In CANDU™ (Canadian Deuterium Uranium) Reactors, the joint between the Calandria tubes to the Calandria tubesheets is achieved by roller expanded joints. This paper models a detailed account of the Calandria tube joint fabrication and deformation. Numerical simulation illustrates the mechanisms of bending and compression that cause the plastic deformation in the joint. Results show that the insert deformation must pinch the Calandria tube both axially and radially at groove edges to create leak tightness. Predicted rolling forces have been used to quantify the elastic deformation in the rollers and mandrel, and the final tool setting is seen to account for this springback as well as springback in the joint components.
- Pressure Vessels and Piping Division
Anatomy of the Calandria Tube Rolled Joint
- Views Icon Views
- Share Icon Share
- Search Site
Metzger, D, Araujo, E, & Brown, D. "Anatomy of the Calandria Tube Rolled Joint." Proceedings of the ASME 2007 Pressure Vessels and Piping Conference. Volume 2: Computer Applications/Technology and Bolted Joints. San Antonio, Texas, USA. July 22–26, 2007. pp. 83-94. ASME. https://doi.org/10.1115/PVP2007-26744
Download citation file: