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implementation of mass matrix and stiffness matrix in abaqus using external subroutine

Submitted by lamia009 on

 

 Hi,

I am working on a coupled fluid structure problem , precisley on the elasto-acoustic mode, and i want to make sure that abaqus work with my matrix (stiffness and mass matrix) that i have made by fortran and at the same time i continu using abaqus element to mesh my model,

Any suggestion would be very appreciated

Thanks in advance

Regards

Lamia

 

"Polymer Nanocomposite Processing, Characterization, and Applications": Special Issue of Journal of Nanomaterials

Submitted by Frank Fisher on

I would like to call your attention to a special Issue on "Polymer Nanocomposite Processing, Characterization, and Applications" scheduled to be published in the Journal of Nanomaterials in May 2010. The Call for Papers can also be viewed at the journal website at http://www.hindawi.com/journals/jnm/si/pnca.htm. The deadline for manuscript submission is November 1.

Change in Elastic Modulus with Plastic Deformation

Submitted by Amit Pandey on

Article on web

http://www.eng-tips.com/faqs.cfm?fid=1441

 

The physical basis of material
properties like Young's modulus can be understood by examining
materials on the atomic scale. There are two main things that influence
the value of the modulus:



1.)     The atomic microstructure

2.)     The interatomic bonds.