Hello all,
I have a problem in my Hanger design.
The Hangers are not taking the load variation and getting suppressed or moving in the deflected direction. or you can say ,not working.
In the Analysis reports for Hangers, it shows zero load variation..
Is there a problem in my Hangers setting..??
What is the solution for this..??
Thank you in advance

A stab in the dark, but do you have hanger loads (e.g. T1+P1+W1+H) applied to all operating cases?

No. In the analysis it sshows (HGR)CASE NOT ACTIVE in grey colour.

How to make it active..??

Maybe You don't write all necessary infromation like:
- for which condition You like to select (cold load or Hot load)
- the vendor of spring hanger
- available load variation

Of course You must have all parameters like temp and pressure.

If You have all this information please choose a Run error checker
You nned to receive information that You have a spring hanger in system and how many is undesign.

After this choose Edit Static load cases
In window from left side You have loads defined input !!!
If You have a H - Hanger loads it is ok.

Please choose a recommended load cases and after this You should have active a possibility a load case to choose a spring hanger

Jacky,

Those HGR cases are supposed to be "not active". They are preliminary analyses used to calculate required hanger sizing data. The results for those cases are not suited to work with the final support configuration.

Hi Adrian82,
I had already done all the inputs and error check which you said. it was showing properly. but my problem was in the analysis part when i check for the deflections my hangers were also deflecting with the pipes and were not taking the load from the pipe.
I thought probably its not working.
Then I checked it the other way, the loads were reduced but was still more for springs, thats why it was deflecting. this is what i think. I don't know is it correct or not..Please let me know..

Thanks.

Thanks Dave,
Got it.

Dear sirs ,

Since those HGR cases are supposed to be "not active" and they are preliminary analyses used to calculate required hanger sizing data.
However , have you ever seen that there be sometimes abnormal and huge restraint loads (along lateral or axial direction) shown on the cases W if the output status changed to "keep" ?

The reason the HGR load cases are set to "not active" is because they don't represent the final piping system, and the results can be misleading if this fact isn't recognized.

As to your "abnormal huge restraint loads", to understand this do the following:

1) Copy the job to a new "test" job - say "Hgr_Test".
2) Bring up the piping input and change each hanger location to a full "Y" restraint.
3) Run a single load case with just "W".
4) The results for the restraint loads at the (former) hanger locations should match the (former) "not active" load case of the original job.

5) If the restraint loads don't match, then you have a non-linear job where the hanger design is iterating for convergence, most likely eliminating "+Y" restraints that lift off. You should be able to determine this in the original job where the restraint load at your "+Y" locations is reported as zero in the (former) "not active" load case.

Dear Richard,

Thanks for your kindly reply.
It has been seen that if there is any gap existing in guide or axial support, then it might see the abnormal restraint loads shown on case HGR_W if it is active.
Does it mean this issue also resulted from the iterating for convergence in case HGR_W ?

Thanks

Most likely "yes". You should be able to see the final state of the non-linear restraints if you activate that first HGR case (the restrained weight case). This should reveal the final state of the iterations.

If you still have trouble resolving this, open the Support Request on Smart Support.

Dear Richard,

Thanks for your reply and it is more clear about this issue now.