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moment load

meysam tatari
Hi Dears
I want to create a moment at a node but when did this, the job analysis aborted due to errors. the Error is:
"1 nodes have inactive dof on which boundary conditions are specified. The nodes have been identified in node set ErrNodeBCInactiveDof."
what can I do?

Regards



     

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Re: moment load

Dave Lindeman
You can only apply a moment to nodes that have rotational
degrees-of-freedom (e.g., the nodes associated with beam or shell
elements, or reference nodes).  You can't apply a moment to the nodes
associated with continuum elements, since the don't have rotation DOFs.
  To apply a moment to continuum element you should use a reference node
and distributed or kinematic coupling.

Regards,
Dave


-------------------------
Dave Lindeman
Lead Research Specialist
3M Company
3M Center 235-3F-08
St. Paul, MN 55144
651-733-6383

On 10/5/2010 1:24 AM, meysam tatari wrote:

>
>
> Hi Dears
> I want to create a moment at a node but when did this, the job analysis
> aborted due to errors. the Error is:
> "1 nodes have inactive dof on which boundary conditions are specified.
> The nodes have been identified in node set ErrNodeBCInactiveDof."
> what can I do?
>
> Regards
>
> [Non-text portions of this message have been removed]
>
>


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Re: moment load

pinpress
Hi Dave,

Can you elaborate on how to apply a moment to continuum elements? Is there an example somewhere in Abaqus manual to do this? Thanks very much as I am facing the same problem and I still haven't found a way to solve it.


Dave Lindeman wrote
You can only apply a moment to nodes that have rotational
degrees-of-freedom (e.g., the nodes associated with beam or shell
elements, or reference nodes).  You can't apply a moment to the nodes
associated with continuum elements, since the don't have rotation DOFs.
  To apply a moment to continuum element you should use a reference node
and distributed or kinematic coupling.

Regards,
Dave


-------------------------
Dave Lindeman
Lead Research Specialist
3M Company
3M Center 235-3F-08
St. Paul, MN 55144
651-733-6383
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Re: moment load

george jefferson-2
one approach is to apply opposing  point forces to a pair of nodes close to
each other. That is equivalent to the method Dave suggested and really a
matter of what you find convenient.



On Sun, Oct 10, 2010 at 5:16 PM, pinpress <[hidden email]> wrote:

>
>
> Hi Dave,
>
> Can you elaborate on how to apply a moment to continuum elements? Is there
> an example somewhere in Abaqus manual to do this? Thanks very much as I am
> facing the same problem and I still haven't found a way to solve it.
>
>
> Dave Lindeman wrote:
> >
> > You can only apply a moment to nodes that have rotational
> > degrees-of-freedom (e.g., the nodes associated with beam or shell
> > elements, or reference nodes). You can't apply a moment to the nodes
> > associated with continuum elements, since the don't have rotation DOFs.
> > To apply a moment to continuum element you should use a reference node
> > and distributed or kinematic coupling.
> >
> > Regards,
> > Dave
> >
> >
> > -------------------------
> > Dave Lindeman
> > Lead Research Specialist
> > 3M Company
> > 3M Center 235-3F-08
> > St. Paul, MN 55144
> > 651-733-6383
> >
> >
>
>  
>


[Non-text portions of this message have been removed]



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