Separating the panel and resin from the foam in the core layer, a physical model is developed for the elasticity analysis of the reinforced sandwich cylindrical shells by use of the finite element software ANSYS. The SOLID45 elements are used to simulate the free vibration and transient response. Considering material properties, sizes and distributions of the resin, the effects on the dynamic property of composite cylindrical shells reinforced by resinic columns and notches are separately studied. Comparison of above reinforcement is also given. The results show that both the resinic columns and the notches can affect the vibration property of the sandwich cylindrical shells. And there is an active effect on displacement response of cylindrical shells under the transient shock. The modulus influence of resin is small, while the dimension and distribution effects on dynamic property of the composite cylindrical shells are considerable. Notch reinforcement is better than the lattice style in reducing the maximum displacement under transient shocks.
ZHU Bo;ZHOU Ding;LIU Wei-qing.
Finite element analysis of reinforcement effects on vibration of composite cylindrical shells[J]. Journal of Vibration and Shock, 2012, 31(6): 42-47
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