Dynamic response of circular arc honeycomb sandwich panel under low-speed impact

YU Yang,FU Tao

Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (5) : 214-222.

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (5) : 214-222.

Dynamic response of circular arc honeycomb sandwich panel under low-speed impact

  • YU Yang,FU Tao
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Abstract

In order to study the dynamic response of the circular curve honeycomb sandwich panel with negative Poisson's ratio under low-speed impact, based on Hamilton's principle and the first-order shear deformation theory, the motion equation of the circular curve honeycomb sandwich panel with negative Poisson's ratio is derived. Meanwhile, this study applies the mass-spring model to obtain the contact force between the spherical impactor and the sandwich panel. Besides, the Navier method and Duhamel’s integral are used to solve the vibration displacement of the sandwich panel. In terms of validity verification of theoretical model, the maximum relative error between the theoretical model and the ABAQUS finite element simulation results is 4.9%, and the maximum relative error of the contact force between the theoretical model in this paper and the published re-search is 8%, which verifies the validity of the theoretical model. The influence of the unit cell parameters on dynamic response of the circular curve honeycomb sandwich panel was studied by theoretical model. The results show that the maximum lateral displacement of the sandwich panel increases with the increasing velocity of the spherical impactor. The impact resistance of the honeycomb sandwich panel decreases with the increasing of the unit cell radius or angles, when the unit cell radius increases from 5 mm to 7 mm, the impact resistance of the honeycomb sandwich panel structure decreases by 40.28%, and when the unit cell angles increase from 30° to 60°, the impact resistance of the honeycomb sandwich panel structure de-creases by 83.64%. The impact resistance of the honeycomb sandwich panel increases with the increasing of the unit cell wall thickness, when the unit cell wall thickness increases from 1 mm to 3 mm, the impact resistance of the honeycomb sandwich panel structure increases by 59.51%. By decreasing of the unit cell radius or angles, and increasing of the unit cell thickness, the impact resistance of the circular curve honeycomb sandwich panel can be improved.

Key words

low-velocity impact / the honeycomb sandwich panel / first-order shear deformation theory / mass-spring model / ABAQUS finite element simulation

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YU Yang,FU Tao. Dynamic response of circular arc honeycomb sandwich panel under low-speed impact[J]. Journal of Vibration and Shock, 2024, 43(5): 214-222

References

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