Specified Minimum Yield Stress for Flexible Pipe.

[AnisaMaski]

Hi everyone.

Im junior engineer and has been assigned to do trawl-pipeline interaction.

My main reference is DNV-RP-F111, and i got stuck how to find plastic moment capacity (mp) which required me to get the value of specified minimum yield stress (SYMS). Since the pipeline is flexible type, I dont have enough data/ source to refer.

Since I have the value for axial stiffness (in tension),(this data usually provided in FEED stage for stiffness of pipeline) i used it to calculate the stress, which stress=Force/cross sectional area, the value will be my basis for the study.

Really appreciate everyone thought/ guidance on this.

Thank you.

 

[LittleInch]

You're probably in the wrong forum - I would try the pipelines one and delete this one.

However flexibles work in a different way to rigid steel pipes and so I think you're in danger of using incorrect data.

Flexibles are, well, flexible, and hence tend to move when subjected to force and loads such as trawl boards.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[AnisaMaski]

Thank you for the suggestion/ reply. I'm still learning how to use the forum.
I'm also not confident with my method, but need to start somewhere at least.

Have a great day.