Introduction of a curve fitting tool to identify material constants of viscoelastic material models
In this article, we are introducing a new analysis tool to identify material constants of viscoelastic problems.
viscoelasticity
2 post doc positions in Italy --- Regulating adhesion using viscoelastic oscillating contact --- some solutions
We are hiring 2 post-docs soon in Italy at the Department of Mechanics DMMM of the Politecnico di BARI. The subject is here described.
apparent paradox: for a sliding flat punch on a viscoelastic halfspace, friction is zero or not?
dear Imechanica friends
here is an apparent paradox: for a sliding flat punch on a viscoelastic halfspace, friction is zero or not? Certainly there seems to be viscoelastic dissipation, but the pressure is also normal to dispacements, so am I missing something obvious here? Any help is welcome!
Thanks
Mike
Buckling of viscoelastic spherical shells
By Tianzhen Liu, Yuzhen Chen, John W. Hutchinson, Lihua Jin
Viscoelasticity and Dynamic Mechanical Analysis
Viscoelasticity is the property of a material that exhibits some combination of both elastic or spring-like and viscous or flow-like behavior.
Improved Muller approximate solution of the pull-off of a sphere from a viscoelastic substrate
M. Ciavarella (2021) Improved Muller approximate solution of the pull-off of a sphere from a viscoelastic substrate, Journal of Adhesion Science and Technology, DOI: 10.1080/01694243.2021.1882766
See also in attach the PDF.
VUMAT viscoelasticity (Maxwell model)
Dear all,
I would like to ask you for advice. I am about to simulate a pull-through test (see attached picture) of a cladding panel made of a material with highly viscoelastic behaviour. I have parameters for Maxwell model (Prony series) obtained from test. I expect large deformation and probably cone failure (or tearing of the cladding panel). Therefore I would like to use Abaqus/Explicit. The problem is that I cannot use *visco step together with Explicit. Is there any way to solve it?
Journal Club for March 2020: Molecular Simulation-Guided and Physics-Informed Multiscale Modeling of Polymer Viscoelasticity
Journal Club for March 2020: Molecular Simulation-Guided and Physics-Informed Multiscale Modeling of Polymer Viscoelasticity
Ying Li, Department of Mechanical Engineering, University of Connecticut
1. Introduction
Postdoc position in Mechanics of Advanced 3D-printed Materials and Structures at Technion - Israel Institute of Technology
A postdoctoral position is available as early as Fall 2019 at the Faculty of Aerospace Engineering, Technion - Israel Institute of Technology.
Candidates holding a Ph.D. in Mechanical Engineering, Aerospace Engineering, Civil Engineering, or related field with a strong interest in mechanics of 3D-printable polymer composites and architectured materials are encouraged to apply.
Viscoelastic material modeling
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Hello,
I have a question regarding viscoelastic materials and property definitions through prony series.
If i am not wrong ,the values wi and τi of the series can be expressed either in terms of time domain or frequency domain.
Having the prony series expressed at time domain, how can the relaxation tensor be expressed? Do i still need to perform
Laplace-Carson transformation, of the time dependent relaxation and creep functions or their prony series expression is enough,
so i can get the full relaxation tensor (isotropic case) as: