Learning Forum

[Mark134]

Hi all,

Thank you for reading this. I am an undergraduate student , working on a pressurized tube. It has two open ended , but one side is partially capped with the structural component attached to it. Other side is a Venturi tube. The liquid flowing through is heated and have a pressure of 500 Psi. So i want to do a structural analysis on the tube made of steel and with a 3" diameter.

My approach was, added a frictional support on the two ends of the tube with a pressure normal to the tube. Also added a new cylindrical coordinate system to get the hoop stress and the Axial stresses. I am not sure of the supports i used. Please guide me if the process is correct.

Thank you so much.

[1shan]

Some images of the setup would definitely help in visualizing the problem. Is the tube free to expand in the radial direction? If yes you could use a cylindrical support, free the radial degree of freedom and fix the other two (axial and tangential). If there is any constraint on the tube edge that prevents it from expanding then you could simply use a fixed support at the end edges. And yes you could insert a user defined cylindrical system to get the hoop and axial stresses.
Regards Ishan.

[Mark134]

This is the steel tube, it has an internal pressure due to the fluid flowing. My question is, the walls will have the pressure acting normal to the surface. How about on the inlet and outlet faces? Do I get the hoop and axial stresses only by the radial pressure or do I have to add the axial pressure as well?
If so how do I do it and please guide me. Very much appreciated.