SIMULATION ANALYSIS OF INFLUENCE PARAMETERS OF COMPOSITE PATCH BONDED REPAIR STEEL PLATE

Abstract

Abstract: During bonding repair of steel structures, different bonding schemes have a significant effect on the repair results. In order to make a better bonding repair plan, a finite element model was established in ABAQUS, focusing on the comprehensive influence of patch size and glue layer parameters on stress intensity factor (SIF) and glue layer stress. The results show that the stress intensity factor at the crack tip can be reduced and the stress at the end of the adhesive layer can be increased by increasing the thickness of the patch and the shear rigidity of the adhesive layer. It is better to increase the thickness of patch than to increase the shear stiffness of adhesive layer. The thickness of patch is about 1.5 mm, and the shear rigidity of adhesive layer is about 5 GPa. Patch repair with equal width has better reinforcement effect on steel plate, and it is not recommended to carry out bonding repair on thicker structure.

Key words: bonding repair, stress intensity factor, adhesive stress, debonding, composites

CLC Number:

TB332

XU Ming-yang, YIN Chen-bo, LI Xiang-dong, CHEN Xi. SIMULATION ANALYSIS OF INFLUENCE PARAMETERS OF COMPOSITE PATCH BONDED REPAIR STEEL PLATE[J]. Composites Science and Engineering, 2020, 0(7): 40-44.

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