Mechanical and marine engineering science ... Specially written as a handbook to the Board of Trade examinations for extra-first-class engineers (1909)
Somerscales, A. N · Glasgow : J. Munro; London, Simpkin, Marshall, Hamilton, Kent · leaf 120
cond cause of vibration—centrifugal forcein the shaft itself—it is necessary to distinguish carefully between astatic balance and a dynamic balance. A very simple experimentwill make this clear. Let usturn up a wood spindle and mount itbetween V centres upon a board, as in figure 30. Next bore… … Fig- 3° We have now a crude model of a two-throw crank shaft, with-cranks at 180 degs., and the model is balanced statically, as thereal shaft would be in the lathe. Now wind a piece of string roundthe spindle and spin it by this means, when it will be found to makethe board vibrate most violently,…
Naval architecture
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