نتایج جستجو برای: viscoelastic continuum damage

تعداد نتایج: 281843  

Journal: :International Journal of Solids and Structures 2017

Journal: :Physics in medicine and biology 2012
Oleg Posnansky Jing Guo Sebastian Hirsch Sebastian Papazoglou Jürgen Braun Ingolf Sack

Recent advances in dynamic elastography and biorheology have revealed that the complex shear modulus, G*, of various biological soft tissues obeys a frequency-dependent powerlaw. This viscoelastic powerlaw behavior implies that mechanical properties are communicated in tissue across the continuum of scales from microscopic to macroscopic. For deriving constitutive constants from the dispersion ...

Journal: :Revue Française de Génie Civil 2002

2014
R. Duddu J. N. Bassis H. Waisman

[1] We use a nonlocal viscoelastic damage model to investigate the conditions that enable water-free surface crevasse propagation in grounded marine-terminating glaciers. Our simulations, on idealized rectangular ice slabs in contact with the ocean, show that crevasses propagate faster in thicker ice slabs. We find that: (1) the fraction of ice slab thickness penetrated by surface crevasses dec...

Journal: :International Journal of Solids and Structures 2016

Journal: :ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik 2019

2003
Vincent J. Ervin William W. Miles

In this article we analyse a fully discrete approximation to the time dependent viscoelasticity equations allowing for multicomponent fluid flow. The Oldroyd B constitutive equation is used to model the viscoelastic stress. For the discretization, time derivatives are replaced by backward difference quotients, and the non-linear terms are linearized by lagging appropriate factors. The modeling ...

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