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 357
omes inclinedand takes the posi-tion (oi bi) (themovement being,of course, very much exaggerated in the diagram). Hence aa-^ represents theextension or stretch of the top surface of the beam, and bbj^ thecompression of the bottom surface, due to the behding action. Also, since there is no external… … Fg. 133. RECTANGULAR BEAMS. 3SS But by Hookes law stress is proportional to strain, there-fore the sum of the tensile strains will also equal the sum of thecompressive strains. In the diagram this amounts to a proof thatthe ^ aoai is equal to the A bob^^, hence a«j = bbj^, and the neutralaxis is in…
Naval architecture
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