Analytical model and characteristics of circular breathing crack stiffness of composite rotor

doi:10.19936/j.cnki.2096-8000.20220928.003

Abstract

Abstract: The carbon fiber reinforced plastic transmission shaft is a new type of high-performance transmission component, but the composite transmission rotor is easy to cause circular crack in the manufacturing process or when it is collided. In this paper, the stiffness analytical model of the circular breathing crack of composite transmission rotor is established based on the Layer-wise theory of composite structures, which considers the influence of orientation angle and stacking sequence at the crack, and is verified by finite element model. Then the stiffness of composite cracked rotor with the same size and different laminate schemes are compared. The results show that the analytical model proposed in this paper has good accuracy, and the ratio of 0° ply at the circular breathing has a great influence on the bending stiffness of the shaft tube. What′s more, the stacking sequence of the 0° ply has little effect on the bending stiffness, which can be ignored.

Key words: composite rotor, circular breathing crack, analytical model, laminate parameters

CLC Number:

TB332

YANG Mo, XUAN Hao, XIONG Wei, LIU De-zheng, QIN Tao, LU Yi. Analytical model and characteristics of circular breathing crack stiffness of composite rotor[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(9): 23-27.

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