Calculate diameter of shaft in maximum direct stress, Mechanical Engineering

Calculate diameter of shaft in maximum direct stress:

A shaft is designed for transmitting 100 kW power at 150 rotation per minute. Shaft is supported in bearings 3 m apart and at 1 m from 1 bearing a pulley exerting transverse load of 30 KN on shaft is mounted. Obtain diameter of shaft if maximum direct stress is not to exceed 100 N/mm2.               

Sol.:                                       

Ra + Rb = 30 KN

Ra = 20 KN

Rb = 10 KN

Maximum bending moment occurs at 'C'.

MC  = 20 × 1 = 20 KN-m                                                                                ...(i)

The power transmitted by shaft P = 2  NT/60

100 × 103  =   2  x 150. T/60

T = 6366.19 N-m                                                                                         ...(ii)

Equivalent bending moment Me = ½[M + (M2 + T2)1/2]

= ½[20,000 + (20,0002 + 63692)1/2]

Me  = 20494.38 N-m                                                                                      ...(iii)

1787_Calculate diameter of shaft in maximum direct stress.png

From the bending equation Me/I = σ/y 2044.38 × 103/[ ( ?/64)d4] 100/d/2

d = 127.8 mm 

Posted Date: 10/27/2012 1:38:15 AM | Location : United States







Related Discussions:- Calculate diameter of shaft in maximum direct stress, Assignment Help, Ask Question on Calculate diameter of shaft in maximum direct stress, Get Answer, Expert's Help, Calculate diameter of shaft in maximum direct stress Discussions

Write discussion on Calculate diameter of shaft in maximum direct stress
Your posts are moderated
Related Questions
Ladder friction: .: A ladder is an arrangement which is used for climbing on the walls. It consists of two long uprights of wood or iron and connected by many cross bars. Th

Shaft: What is shaft? What duty is performed by shaft? What is the usual cross section and of what material it is generally made? Sol.: The shafts are generally cylindr


Explain the Base of radial drilling machine The base of the drilling machine handles the entire machine and when bolted to the floor, gives for vibration-free operation and bes

The input-output curve of a 60 MW power station is provided by : I = 10 6 [8 + 8L + 0.4L 2 ] Kcl/hour where I is the input in the Kcal/hour and L is the load in MW. (a) Ev

APPLICATIONS OF CO 2 WELDING CO 2 welding is extremely useful for joining thin sheets of thickness range 1.0 to 2.0 mm because it is possible to keep the heat input low to av


Cobalt-base super alloys (e.g. UNS R30155 (Grade 661) and R30816 (Grade 671)) have superior strength to the nickel base alloys above 1800°F (980°C). The refractory metal alloys

Q. Use of high temperature materials in Furnaces? Often, furnace tubing and refractory protected membrane walls are fabricated from plain carbon steel with a minimum of 0.25% c

Q. Inspection and testing for coating application? The Applicator shall perform all inspection and testing necessary to assure that the surface preparation and coating applicat