6.61 The motor shown in Fig. P6.61 supplies 10 hp at 1,500 rpm at A. The bearings shown permit freerotation of the shafts. (a) Shaft (1) is a solid 0.875-in.-diameter steelshaft. Determine the maximum shear stressproduced in shaft (1). (b) If the shear stress in shaft (2) must be limited to6,000 psi, determine the minimum acceptablediameter for shaft (2) if a solid shaft is used. Fig. P6.61Solution Power transmission:The torque acting in shaft (1) and on gear Bis: ()1550 lb-ft/s10 hp1 hp35.014 lb-ft1,500 rev2 rad1 minmin1 rev60 sBPTTπω⎛⎞⎜⎟⎝⎠====⎛⎞⎛⎞⎜⎟⎜⎟⎝⎠⎝⎠Section properties:The polar moment of inertia for shaft (1) is: 44411(0.875 in.)0.057548 in.3232Jdππ===(a) Maximum shear stress in shaft (1):
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This note was uploaded on 02/09/2012 for the course MECHANICAL EM217 taught by Professor Joyce during the Spring '11 term at Naval Academy.