In your thermal analysis look at the displacement of
the nozzle. You will no doubt find it is zero in the
analysis depending on what software you use. If you
allow the nozzle to move in the hot condition even a
very small amount you will see a large reduction in
the theoretical loads imposed in the unsustained case.
Even the thermal loads still persist you may need to
consider the use of bellows. Be aware that the bellows
should be tie to prvent translational movement in a
pressure (ie discharge) situation. Speeak to the
bellows suppliers about the stiffness values to be
employed in the modelling of the bellows.
Geoff
It has been observed in Pump nozzle loadings, In
case
of Thermal load analysis, even at ambient temp.
loads
on nozzles comes very very high compare to
sustained
loads. Unimaginably high loads leave analysing
engineer without any solutions. Even system may
not
worth to add any expansion loops nor bellows. Any
suggestions from dear and experienced membsers to
tame
this loads ( forces and moments)within allowable?
Thanks
shivakumar
</tt>
<!-- |**|begin egp html banner|**| -->
<table border=0 cellspacing=0 cellpadding=2>
<tr bgcolor=#FFFFCC>
<td align=center><font size="-1"
color=#003399><b>Yahoo! Groups Sponsor</b></font></td>
</tr>
<tr bgcolor=#FFFFFF>
<td align=center width=470><table border=0
cellpadding=0 cellspacing=0><tr><td align=center><font
face=arial size=-2>ADVERTISEMENT</font><a
href="<a href="http://rd.yahoo.com/M=194081.1566666.3122752.1261774/D=egroupweb/S=1705083319:HM/A=766942/R=0/*http://www.ediets.com/start.cfm?code=3225">http://rd.yahoo.com/M=194081.1566666.3122752.1261774/D=egroupweb/S=1705083\
319:HM/A=766942/R=0/*http://www.ediets.com/start.cfm?code=3225</a>"targe
t=_top><img
src="http://us.a1.yimg.com/us.yimg.com/a/ed/ediets/1015_300x250.gif"alt="Click
Here!" width="300" height="250"
border="0"></a></td></tr></table></td>
</tr>
<tr><td><img alt="" width=1 height=1
src="<a href="http://us.adserver.yahoo.com/l?M=194081.1566666.3122752.1261774/D=egroupmail/S=1705083319:HM/A=766942/rand=144482748">http://us.adserver.yahoo.com/l?M=194081.1566666.3122752.1261774/D=egroupmai\
l/S=1705083319:HM/A=766942/rand=144482748</a>"></td></tr>
</table>
<!-- |**|end egp html banner|**| -->
<tt>
mailto:<a href="/group/PipingDesign/post?postID=2tM64-x7uBCdVoYTDrEFrYVXwTbbQ-V6bmvPERKsUGGfIMuasmV-NGZxzONpWEMW01E7dUKogcPBxE0nH-h1pG2t7yAEegb53EKok87qtuvZOys">PipingDesignNews-subscribe@yahoogroups.com</a>
<tt>Your use of Yahoo! Groups is subject to the <a
href="http://docs.yahoo.com/info/terms/">Yahoo! Terms
of Service</a>.</tt>
</br>
This archive was generated by hypermail 2.1.8 : Tue Mar 04 2008 - 11:40:16 EST
