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thermodynamics

How is the entropy of polarization in dielectric material

Submitted by Bo Li on

In the study of thermoelastic actuation of dielectric elastomer, we can write the Helmholtz free-energy as a function of stretch ratio, nominal electric displacement and temperature (T).

The entropy (S) is the negative partial differential coefficient of W with respect of temperature (T). And we can see the change of S is due to three components: deformation, heat conduction and polarization. In an isothermal state, the deformation part has been fully investigated by Arruda and Boyce in 1993, but the polarization-induced entropy (Sp) has not been clearly stated.

Food for Thought: A Few Recent arXiv Papers

Submitted by Ajit R. Jadhav on

Since my research touches on the basics of QM, I have developed this habit of visiting arXiv.org every now and then. Last week or so, at arXiv.org, I found a couple of interesting articles on physics in general. I would like to share these with you.

Looking for a Post-Doc position in Geomechanics, in Europe

Submitted by Adrien Haxaire on

Dear all,

My name is Adrien Haxaire. I am currently Associate Professor at LGCIE, INSA Lyon, France, until end of August. I am looking for a
Post-Doc position in geomechanics in Europe.

During my PhD, I developped a thermodynamical model capable of describing coupled THMC phenomena in unsaturated porous media. It was implemented in Cast3M. 

I am very interested in chemical reactions in porous media, their modelling and implementation. I am also interested in the field of CO2 sequestration.

INELASTICITY OF MATERIALS - A NEW BOOK

Submitted by Srinivasan Sivakumar on
INELASTICITY OF MATERIALS- An Engineering Approach and a Practical Guide

by 

Arun R Srinivasa (Texas A&M University, USA) &

Sivakumar M Srinivasan (Indian Institute of Technology, Madras, India)

New papers on thermodynamics and mechanics of surfaces

Submitted by Robert C. Cammarata on

Please allow me to note that I have recently published in Philosophical Magazine a paper that presents a general approach to Gibbsian surface thermodynamics that includes a treatment of solid surfaces.  It can be accessed through the following link: 

http://www.informaworld.com/smpp/content~db=all~content=a792987191

potential functional for material exhibts non-associative elastoplastic response

Submitted by WaiChing Sun on

Does anyone knows where I can find any paper discuss the existence of potential functinoal for materials that violate the maximum plastic dissipation principle (due to non-convex yield function and/or non-associately fluw rule)?