A comparison of certain elastic dissipation mechanisms via decoupling and projection techniques

Author:
David L. Russell

Journal:
Quart. Appl. Math. **49** (1991), 373-396

MSC:
Primary 73K05; Secondary 35Q72, 73B05, 73D35

DOI:
https://doi.org/10.1090/qam/1106398

MathSciNet review:
MR1106398

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Abstract: In this paper we study the Euler-Bernoulli elastic beam model, modified in a variety of ways to achieve an asymptotically linear relationship between damping rate and frequency. We review the so-called *spatial hysteresis* model and then introduce the *thermoelastic/shear diffusion* model, which is obtained by coupling the originally conservative elastic equations to two different diffusion processes. We then use a decoupling/triangulation process to project the coupled system onto the subspace corresponding to the lateral displacements and velocities and show that the projected system agrees in many significant respects with the spatial hysteresis model. The procedure also indicates some possibly desirable modifications in the elastic term of the spatial hysteresis model.

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Additional Information

DOI:
https://doi.org/10.1090/qam/1106398

Article copyright:
© Copyright 1991
American Mathematical Society