Metric and Imperial Units

The above formulas may be used with both imperial and metric units. As with all calculations care must be taken to keep consistent units throughout with examples of units which should be adopted listed below:

Notation

• ∆r = change in radius, in or mm
• E = modulus of elasticity, psi or MPa
• P = pressure under consideration, psi or MPa
• P_c = clamping pressure (between two surfaces), psi or MPa
• r = radius to point of of interest, in or mm
• t = wall thickness, in or mm

1. A.R. Ghasemi, A. Kazemian, M. Moradi. Analytical and Numerical Investigation of FGM Pressure Vessel Reinforced by Laminated Composite Materials. Kashan, Iran. 2013. Publised in "Journal of Solid Mechanics".
2. Popov. (2018, June 16). Chapter 3: Generalized Hooke’s Law, Pressure Vessels, and Thick-Walled Cylinders. Engineering Mechanics of Solids [PowerPoint file]. Slide Share. Retrieved from https://www.slideshare.net/Monark108/chapter-3-generalized-hookes-law-pressure-vessels-and-thickwalled-cylinders
3. R. Yarrapragada, R.K. Mohan, B.V. Kiran. Composite Pressure Vessels. Andhra Pradesh, India. 2012. Publised in "Internationa Journal of Research in Engineering and Technology".