Question

Question 1 Shaft AB is supported at B by a roller support and at A by a pin support as well as a spline that prevents rotation around x axis. The diameter of the shaft is D. At cross section A-A there is a relief groove where the minimum diameter is d. Two loads, F, and one torsion moment, T, are acted on the shaft. The material of the shaft is aluminum 7075, Sy = 495 MPa. Also known: L=630 mm, a-30 mm, D = 21 mm, r = 1 mm, d = 15mm, F = 2452.5 N, T=8000 Nmm Find: ad 1. The critical cross-section and the critical point at that cross section. 2. The safety factor according to Tresca. 3. The safety factor according to von Mises. Figure A-15-13 3.0 Grooved round har in tension 1.02 0.10 0.15 rld 0.05 Figure A-15-14 Grooved round bar in bending a, Mo/I, where e d/2 d-1.50 1.0 0.20 0.30 rid Figure A-15-15 Grooved round bar in torsion. ro Tc/J, where e - d/2 与 11.05 id1.30 し02 1.0 005 0.10 0.15 020 025 0.30 Figure 5-26 7.0 Plate loaded in longitudinal tension with a crack at the edge; for the solid curve there are no constraints to bending: the dashed curve was obtained 6.0 with bending constraints added β4,0 3.0 h/b 0.3 1.0 2.0 1.0 0.4 0.6 0.8 Figure A-15-5 Rectangular filleted bar in tension or simple compression. σ.-F/A, where A-d1 and t is the thickness. Dyd 150 1.10 10s 1.8 1.02 1.0 005 0.15 0.10 0.30 rld Submit this page along with the detailed solution Question 1 The critical point in the cross section: EY Fill in the blanks: Principal stress Equivalent Safety stress factor Nominal True |Stress tensorP MPal [MPa) point stress at the Z-0 Y d/2 tensor σ1,02 [MPal circumference | SCF | stress eq 72 MPa] Tresca: Tresca: Oxaxial 0 re늬二化2294111107-489 5911 Mises |Mises x bending z Von Von 0 489.59 Mises: Mises:

Answer 1

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Answer is varied because SCF values are taken from graph and SCF values are vary person to person. But, if you consider given values for calculations answer is not much different.

See, here

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