Hi

     I am doing seismic analysis of Fluid filled cylindrical steel tanks using FEM. In this analysis I m supposed to find Base Shear and Overturning moment. Steel tank is thin shell and is flexible. For the complete loading of the shell I have its stress field i.e I have Nxx, Nxy, Nyy, Mxx, Mxy, Myy components of the thin shells middle surface. They are per unit length. Using these components how I can find Base Shear and OTM?

      Any reference/suggestion for this study....

Thanks in advance

Srinivas 

Hi all,

I 'm  interested in finding a complete seachable database on carbon/epoxy orthotropic prepreg [properties and values]. Those values are needed to be inputted into my finite element program for my thesis. One of those materials which i'm trying to find is the MR50/LTM25 as well as several others.

Any suggestions would be great

Thanks 

Kind regards,

Ee Lian

How can I run an analysis that starts in Abaqus/Standard and can be continued in Abaqus/Explicit? Does Abaqus automatically take care of data exchange between them or it should be manual. In other words, can I define step1 in a model run by Abaqus/Standard then immediately running step2 under Abaqus/Explicit?



Thanks,

Ahmad Falahatpisheh

PhD student of Mechanical and Aerospace Engineering

Edwards Lifesciences Center for Advanced Cardiovascular Technology

2141 Engineering Hall

University of California, Irvine



 

In the post

 node/9509

Hello all,



Last year when I started implementing interface elements to model material failure, I realized that the formulation is easy except how to generate a mesh with interface elements. I did a googling to search for such a free program. Amazingly, I did not find any although there are many researchers working on the fracture mechanics field.



So, I wrote a small object-oriented C++ program which reads a FE mesh, duplicates nodes and insert interface elements where asked. The program is able to

The Centre for Advanced Materials at the British University in Egypt is organizing an international workshop on Advanced Materials for Wind Turbine Blades. This workshop is partially funded by the European Commission under Eu-Egypt Innivation Fund and comes in collaboration with the International Institute for Multifunctional Materials for  Energy Conversion (IIMEC), Texas A&M, USA.

 Hi everybody, i am Ravikumar doing M. Tech. project on multi scale analysis of composites.

I gave the input as nodal displacements and different material properties for glass and resin. I applied all the normal stresses and shear stresses on the micro scale model which is of hexagonal array  structure. (i.e., one circular fiber at the centre and quarter fibers at the four corners of the model and the remaining portion is filled up by resin).

Hi there,

 Has anyone ever used a vumat subroutine with Eulerian elements? it seems that the stress update formulation is different from the way it is in Lagrangian approach! If you have any experience in this regard I'd highly appreciate if you share it with me.

 thanks

Nature Communications 1, Article number:144 | DOI:10.1038/ncomms1149

Although deformation processes in submicron-sized metallic crystals are
well documented, the direct observation of deformation mechanisms in
crystals with dimensions below the sub-10-nm range is currently lacking.
Here, through in situ high-resolution transmission electron
microscopy (HRTEM) observations, we show that (1) in sharp contrast to
what happens in bulk materials, in which plasticity is mediated by
dislocation emission from Frank-Read sources and multiplication, partial
dislocations emitted from free surfaces dominate the deformation of