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Implementation of Viscoelastic Behavior in a Time Domain Boundary Element Formulation

[+] Author and Article Information
M. Schanz, L. Gaul

University of the Federal Armed Forces Hamburg, Postfach 70 08 22, D-22008 Hamburg, Federal Republic of Germany

Appl. Mech. Rev 46(11S), S41-S46 (Nov 01, 1993) doi:10.1115/1.3122656 History: Online April 29, 2009

Abstract

The boundary element method (BEM) provides a powerful tool for the calculation of elastodynamic response in frequency and time domain. Field equations of motion and boundary conditions are cast into integral equations, which are discretized only at the boundary. The boundary data often are of primary interest because they govern the transfer dynamics of members and the energy radiation into a surrounding medium. Formulations of BEM currently include conventional viscoelastic constitutive equations in the frequency domain. In the present paper viscoelastic behaviour is implemented in a time domain approach as well. The constitutive equations are generalized by taking fractional order time derivatives into account.

Copyright © 1993 by American Society of Mechanical Engineers
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