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strain evaluation in relaxed nanowires

Submitted by Yongfeng Zhang on

Due to the existence of surface stress, the interior of a free standing nanowire is in non-zero stress state especially near free surface (see attached). This stress state corresponds to strain field in nanowires. A reference configuration would then be necessary to define the strain. Any good suggestions on the selection of the reference configuration?

Finite element modelling fracture mechanics of polymer/clay nanocomposites

Submitted by CeciliaPisano on

I am Cecilia. In 2007 I graduated in mechanical engineering at the University of Cagliari (Sardinia, Italy).

During the degree courses I took several classes on structural mechanics, including, Mechanics of Composite Materials,

Fracture Mechanics, Finite Element Analysis (with Ansys and Abaqus).

Now I am a PHD student at the Univesity of Cagliari and this is the aim of my research:

Finite element modelling of polymer-clays nanocomposites with

Division of Fluid Dynamics 62nd Annual Meeting November 22nd - 24th, 2009, Minneapolis, Minnesota

Submitted by Suman Muppidi on

Conference website:  http://dfd2009.umn.edu/

The 62nd Annual Meeting of the American Physical Society's Division of Fluid Dynamics (DFD) will be held in Minneapolis, Minnesota from November 22nd to 24th, 2009. The meeting is hosted by the University of Minnesota, and will be held at the Minneapolis Convention Center in downtown Minneapolis.

material modeling on 3D braided fibre reinforced composites when subjected to impact loading

Submitted by konanur on

Hi dear members

I am a student doing my Masters in Automotive Engineering at RWTH Aachen and am interested in Structural mechanics. I have done a basic course on mechanics of composite materials and am decently conversant with mechanics of composite laminae. However I am asked to do this mini project where in I am asked to search for a Material model on LS Dyna which is suitable for simulating the crash loading on a 3D braided carbon FRP. 

Thermal Stress Analysis

Submitted by Gopi Lingam on
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Hi Everyone,

 I am new to Abaqus. I am working on a research topic where in I need to study the transient thermal stresses, strains arised due to heating a body by thermal radiation.  From the user's manual I understood that I need to use "Sequentially coupled thermal-stress analysis" for my model.