Learning Forum

[harshanagasai668]

Hello,
I am facing a challenge in modeling an axisymmetric model of COPV. The cylindrical section of COPV is relateively easy but when it comes to the model COPV as a whole, i cannot incorporate the change in winding angle in an axisymmetric model. Any kind of help or suggestion is appreciated. In the image , i can plot the thickness via points and get it..but incorporating  the change in winding angle is a bit challenging task

[Kaushal Vadnere]

Hi,

I suggest you to perform the analysis on full 3D model of the COPV instead of axisymmetric if you want to take in account the changing winding angle.
See if this knowledge material on setting up variable winding on COPV helps: How can I setup variable winding (fiber) angles on a COPV (composite overwrap pressure vessel using ACP and tables capabiliity? The fiber angle changes in the dome region and I need to account for the changing angle. - Ansys Knowledge.

Thanks! 

[harshanagasai668]

Dear Sir,
Firstly thank you very much for stepping forward as a helping hand. Comparing the results of an Axisymmetric model, a shell model and a 3D solid model is a part of my project, which is why i am determined to model an accurate Axisymmetric model of a COPV. It will help for my analysis if i could model an axisymmetric model. Coming to the 3D solid model, I modelled it with the help of a Lookup table and cut off section rule. I am sure that there might be a mistake in my 3D modelling process as the failure index exceeded the treshold value by a lot and i am in my way to correct the path i took up on.