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A question about electric displacement intensity factor of interacting cracks in piezoelectric materials

Submitted by Zhi Yan on
research

I am working on the problem of interacting cracks in piezoelectric materials. Due to the interaction of cracks, I found a non-intuitive phenomenon that the electric displacement intensity factor of the crack for some interacting profiles may be negative under some loading conditions (a tensile stress and an applied electric displacement). However, under the same loading conditions, the electric displacement intensity factor can never be negative for a single crack problem.

Call for Abstracts: SES2008 at the University of Illinois

Submitted by Harley T. Johnson on
conference

Abstracts are now being accepted for the 2008 Society of Engineering Science Annual Technical Meeting, to be held October 12th-15th, 2008 at the University of Illinois at Urbana-Champaign.  The conference will feature more than 30 technical symposia in Applied Mathematics, Bioengineering, Dynamics, Fluid Mechanics, Imaging, Multiscale and Nanomechanics of Solids, Mechanics of Materials, etc., as well as special symposia in honor of the 2008 SES Medalists, listed at the conference website: http://ses2008.mechse.uiuc.edu .

Vibration of a thermally stressed palte with various boundary conditions

Submitted by rammohan10 on
research
Structural Dynamics and Aeroelasticity

Hi Friends,

I would like to have any suggestions or any comments related to a particular problem... There is a thin square cantilevered plate with temperature applied as boundary conditions along 10% of its edges. I would like to extract the first 5 natural frequencies and mode shapes for this problem. The issue is that I am not able to pick the right element (shell) from ANSYS to solve this problem.

Update

Submitted by Ajit R. Jadhav on
update

I have quite a few things to tell...

My PhD defence at the University of Pune is already over.

I have also received post-doc offers, one from a group at MIT Boston, as well as another one from the University of California, Berkeley. The two offers followed within hours of each other. The jobs are in the computational sciences/engineering areas; the people were impressed by what I did in my PhD as well as my iMechanica writings.

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