HW#1.pdf - Homework#1 1.1 The figure below shows(1 an unnotched bar and(2 a notched bar of the same minimum cross section Both bars are machine from

HW#1.pdf - Homework#1 1.1 The figure below shows(1 an...

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Homework #1 1.1 The figure below shows (1) an unnotched bar and (2) a notched bar of the same minimum cross section. Both bars are machine from AISI 1050 normalized steel. For each bar, estimate (a) the value of static tensile load P causing fracture and (b) the value of a fluctuating axial load from 0 to P that would be just on the verge of producing eventual fatigue fracture (in about 1 to 5 million cycles). Reflect on the effect of the notch. 1.2 Gears 3 and 4 are attached with keys to the shaft shown below. The resultant gear force, P A = 600 lb, acts at an angle of 20º from the y axis. The material for the shaft is AISI 1030 steel, Quenched and Tempered (Q&T) at 1200 ºF (see Table A-21 for properties). The shaft is solid and of constant diameter except where the gears attach. At those locations the shaft has a 1.5x larger diameter than
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  • Winter '08
  • Shollenberger
  • value of static tensile load P

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