Finding material thickness on cylindrical shells

[iask2learn]

I have been tasked to find the material thickness needed for a cylindrical shell with open ends. I have been given the internal pressure, the cylinder inside diameter, the Poisson's ratio and the allowable tensile strength.

I have used Birnie's equation to solve (see attached file in thread: "Thick-walled cylinder material thickness")

I believe the equation has been solved but would like to know if there is a different way to achieve the same, or different results and be able to compare. I am doubtful that the formula above may be too generic. Any direction on this?

Pls forgive me... I have posted the same issue in thread: Thick-walled cylinder material thickness. I don't mean to break any rules, I just don't know how to post in the correct area. Please help me by either showing me the steps to post correctly in the correct area or by moving this thread for me to where it's supposed to be. Thnx!

 

[nate808]

Thank you for your post. I am a scientist and I would be happy to assist you with your task. First of all, I want to commend you for using Birnie's equation to solve for the material thickness of the cylindrical shell. This is a valid and widely used equation for this purpose.

However, if you are looking for a different approach or equation to compare your results, there are a few other equations that you could consider. One alternative is the Lamé equation, which is commonly used to calculate the stresses in a thick-walled cylinder. This equation takes into account the internal pressure, cylinder inside diameter, and Poisson's ratio, but it also requires the Young's modulus of the material.

Another option is the Barlow's formula, which is commonly used for thin-walled cylinders. This equation is simpler and only requires the internal pressure, cylinder inside diameter, and the material's yield strength.

To determine which equation would be most appropriate for your specific task, I would suggest consulting with your colleagues or a materials engineering handbook. It may also be helpful to consider the intended use and conditions of the cylindrical shell, as this could affect the choice of equation.

I hope this helps and good luck with your task. If you have any further questions or concerns, please do not hesitate to reach out. As for posting in the correct area, I would recommend starting a new thread in the appropriate forum category and including a brief description of your topic in the title. Thank you for your understanding and I wish you all the best in your research.