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+--- Thread: 45 degree connections (/thread-207.html)
45 degree connections - peipei - 22-12-2011
Dear Mr./Mrs.
I have two questions about connections.
We are now busy with a project which has a lot of 45 degree reinforced connections. After reading the document of “T-stukken in PLE-micro-CAD” rev.7 d.d.1-11-2002, it is possible to do it for the configuration.
But according to the explanation, in the T-module it is combined with Stress intensification factor (SIF) of in and out-plane
In the Tee
However, without T-module we have to input the SXUB1 factor in table CSWEIGH. From what I understand is that
• If PHI-MB is 90 or 270 degree, then Mbi=0, MBEN=Mbo. In this case SXUB1=SIX-OP
• If PHI-MB is 180 or 360 degree, then Mbo=0, MBEN=Mbi. In this case SXUB1=SIX-IP
Question 1:
If PHI-MB is not the case above, how could I combine SIX-OP and SIX-IP to SXUB1?
Question 2:
What is the Stress intensification factor for 45 degree?
RE: 45 degree connections - Bas - 10-05-2016
Is the PLE document “T-stukken in PLE-micro-CAD” still available?
RE: 45 degree connections - Bas - 10-05-2016
Thanks Shaswin!
RE: 45 degree connections - shaswin - 02-09-2025
@Bas: There is an updated version document for modelling tees in Ple4Win: rev. 11 dated 01-08-2015. See attachment in this message.
For Y-pieces a workaround can be done like this, I think:
SXUB1=i_combined=SQRT((i_inplane*COS(PHI_MB))^2+(i_outplane*SIN(PHI_MB))^2). The i_inplane and i_outplane are from a normal tee (90 degrees) calculation.
Is it possible to implement this weighing factor by default in Ple4Win when there are branching connects in the system with an T-angle which is not 90 degrees?
I think then that the weakened parts of the pipe at the connects are taken correctly into account in the stress calculations.
Also the hole in the connect which can be oval (depends on the connecting angle) should be taken into account in the ovalisation and redistribution calculation.