viscoelasticity

The Rubber Division, ACS is now accepting online
abstract submissions for the 182nd Technical Meeting being held during the
Rubber Expo at the Duke Energy Center, October 9-11, 2012, in Cincinnati, OH,
USA.  Papers will be judged and awards presented
for Best Paper and Best Paper - Honorable Mention.

Official Call for Papers:
http://rubber.confex.com/rubber/182/cfp.cgi

Abstracts Due: Friday, May 18, 2012

Final Papers Due: Friday, August 31, 2012

Dear Colleague:



You are cordially invited to attend Nanobrücken II:  A Nanomechanical Testing Workshop, jointly presented by INM - Leibniz Institute for New Materials and Hysitron, Inc., with co-sponsorship from the JEOL company. This is the second workshop in the Nanobrücken series. The workshop's scope has been broadened, and the abstract submission deadline is now February 19, 2012.

Viscoelasticity can be studied using Dynamic Mechanical Analysis (DMA) during Nanoindentation. By applying controlled oscillatory stress the resulting strain can easily be measured. An elastic material will have stress and strain in phase while a viscous-elastic material will have strain lagging stress. In many applications during quality control and R&D, it is important to reliably test this behavior.

Several methods have been proposed for numerical homogeniation of linear viscoelastic materials, mainly based on Laplace transform or on multilevel (FE^2) approaches. In this paper, we introduce a much simpler technique based on a discrete representation of the effective relaxation tensor related to the homogeneous medium, which can then be used to evaluate the constitutive law in the form of a convolution product. In practice, calculations on the RVE reduce to 3 transient simulations in 2D and 6  in 3D. More details in

Hi

I am working on the modeling of curing process of polymer

we may like to take a look on my recent publications:

Hossain, M. ; Possart, G. ; Steinmann, P.A Finite Strain Framework for the Simulation of Polymer Curing. Part II. Viscoelasticity and shrinkage .Computational Mechanics, published online

Currently we, Huntsman (Europe) BVBA, are looking for a Research
Scientist Computational Modelling at our Everberg offices close to Brussels,
Belgium.