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Relation Between Et(tangent Modules) & Es(secant Modules) in non linear elastic plastic theory?

Submitted by asit_rathod1 on

dear all

            is there any formaula or any theory by i can make a relation for the tangent and secent modules in the plastic region of the stress strain curve?....and also how to find Et and Es for the Alloy steel?.. if any body knows any thing than let me know soon..

warm regards

Asit Rathod

asit_rathod1 [at] yahoo.com (asit_rathod1[at]yahoo[dot]com)

Prestigious 5 year Fellowship -- RAEng/EPSRC Research Fellowships

Submitted by Stephane Bordas on

To all outstanding researchers with less than 3 years of post-doctoral experience, this is a unique opportunity to secure a 5 year post-doc.

This will be highly competitive, and applicants must be of world-class quality. 

Topics available in our group:

- multiscale (fracture) mechanics

- microstructurally-faithful modelling

- surgical simulation

- coupled moving boundary problems 

- meshfree methods 

- quantum simulations

For more details, please see below, and contact me at

Postdoctoral Associate position available at MIT

Submitted by Markus J. Buehler on

A postdoctoral associate position at MIT is available immediately, in the broad area of atomistic, molecular and multi-scale modeling of hierarchical biological, bioinspired and nanostructured materials. Material properties of specific interest include mechanical properties, in particular deformation and failure mechanisms. The work will emphasize on mutable properties (mechanomutability, thermomutability) and the analysis and design of adaptive, responsive, and robust materials through the integration of scales, from nano to macro. 



Interface elements versus continuum elements

Submitted by Gouse on

Hi,

I am modeling interface, its thickness is around 100 micron, I am modeling this problem in ABAQUS, my doubt is, can I use continuum elements like plane stress or plane strain to model this interface with conventional materail models available in ABAQUS or do I have to use interface elements with cohesive zone models. My main doubt is why should I use interface elements, whether plane or solid elements cannot handle interface, please can any body educate on this topic.

THank you

Regadrs

Gouse

Anybody knows a molecular dynamics software for Windows operative systems?

Submitted by marco.paggi on

 

Dear All,

I am looking for a freeware molecular dynamics software working for Windows operative systems.

I have tried LAMMPS, but it seems to me that it works only under UNIX. 

Thank you very much in advance for any information.

Best wishes, Marco Paggi 

_____________________________________

Dr. Ing. Marco Paggi, Ph.D.

Assistant Professor of Structural Mechanics

Alexander von Humboldt Research Fellow 2010-2011

Member of the Executive Board of the Italian Group of Fracture 2009-2011

Postdoc position at HKUST on computational mechanics/geomechanics

Submitted by Jidong Zhao on

A post-doc position is available now for one who has recently obtained (or about to get) his/her PhD on computational
geomechanics or computational mechanics. The successful candidate is expected to have strong background of mechanics
and extensive experience on computer programming (e.g., coding in FEM and/or DEM), and is able to work independently.
He/she who has previously worked on multi-scale modeling of material behavior will be particularly welcome to apply. The
initial contract is one year and is extendable to multiple years subject to his/her performance and availability of funding.