Plastic dynamic response of a foam-core sandwich plate subjected to rectangular mass impact loading

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (14) : 114-119.

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Plastic dynamic response of a foam-core sandwich plate subjected to rectangular mass impact loading

WANG Qi1，XIAO Wen2,3，LI Yinggang*2,3，LI Xiaobin2,3

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Abstract

In this paper, a theoretical model on plastic dynamic response of foam-core sandwich plate subjected to rectangular mass impact loading is established based on the rigid-perfectly plastic material assumption and the power conservation principle. Numerical simulation of PVC foam core sandwich plate under rectangular mass impact was carried out to verify the accuracy of the theoretical model. In addition, the influences of impactor width and foam core thickness on the impact response of foam core sandwich plate are theoretically analyzed. Results shows that the theoretical prediction results on plastic dynamic response of foam-core sandwich plate subjected to rectangular mass impact show good agreements with numerical results. The increase of loading concentration results in severer plastic deformation, the increase of foam core thickness can improve the impact resistance of foam core sandwich structures.

Key words

Rectangular mass impact loading / Foam-core sandwich plate / Rigid-perfectly plastic theory / Plastic dynamic response / Numerical validations

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WANG Qi1, XIAO Wen2, 3, LI Yinggang2, 3, LI Xiaobin2, 3. Plastic dynamic response of a foam-core sandwich plate subjected to rectangular mass impact loading[J]. Journal of Vibration and Shock, 2025, 44(14): 114-119

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