The elasticity and resistance of the materials of engineering (1915)
Burr, William H. (William Hubert), 1851-1934 · New York, John Wiley & Sons, inc.; [etc., etc.] · leaf 215
The twisting of the bar is done by the action of twoequal and opposite couples acting in two planes, each nor-mal to the axis, but at any desired distance apart. Thetwo couples are represented in Fig. i at each end of thepiece in the two normal sections A and B. The forcesand lever-arm of one… … a; > O ^ 2 .go 5 -^ ^ JJ cn ■P3.g r— <1> O X 5 ^ u Si -2 = a -s o Art. 37.) TORSION IN EQUILIBRIUM. 183 will be Pe and that of the second couple P^e\ and if pure torsion is to be produced these two moments must be equal,but opposite to each other. Inasmuch as the moment of acouple is the…
Strength of materials · Building materials
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