24_ch 16 Mechanical Design budynas_SM_ch16

24_ch 16 Mechanical Design budynas_SM_ch16 - the moment of...

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Chapter 16 419 Scaling will affect d o and d i , but the gear ratio changed I . Scale up the flywheel in the Prob. 16-29 solution by a factor of 2.5. Thickness becomes 4(2 . 5) = 10 in. ¯ d = 30(2 . 5) = 75 in d o = 75 + (10 / 2) = 80 in d i = 75 (10 / 2) = 70 in W = 8(386)(11 072) 80 2 + 70 2 = 3026 lbf v = 3026 0 . 26 = 11 638 in 3 V = π 4 l (80 2 70 2 ) = 1178 l l = 11 638 1178 = 9 . 88 in Proportions can be varied. The weight has increased 3026 / 189 . 1 or about 16-fold while
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Unformatted text preview: the moment of inertia I increased 100-fold. The gear train transmits a steady 3 hp. But the motor armature has its inertia magnied 100-fold, and during the punch there are decel-eration stresses in the train. With no motor armature information, we cannot comment. 16-31 This can be the basis for a class discussion....
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This note was uploaded on 12/13/2011 for the course EML 3013 taught by Professor Shingley during the Fall '11 term at UNF.

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