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About well-posedness and lack of exponential stability of Shear beam models

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Abstract

In this paper, we consider the Shear beam model (no rotary inertia) and we stablished a decay result of the total energy of solutions by taking a feedback law acting on angle rotation. Unlike the dissipative Shear beam model with damping effect acting on vertical displacement, where the exponential decay holds irrespective any relationship between coefficients of the system, here we prove that system is non-exponential stability by using semigroup techniques. Also, the well-posedness is achieved by using semigroup theory.

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Acknowledgements

The authors would like to thank the anonymous referee for critical review and valuable comments which allowed to improve the paper.

Funding

A. J. A. Ramos thanks the CNPq for support through Grant No. 310729/2019-0.D.S. Almeida Júnior thanks the CNPq for support through Grant No. 314273/2020-4.M. M. Freitas thanks the CNPq for support through Grant No. 313081/2021-2.

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Correspondence to A. J. A. Ramos.

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Ramos, A.J.A., Almeida Júnior, D.S., Freitas, M.M. et al. About well-posedness and lack of exponential stability of Shear beam models. Ann Univ Ferrara 68, 129–136 (2022). https://doi.org/10.1007/s11565-022-00391-z

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  • DOI: https://doi.org/10.1007/s11565-022-00391-z

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