Posted by: katsina
Pipe stress analysis - 04/13/13 03:51 AM
I am using CASAR II to determine the stress analysis of a 33km pipeline from one flowstation to another.
The design parameter are: Design pressure 100bar, operating pressure 70bar, design temp 60 deg., operating temp 35 deg, API 5L X52 Pipe, Nominal pipe size 6", sch. 120,.
I want to know how to use Caesar II in modelling from piping to pipeline.i.e from the flowstation to the undergound pipeline.
Posted by: Richard Ay
Re: Pipe stress analysis - 04/13/13 10:52 AM
There is a "buried pipe" example in the Applications Guide. Review this first.
Posted by: Anuj_gupta1116
Re: Pipe stress analysis - 04/17/13 10:53 PM
Dear all Good Mornning,
I have doubt on Displacment input.
In my case my starting node 10 is butt weld to tank nozzle. So in model i put anchor on that give connecting node "11" on that, then put the displacment value at connecting node 11. But When i run it in restraint Summary Only forces value is showing , Moments is all ZERO.
Why moments not showing in Report. Kindly tell me.
Anuj Gupta
Piping Stress Engineer
------------------------
It's A Wonderfull Day
Posted by: danb
Re: Pipe stress analysis - 04/18/13 02:08 PM
You need to specify also rotational displacements even these are 0, otherwise cnode 11 is free to rotate.
Posted by: Anuj_gupta1116
Re: Pipe stress analysis - 04/18/13 10:06 PM
Dear dan
Good Morning
Yes you are right, Yersterday i solved this problem.
Thanks for this guidance.
Posted by: Richard Ay
Re: Pipe stress analysis - 04/19/13 08:06 AM
Be careful with specifying displacements. A blank field means that DOF is free. A zero means that DOF is fixed with a displacement of zero magnitude.
Posted by: Anuj_gupta1116
Re: Pipe stress analysis - 04/21/13 10:49 PM
Dear all,
Good Morning
Kindly tell me some basic fundamental of analysis, like if our axial laod is greater then allowable loads so we can use taflon pad (mu-0.1). So
what's the other fundamentals for Longitudanal & Circumferential Forces & Moments.
Have a great day
Posted by: MoverZ
Re: Pipe stress analysis - 04/22/13 02:26 AM
Anuj,
Since you sign yourself as a 'piping stress engineer', you should be answering these questions yourself.
Posted by: Anuj_gupta1116
Re: Pipe stress analysis - 04/22/13 09:44 PM
Good morning
Yeah sure i will find it.
But have you pdf of L C Peng. Currently i am reading
Sam Kannappan's Introduction to "PIPING STRESS ANALYSIS".If you have LC PENG's Book for stress analysis Kindly send me at my
Email;- anujgupta1116@gmail.com
Posted by: Richard Ay
Re: Pipe stress analysis - 04/23/13 09:50 PM
You should buy this book, it is a copy-righted work. You want to get paid for your work right?
Posted by: Anuj_gupta1116
Re: Pipe stress analysis - 09/02/13 05:18 AM
Dear Sir,
Kindly Give me Exact answer of " Why we can not check Stress in Operating Condition?"
as i know to check this we use Appendix P option but i want to know What is the reason behind that caesar cant perform stress checking in operating condition.
Posted by: SJ
Re: Pipe stress analysis - 09/02/13 06:23 AM
Go through the code.I suppose you're using B31.3. See for yourself are there any allowable or equations for operating stresses??
You'll get your answer. Also, your interpretation about App P need to be revisited. May be you can ask your seniors for more guidance.
Posted by: Richard Ay
Re: Pipe stress analysis - 09/04/13 09:32 PM
Read this
earlier thread, which is a "sticky topic" at the top of the Forum.