11.45 Determine the first critical speed by the Dunkerley and Rayleigh methods for the steel shaft shown in sketch i. Ne

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11 45 Determine The First Critical Speed By The Dunkerley And Rayleigh Methods For The Steel Shaft Shown In Sketch I Ne 1 (41.13 KiB) Viewed 33 times

11.45 Determine the first critical speed by the Dunkerley and Rayleigh methods for the steel shaft shown in sketch i. Neglect the shaft mass. The area moment of inertia is I = 7r4/4, where r = shaft radius. The method of su- perposition may be used with the following given: P 8 GET (GE"] [ - (x – a)3 br3 7 xb (12 – 62) 2 Ans. NR = 765 rpm, ND = 783 rpm. 50 kg 35 kg 50-mmeliam |--50 mm -1000 mm -750 mm Sketch i, for Problem 11.45