Adhesion method of advanced composite structures for mechanical design and optimisation Online publication date: Tue, 06-Oct-2020
by Yuanyuan Wang
International Journal of Materials and Product Technology (IJMPT), Vol. 60, No. 2/3/4, 2020
Abstract: In order to overcome the low degree of fitting between the traditional bonding method and the actual working conditions, a new advanced bonding method for composite structures is proposed. The finite element simulation software NASTRAN was used to construct the finite element model of mechanical structure and obtain the damage form and path of mechanical structure. According to the relationship among adhesive strength, ply sequence and ultimate strength of bonded structure, and the relationship among the thickness of composite patch, stress intensity factor and the number of optimisation iterations, advanced bonding criteria for mechanical design and optimisation of composite structures are proposed. The experimental results show that the goodness-of-fit index (GFI) of this method is always above 0.92, the normed fit index (NFI) is above 0.96, and the comparative fit index (CFI) is above 0.92, it has the characteristics of feasibility and practicability.
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