Re: Re: plane stress/plane strain thickness (Question added)

You are creating a 2-D model. If the dimension out of the plane of the 
figure isn't the
same everywhere then you have to go to 3-D.

 From your description it isn't clear what dimensions are in-plane and what 
are out
of plane. If by length you mean the out-of plane dimension then you could 
probably
look separately at a section with resin and one without. Understanding that 
you will need
to go to a 3d model to study the transition region.

In any case for plane stress/strain that thickness must be the same everywhere.


At 09:28 AM 10/31/04, you wrote:



>Hi george,
>
>Ok, i am not sure if i got you right, pls correct me if i am wrong.
>In my case i am modelling a steel rod embedded in concrete and along
>half the length of the steel rod is a coating of resin. The steel
>rod is 25mm dia. , the resin annulus is 32mm (radial thickness of
>3.5mm : 3.5 X 2= 7mm + 25mm = 32mm)and the concrete is 300mm in
>diameter.
>The length of the rod is 2200mm, resin 800mm and the concrete is
>1724mm.
>
>So instead of specifying plane stress/strain thickness = 1, is it
>better if i specify for the
>steel plane stress/strain thickness = 0.025
>resin plane stress/strain thickness = 0.032
>concrete plane stress/strain thickness = 0.3
>
>Thanking you in advance for your time,
>
>best regards,
>Ravi.
>--- In ABAQUS@xxxxxxxxxxxxxxx, george jefferson
><george.jefferson@xxxx> wrote:
> > When using plane stress/strain your loads and reaction forces are
>all "per
> > unit thickness",
> > so you usually set it to 1 and supply/report forces as "per unit
>thickness"
> > If you know a specific dimension for the out of plane thickness
>then you
> > can supply it
> > and your forces become true or total force.
> >
> > Notice that if you have only displacement boundary conditions and
>don't request
> > reaction forces then the thickness doesn't enter the calculation.
> >
> >
> >
> >
> >
> >
> > >Good point. Then what's the exact meaning for the "plane
>stress/strain
> > >thickness=1"?
>
>
>
>
>
>
>
>
>
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