In this chapter, fractional calculus has been used to account for long-range interactions between material particles. Cohesive forces have been assumed decaying with inverse power law of the absolute distance that yields, as limiting case, an ordinary, fractional differential equation. It is shown that the proposed mathematical formulation is related to a discrete, point-spring model that includes non-local interactions by non-adjacent particles with linear springs with distance-decaying stiffness. Boundary conditions associated to the model coalesce with the well-known kinematic and static constraints and they do not run into divergent behavior. Dynamic analysis has been conducted and both model shapes and natural frequency of the non-local systems are then studied.

Cottone, G., Di Paola, M., Zingales, M. (2009). Fractional mechanical model for the dynamics of non-local continuum. In Nikos Mastorakis and John Sakellaris (a cura di), Advances in Numerical Methods (pp. 389-423). Berlin : Springer [10.1007/978-0-387-76483-2].

Fractional mechanical model for the dynamics of non-local continuum

COTTONE, Giulio;DI PAOLA, Mario;ZINGALES, Massimiliano
2009-01-01

Abstract

In this chapter, fractional calculus has been used to account for long-range interactions between material particles. Cohesive forces have been assumed decaying with inverse power law of the absolute distance that yields, as limiting case, an ordinary, fractional differential equation. It is shown that the proposed mathematical formulation is related to a discrete, point-spring model that includes non-local interactions by non-adjacent particles with linear springs with distance-decaying stiffness. Boundary conditions associated to the model coalesce with the well-known kinematic and static constraints and they do not run into divergent behavior. Dynamic analysis has been conducted and both model shapes and natural frequency of the non-local systems are then studied.
2009
Cottone, G., Di Paola, M., Zingales, M. (2009). Fractional mechanical model for the dynamics of non-local continuum. In Nikos Mastorakis and John Sakellaris (a cura di), Advances in Numerical Methods (pp. 389-423). Berlin : Springer [10.1007/978-0-387-76483-2].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/41539
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