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On the dynamic vibrations of an elastic beam in frictional contact with a rigid obstacle

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Abstract

Existence and uniqueness results are established for weak formulations of initial-boundary value problems which model the dynamic behavior of an Euler-Bernoulli beam that may come into frictional contact with a stationary obstacle. The beam is assumed to be situated horizontally and may move both horizontally and vertically, as a result of applied loads. One end of the beam is clamped, while the other end is free. However, the horizontal motion of the free end is restricted by the presence of a stationary obstacle and when this end contacts the obstacle, the vertical motion of the end is assumed to be affected by friction. The contact and friction at this end is modelled in two different ways. The first involves the classic Signorini unilateral or nonpenetration conditions and Coulomb's law of dry friction; the second uses a normal compliance contact condition and a corresponding generalization of Coulomb's law. In both cases existence and uniqueness are established when the beam is subject to Kelvin-Voigt damping. In the absence of damping, existence of a solution is established for a problem in which the normal contact stress is regularized.

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Authors and Affiliations

  1. Department of Mathematical Sciences, Oakland University, 48309-4401, Rochester, MI, USA

    Kevin T. Andrews, M. Shillor & S. Wright

Authors
  1. Kevin T. Andrews
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  2. M. Shillor
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  3. S. Wright
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Additional information

The work of the last two authors was supported in part by Oakland University Research Fellowships.

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Andrews, K.T., Shillor, M. & Wright, S. On the dynamic vibrations of an elastic beam in frictional contact with a rigid obstacle. J Elasticity 42, 1–30 (1996). https://doi.org/10.1007/BF00041221

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  • DOI: https://doi.org/10.1007/BF00041221

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