[Getdp] LinearElasticity2D-how to apply a force field?
geuzaine at acm.caltech.edu
Tue Oct 26 09:48:53 CEST 2004
Gianmario Pellegrino wrote:
> Dear Christophe,
> first of all congratulations for you very good job and many thanks for
> sharing it.
> We're trying to evaluate (my colleague is in copy) the centrifugal
> stress and deformation of a rotating lamination, but we can't figure out
> how to express the forcing term as a function of x and y.
> Except for that, the LinearElasticity2d example fits very well.
> The centrifugal force per volume is expressed by:
> f = Vector (k*x , k*y, 0)
> We tried to declare this term as a function, using both $X,$Y and simply
> F[Slab] = Vector[k*$X, k*$Y, 0 ]
Right... I almost forgot about this.
Currently, you should use the "current values" $X, $Y and $Z only in
pre-processing constraints, and use the functions X, Y and Z in
the formulations, i.e.:
F[Slab] = Vector[k*X, k*Y, 0]
(We definitely need to clarify the documentation about current values;
or actually fix the code ;-))
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org
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