Try "Offset Modelling" for trunion & check the difference in Caeser
package.
"mechengr1977" <mechengr1977@yahoo.com> on 11/21/2002 06:09:32 PM
Please respond to PipingDesign@yahoogroups.com
To: PipingDesign@yahoogroups.com
cc:
Subject: [PipingDesign] Re: pump nozzle loads
try Caesar II USer Manual and their excellent Training Manual. or
use a double strong pump base - amazing what a lil changes in the
pump skid does to the nozzle load.
- In PipingDesign@y..., Geoff Stone DD&D Australia
<blenrayaust@y...> wrote:
> Hi Shivakumar,
>
> I would suggest that you may need to re arrange the piping in your
model.
>
> Another common problem in modelling such nozzles is if you make
them absolutely
> rigid then enomoius loads and moments will arise. If you put the
smallest of
> "gaps" in the restraint the nozzle will behave as it would in
practice and
> accomodate a small amount of strain say .010". You may find that
the loading is
> more realistic.
>
> Try running the model without this restraint and check the strain.
WEokr out
> what leg of the piping is causing the problem and modify the route
or support
> it differently by the use of spring hangars etc.
>
> Geoff Stone
> --- shivakumar angadi <shivku_2000@y...> wrote:
>
> <HR>
> <html><body>
>
>
> <tt>
> Dear friends,<BR>
> <BR>
> I'm doing analysis for piping where pump is getting<BR>
> connected at one end. I have fixed the pump nozzle as<BR>
> fixed point. Since there was a huge value for moment<BR>
> 'Mx', I have introduced one Ry, rotational restraint.<BR>
> Now all the moment has been transferred to this<BR>
> restraint. It is not possible to design the support<BR>
> for such a huge moment. Please advise any other method<BR>
> to reduce these moments.<BR>
> <BR>
> Thanks<BR>
> <BR>
> shivakumar<BR>
> <BR>
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Received on Thu Nov 21 22:48:00 2002