EFFECTS OF DIFFERENT FACTORS ON THE ULTIMATE LOAD OF BONDED DCB

Abstract

Abstract: In order to get a more accurate method for predicting the ultimate load for thick bond joint in wind turbine blade, a modeling method for bond joint using the finite element method based on virtual crack closure technique (VCCT) is presented, and the effect of adhesive thickness and adherends bending stiffness on the ultimate load of the bonded double cantilever beam (DCB) is analyzed. First, the modeling method of bonded DCB is described. Then, the finite element model of test coupon is established, and the ultimate load is predicted. Finally, the ultimate load for different bond thickness and adherent bending stiffness is calculated. It is found that the simulation ultimate load is in good agreement with the experimental result. VCCT can then be used to predict the ultimate load of bonded DCB. The ultimate load of the bonded DCB will increase, as the thickness of adhesive increases. The ultimate load of the bonded DCB will increase, as the adherends bending stiffness increases. The modeling method using VCCT can be used to simulate the failure behavior for the thick bond joint in wind turbine blade.

Key words: bonded double cantilever beam, adhesive thickness, adherent bending stiffness, finite element method, virtual crack closure technique

CLC Number:

TB332

LI Zhan-ying, LU Xiao-feng, YANG Miao-yuan. EFFECTS OF DIFFERENT FACTORS ON THE ULTIMATE LOAD OF BONDED DCB[J]. Fiber Reinforced Plastics/Composites, 2019, 0(12): 34-38.

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