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Maxwell stress of a dielectric elastomer subjected to electric field

Submitted by Lianhua Ma on

 

Hello everyone,

As reported in some references, Maxwell stress of a dielectric  elastomer subjected to electric field can be determined by the following formula

P=e*E^2    (1) -------e=e0*e1, e0 is the dielectric permittivity of vacuum, e1 is the relative dielectric permittivity of the elastomer, and E is the applied electric field.

Fracture of Rubber. Lecture 2

Submitted by Zhigang Suo on

Fracture mechanics without invoking any field theory. In Lecture 1 on Fracture of Rubber, we considered the extension of a crack in an elastic body subject to a load. Following Rivlin and Thomas (1953), we regarded the elastic energy stored in the body as a function of two independent variables: the displacement of the load, and the area of the crack. The partial derivative of the elastic energy with respect to the area of the crack defined the energy release rate.

Generate softening curve

Submitted by ss09 on

Hello,

 

I seek help from the forum regarding the following. Because I am very new to mechanics.

I have a continuum damage mechanics model with me. I have set up a problem of a typical three point bending test on a notched beam. The notch in the center of the specimen and extends from the bottom face up to the middle of the thickness. It is a plane stress problem. Now I want to simulate load-displacement curve obtained from the experiment (s).

Postdoctoral Positions in the Post-Graduate School at the Otto-von-Guericke-University Magdeburg, Germany

Submitted by knaumenko on

A number of 3 year research schoolarships and PhD positions in the areas of mechanical engineering, process engineering and applied mathematics is available in the Post-Graduate School "Micro-Macro-Interactions in Structured Media and Particle Systems", Otto-von-Guericke-University Magdeburg, Germany.

Further information can be found at  http://www.uni-magdeburg.de/gkmm/free-position-new-gk.htm

Marine Current Turbine

Submitted by Joao Machado on

Hi,

 

I'm doing some investigation on a marine current turbine, for a project using the Lifting Line Theory. 

I found out some problems regarding some assumptions one has to make when projecting a turbine, such as cavitation number, tip speed ratio, Reynolds number, etc...

Any information of any bibliography you might have might became handy, so I appreciate if you share it.

 

Thank You!

Joao

Need an example of wave propagation in a plate using abaqus

Submitted by Hadishah on

Hi every body,I'm a senior student in mechanics and really I need an
example of wave propagation in a thin plate to conduct my project. At
now,main problem for me is how to apply load to get answers with
obvious wave propagtion contour plot without any thing more in just one
refelection.

Thanks in advance,

Hadishah

How is this possible in ABAQUS?

Submitted by Ahmad Falahatpisheh on

I am trying to run UHYPER in ABAQUS 6.9EF1. I have the following questions:



1) How can I get the nodes
ID associated
with element# NOEL in UHYPER subroutine?



2) How can I get the
coordinates of the displaced nodes associated with element# NOEL in UHYPER
subroutine in the middle of the simulation? I tried to use GETVRN but it seems it does not work in
UHYPER.



Postdoctoral Positions in Computational Solid Mechanics at Los Alamos National Laboratory

Submitted by Hashem Mourad on

The Fluid Dynamics and Solid Mechanics group at Los Alamos National Laboratory is currently seeking candidates for two post-doctoral positions in the areas of theoretical and computational solid mechanics.

Further information and application instructions can be found at http://www.hr.lanl.gov/JobListing/SingleJobAd.aspx?JobNumber=218796

IMECE 2010 Student Travel Awards and Best Papers Contest

Submitted by H Jerry Qi on

The AMD executive committee (EC) just announced the student travel awards and best paper contest for IMECE 2010. Between 10 and 15 students will be selected for travel grants of $750 each. The students who receive travel awards will also become eligible to participate in the best paper contest. This is a great opportunity for young students to present their work and meet other researchers during IMECE 2010.