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Comparison of hyperelastic models for rubberlike materials

Submitted by ErwanVerron on
research
elasticity
rubber
constitutive equations

Dear all,

Infinity asked me for posting more information about one of our papers. It was published in 2006 in Rubber Chemistry and Technology and proposes a comparison and a ranking of 20 different hyperelastic constitutive models for rubber (from the Mooney model (1940) to the micro-sphere model (2004)) in the incompressible case.

Marckmann G. et Verron E., Comparison of hyperelastic models for rubberlike materials, Rubber Chemistry and Technology, 79(5), 835-858, 2006.

Unloading prony series (soft tissue)

Submitted by sugeng on
research

Hello All,

 

I am new here. I was searching for long time to find similar topics (see title) but nothing. 

So, it may be good to ask here.

 

My question is:

 Is it correct (for soft tissue) that prony series from relaxation test can be used to model "unloading" part of a cyclic test? If it is yes Why? 

   

I thank you in advance

 

Best regards,

Sugeng

 

MD simulation VS. Continuum mechanical model Of protein

Submitted by kongdong on
research
continuum mechanics
MD
Protein

Hi, all

Molecular dynamics (or MC) is a powerful tool in the protein research. There're lots of scientific works in this field, which deepen our understanding gradually. My question follows, "how about the continuum mechaics in protein research".

Any discussions and advices are appreciated.

 

Kong    5th Sep 2007



 

Brittle fracture down to femto-Joules — and below

Submitted by Markus J. Buehler on
research
brittle fracture
experiment
nanoscale

I found an interesting paper on the arXiv website that may interest some mechanicians.  Markus

Title:  Brittle fracture down to femto-Joules — and below

Authors: J. Astrom, P.C.F. Di Stefano, F. Probst, L. Stodolsky, J. Timonen 

Non-planar crack growth (X-FEM and fast marching)

Submitted by N. Sukumar on
research
fracture mechanics
X-FEM
fast marching
non-planar cracks

In the attached manuscript, we have coupled the extended finite element method (X-FEM) to the fast marching method (FMM) for non-planar crack growth simuations. Unlike the level set method, the FMM is ideally-suited to advance a monotonically growing front. The FMM is a single-pass algorithm (no iterations) without any time-step restrictions. The perturbation crack solutions due to Gao and Rice (IJF, 1987) and Lai, Movchan and Rodin (IJF, 2002) are used for the purpose of comparisons.

Stretching and polarizing a dielectric gel immersed in a solvent

Submitted by Xuanhe Zhao on
research
suo group research
dielectric
electromechanical instability
gel

      This paper studies a gel formed by a network of cross-linked polymers and a species of mobile molecules. The gel is taken to be a dielectric, in which both the polymers and the mobile molecules are nonionic. We formulate a theory of the gel in contact with a solvent made of the mobile molecules, and subject to electromechanical loads. A free-energy function is constructed for an ideal dielectric gel, including contributions from stretching the network, mixing the polymers and the small molecules, and polarizing the gel.

interface cohesive energy

Submitted by Henry Tan on
research
interface

Many people here are interested in the behaviours of interfaces.

I am interested in having a list of the cohesive energy for interfaces between different materials, such as polymer/ceramics, polymer/metals, polymer/polymer, metals/ceramics, biological interfaces, carbon nanotube/polymer matrix, etc.

So, what is the magnitude of the cohesive energy per unit area of the interface you are studying?

 

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