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
Describe the following key terms: (i) Stream Line (ii) Path Line (iii) Streak Line (iv) Stream Function (v) Potential flow function (vi) Flow net

how to determine proper the depth of cut for the tool if the drill is made of HSS and the work piece is made of alluminume alloy?

what are the functions of a lubricating system

Draw the Free-Body Diagram: A 3 m long boom (Figure) is held by a ball and socket joint at A and by two cables CD and BE. It carries load of 20 kN at B. Draw the Free-Body Dia

Explain Young's Modulus or Modulus of elasticity? Sol. : It is ratio between tensile stress and tensile strain or compressive stress and compressive strain. It can be denote

A smooth sphere of radius 15 cm and weight 2 N is supported in contact with a smooth vertical wall by a string whose length simlar the radius of sphere. The string joins a point on


A 10 kg block slides down a smooth inclined surface as shown in Figure. Show the terminal velocity of the block if the 0.1 mm gap among the block and the surface have SAE30 oil at

INTRODUCTION: Service sector, you shall study about the growth of service sector followed by the growth of automobile industry, two-wheeler industry and Hero Honda Motors Limited

what desaster made chemistry