In the oval pipe analysis what sort of materials bulge or become oval when subjected to internal pressure?
A. The solution is limited to those isotropic materials that exhibit linear-elastic material properties and that the deflections are small compared to the radius of the cylinder. This essentially limits the solution to metals. Although the aim is to produce a perfectly round cylinder. In practice the cylinder is often out-of-round as a result of: manufacturing tolerances, welding distortion, pipe bending. As internal pressure is applied the out-of-round cylinder tends to become more round. In doing so it induces bending stresses across the wall of the cylinder. • Q. Can the oval pipe analysis be used at pipe bends where the ovality can be high compared to the rest of the pipework system? A. Although “Haigh’s” analysis is strictly for straight pipe I know that it is often applied to pipe bends. You would have to give consideration to combining the results with other factors, e.g. the pipe bend stress intensification factor, in the assessment. • Q. Can the oval pipe analysis be used for
Related Questions
- Can the oval pipe analysis be used at pipe bends where the ovality can be high compared to the rest of the pipework system?
- In the oval pipe analysis the stresses are non-linear with pressure, are the material properties also non-linear?
- Can the oval pipe analysis be used for external pressure or vacuum conditions?
