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  3. the two figures below are of a shaft that has...

Question: the two figures below are of a shaft that has...

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The two figures below are of a shaft that has two spur gears on it. The gears have retaining rings that prevent them from sliding off. The gears have end-mill type keyways profile type Find: Analyze this shaft and determine the lowest factor of safety for both fatigue and yielding. Compare Points A, B, and C. Compare to problem 7-2 in text The two gears, labeled as a and b, mesh with other gears (not shown) to generate loads on the shaft. The meshed gears load the shaft in two planes: plane 1 and plane 2. In plane 1 there are two radial loads from the gears: Wn and Wrb. In plane 2, the two tangent loads are Wea and Web, which act in opposite directions. In order to determine the maximum moment as a result of these two planes, find the resultant moment using moment diagrams. The loads for the assignment are: Wra 190 lbf, Wrb 800 lbf, Wta 450 lbf, and Web 1800 lbfshaft diameters: 01-1.0 02-1.4 03 1.625 24-2.0 05-1.625 06-1.4* KEYWAYS, 2 PLACES BOTTOM RADIUS, r=00325 STEP FILLETS r0.16 TYPICAL 1 23 4 RETAINING RINGS, 2 PLACES a # 0.068 r-0.01 Points A B 0 048 7.8 7.5 2.00 0.7 0.8 1.00 1.50 2.00 0.50 0.50 0.50 1.8 4.00 2.2 0.50 10.00 5.8 torque s only between here)

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