The discussion revolves around understanding the variables in Roark's formulas for stress and strain, particularly in the context of mechanical engineering applications involving circular plates. Participants seek clarification on specific variables and their meanings within the formulas presented in an old book on the subject.
Participants generally agree that the variables require further clarification and that context is important for understanding their meanings. However, there is no consensus on the specific interpretations of the variables or the formulas themselves, and the discussion remains unresolved regarding the exact definitions and applications.
The discussion highlights limitations in the available information, such as missing assumptions about the specific equations and the need for definitions of constants. The context of the application (pressurizing a cavity between plates) adds complexity to the understanding of the variables.
Mechanical engineers, students studying mechanics of materials, and practitioners using Roark's formulas for stress and strain in practical applications may find this discussion relevant.
It would help to see what section (and edition of the book) you're referring to, but it looks like a flat, circular plate.kieren12345 said:I have an old book on roarks formulas for stress and strain. Which seams to have the formulas I need but it doesn't have explanation of what the variables are. I am a mechanical engineer but have not studied Roarks.
Does anyone know the following?
b/a
ro/a
yb
mrb
ya
mra
Thanks
This is a good point, I meant to bring it up. If you do the calc per Roark, you might consider posting your input, the case used, and the output. It's easy enough for people that use Roark to verify your calculations are correct. I have spreadsheets for many of the circular plates and also access to all the cases on Mathcad.CFDFEAGURU said:... make sure you run some test cases and verify with some hand calcs that the program is producing the correct results.