crack, which is also consistent with the strip load characteristics: external stress perpendicular to crack surface. Another I-type stress intensity factor slight increasing trend.
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