A Treatise On Friction And Lost Work in Machinery And Millwork
A Treatise On Friction And Lost Work in Machinery And Millwork
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9 Lieut. Metcalfe, of the Ordnance Corps, U. S. A. , in experi- ments made at the Frankford Arsenal* in 1873, on axle and trunnion friction, has adopted . Rankine's method f of noting the time required by a fly-wheel running loosely on a shaft to lose a given quantity of energy while stopping under the opposing efforts of its own inertia and the frictional resistance of its lubricated bearing on the stationary axle. From this he deduced the coefficient of friction thus: The energy thus destroye...d is * Ordnance Notes No. LXXXIV. Washington, July 15, 1878. F Machinery and Millwork, p. 397.
EXPERIMENTS ON FRICTION TESTING-MACHINES. (W\ in which M is the mass ^ J of the wheel, k its radius of gyra- o tion, and a is the initial angular velocity.
The work of resistance by friction is U = U, and is meas- ured by and . U = 2Fnrn = - a 2 471 rn y in which F is the effort of friction resisting motion, r the radius of the shaft or journal, and n the total number of revolutions made while stopping.
What to read after A Treatise On Friction And Lost Work in Machinery And Millwork?
You can find similar books in the "Read Also" column, or choose other free books by Robert Henry Thurston to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
9 Lieut. Metcalfe, of the Ordnance Corps, U. S. A. , in experi- ments made at the Frankford Arsenal* in 1873, on axle and trunnion friction, has adopted . Rankine's method f of noting the time required by a fly-wheel running loosely on a shaft to lose a given quantity of energy while stopping under the opposing efforts of its own inertia and the frictional resistance of its lubricated bearing on the stationary axle. From this he deduced the coefficient of friction thus: The energy thus destroye...d is * Ordnance Notes No. LXXXIV. Washington, July 15, 1878. F Machinery and Millwork, p. 397.
EXPERIMENTS ON FRICTION TESTING-MACHINES. (W\ in which M is the mass ^ J of the wheel, k its radius of gyra- o tion, and a is the initial angular velocity.
The work of resistance by friction is U = U, and is meas- ured by and . U = 2Fnrn = - a 2 471 rn y in which F is the effort of friction resisting motion, r the radius of the shaft or journal, and n the total number of revolutions made while stopping.
What to read after A Treatise On Friction And Lost Work in Machinery And Millwork?
You can find similar books in the "Read Also" column, or choose other free books by Robert Henry Thurston to read onlineMoreLess
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