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This document describes the series of experiments and associated calculations performed as the Compas preliminary ring test exercise. A number of mild steel rings, representative of sections through HLW containers, some notched and pre-cracked, were tested in compression right up to and beyond their ultimate load. The Compas project partners independently modelled the behaviour of these rings using their finite element codes. Four different ring types were tested, and each test was repeated three times. The fourth ring, which was not modelled by the partners, had a 4mm thick layer of weld metal deposited on its surface. The three tests on this ring did not give identical results and suggested that the effect of welding methods should be addressed at a later stage of the project. Fracture was not found to be a significant cause of ring failure. The results of the ring tests were compared with the partners' predictions, and additionally some time was spent assessing where the use of the codes could be improved. This exercise showed that the partners' codes have the ability to produce results within acceptable limits. Most codes were unable to model stable crack growth. There were indications that some codes would not be able to cope with a significantly more complex three-dimensional analysis.

Additional information

Authors: OVE ARUP AND PARTNERS, Ove Arup and Partners, London (GB)
Bibliographic Reference: EUR 12401 EN (1989) 32 pp., FS, ECU 5
Availability: (2)
Record Number: 199010122 / Last updated on: 1994-12-01
Original language: en
Available languages: en
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