Elastic–plastic contact force history and response characteristics of circular plate subjected to impact by a projectile |
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Authors: | L B Chen F Xi J L Yang |
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Institution: | (1) Solid Mechanics Research Center, Beihang University, Beijing, 100083, China;(2) Shandong Institute of Architecture and Engineering, Jinan, 250014, China |
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Abstract: | A new elastic–plastic impact–contact model is proposed in this paper. By adopting the principle of minimum acceleration for
elastic–plastic continue at finite deformation, and with the aid of finite difference method, the proposed model is applied
in the problem of dynamic response of a clamped thin circular plate subjected to a projectile impact centrally. The impact
force history and response characteristics of the target plate is studied in detail. The theoretical predictions of the impact
force and plate deflection are in good agreements with those of LDA experimental data. Linear expressions of the maximum impact
force/transverse deflection versus impact velocity are given on the basis of the theoretical results.
The project supported by the National Natural Science Foundation of China (10532020). |
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Keywords: | Elastic– plastic contact model Impact Circular plate Contact force Minimum principle of acceleration |
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