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Numerical Investigation on Polyurea Coated Aluminum Plate Subjected to Low Velocity Impact by Yong Xia; Zitong Shi; Qing Zhou; Wenhong Ao is a Engineering article available to read on EtoBox.

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A novel three-dimensional model was established for analyzing the impact response and fracture of polyurea-coated aluminum plates using the LS-DYNA finite element code. Hyperelastic and viscoelastic constitutive models were established to characterize the impact response of polyurea, and a modified Johnson-Cook model was used to characterize the impact response of aluminum. The constitutive models of polyurea and aluminum were characterized and validated by comparing their results with those of tensile experiments under different strain rates. The simulation results of polyurea-coated aluminum plates were analyzed using the impact responses for different coating methods. Moreover, the effects of the polyurea stiffness, aluminum strength, bonding strength, and polyurea thickness on the impact resistance of polyurea-coated aluminum plates are discussed in detail. The impact peak force, energy absorption, and deformation results of the simulation of polyurea-coated aluminum plates for different coating methods were within 5% of the experimental results. Accordingly, the established model can accurately predict the fracture modes, thus demonstrating that the proposed methodology is mor

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Author

Yong Xia; Zitong Shi; Qing Zhou; Wenhong Ao

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)