From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Analysis of stress tests on a link, comparing twisting and bending forces as the cause of fractures.
Identifier | ExFiles\Box 78\2\ scan0070 | |
Date | 7th June 1912 guessed | |
-4- In observing these tests I noticed that although the method of making the two tests is widely different, yet the resulting stress in the link is very similar in the two cases. In the first case (twisting test) each arm of the link is bent as a cantilever in opposite directions and each link is also twisted about its own axis. In the second case (bending test) each arm of the link is bent as a cantilever in the same direction but not twisted on its own axis. I do not think the arms of the link would ever break from the above mentioned twisting component alone, and I think these fractures show that it is the bending which takes place owing to either a seized bush or the rolling of the car acting on the link when it is not quite vertical, but this | ||