2017/07/31 by Francesco Mainardi, Enrico Masina, Giorgio Spada
Engineering · Materials Science · Mathematics · Physics and Astronomy · #Classical mechanics #Creep #Dissipation #Exponential function #Fractional Differential Equations Solutions #Function (biology) #Generalization #Material Dynamics and Properties #Mathematical analysis #Mathematical physics #Mathematics #Order (exchange) #Physics #Relaxation (psychology) #Rheology #Thermodynamics #Thermoelastic and Magnetoelastic Phenomena #Viscoelasticity #cond-mat.mtrl-sci #math-ph #math.MP #msc:44A10 #msc:45D05 #msc:74D05 #msc:74L10 #msc:76A10 #physics.geo-ph
paper · pdf · doi:10.1007/s11043-018-9381-4
published as Mechanics of Time-Dependent Materials, published on line 02 February 2018 · 18 pages, 8 figures. arXiv admin note: text overlap with arXiv:1701.03068
openalex created_date 2017/07/31 · openalex publication_date 2018/02/02 · arxiv created 2018/02/28 · arxiv updated 2018/03/01 · openalex updated_date 2026/08/05
We present a new rheological model depending on a real parameter ν∈ [0,1] that reduces to the Maxwell body for ν=0 and to the Becker body for ν=1. The corresponding creep law is expressed in an integral form in which the exponential function of the Becker model is replaced and generalized by a Mittag-Leffler function of order ν. Then, the corresponding non-dimensional creep function and its rate are studied as functions of time for different values of ν in order to visualize the transition from the classical Maxwell body to the Becker body. Based on the hereditary theory of linear viscoelasticity, we also approximate the relaxation function by solving numerically a Volterra integral equation of the second kind. In turn, the relaxation function is shown versus time for different values of ν to visualize again the transition from the classical Maxwell body to the Becker body. Furthermore, we provide a full characterization of the new model by computing, in addition to the creep and relaxation functions, the so-called specific dissipation Q-1 as a function of frequency, which is of particularly relevance for geophysical applications