Fincham: An Introductory Outline of the Practice of
While the angular form of the parts is preserved, and there is an extension
about the neutral axis, the trusses, with their position will not be brought
into action; but when the stiffness is overcome, and the different parts yield
to the forces impressed, the extremities will have a tendency to drop which
will then be resisted by the abutment of the trusses; for if the parts of the
extremities were only subject to the influence of compression and extension,
and not to drop vertically, it would be difficult to account for the angles
formed by the edges of the quick-work and port timbers being altered so much
in ships that have broken their sheer to a considerable extent.
as a deformation takes place and the resistance of the body is overcome, there
will be a movement amongst the parts,a nd working will take place, and, as the
different forces operate, will be continually increasing and producing
effetcts more and more disasterous to the system.
It is difficult to give to the body of ships sufficient stiffness to overcome
the tendency they have to arching, or sinking at the extremities.
John Fincham: An Introductory Outline of the Practice of
Shipbuilding, etc. etc.
William Woodward, Portsea, 1825 (2nd). 8vo, 15.5x8.5 cm,
xxii, 254 pp, 1 errata page, 5 tables, 9 fold. plates.
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Copyright © 1996 Lars Bruzelius.