Journal
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
Volume 18, Issue 1, Pages 63-74Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cnsns.2012.06.017
Keywords
One-dimensional elastic continua; Nonlocal elasticity; Fractional calculus; Wave propagation
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Funding
- Italian Ministry of Education, University and Research (MIUR) [RBFR107AKG]
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In the present paper, the wave propagation in one-dimensional elastic continua, characterized by nonlocal interactions modeled by fractional calculus, is investigated. Spatial derivatives of non-integer order 1 < alpha < 2 are involved in the governing equation, which is solved by fractional finite differences. The influence of long-range interactions is then analyzed as alpha varies: the resonant frequencies and the standing waves of a nonlocal bar are evaluated and the deviations from the classical (local) ones, recovered by imposing alpha = 2, are discussed. (c) 2012 Elsevier B.V. All rights reserved.
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