Section modulus and value of bending moment, Mechanical Engineering

Assignment Help:

Q. What do you mean by section modulus (Z)? What is value of bending moment in the terms of section modulus?


Sol.: Section modulus is ratio of M.I. about neutral axis which is divided by the outer most point from the neutral axis.

Z = I/ymax  .

For the Circular Shaft (Z) = I/y = ( ? D4/64)/D/2   =(  D3/32)

For the Hollow Shaft (Z) = I/y = {?  (D4 - d4)/64}/D/2   =( ? /32)( D4  - d4)/D
For the Rectangular section (Z) = I/y = (bd3/12)/d/2 =bd2/6

Section modulus represents strength of the section of the beam.

As; M =  σ .I/y =   .Z

Stress at outer fiber will be highest. That is,

M =   max.(I/ymax) =   max.Z


Related Discussions:- Section modulus and value of bending moment

Determine the radius of curvature - motion of a particle, Determine the rad...

Determine the radius of curvature - motion of a particle: The motion of a particle in XOY plane is defined by the equation r (t ) = 3t i^ + (4t - 3t 2 ) j^ The distanc

Find out the forces in the members of the tower, Find out the forces in the...

Find out the forces in the members of the tower: Find out the forces in the members of the tower. Solution By symmetry, ∠ AFG = ∠ AGF = θ and HG = 7.5 m; while AH = 3

Speed Limit Governors, Why is porter governor more sensitive than Watt Gove...

Why is porter governor more sensitive than Watt Governor even the former has got an additional weight which will require more force to move sleeve than Watt governor?

Thermal, diference between thermal and thermodynamic equallibrim

diference between thermal and thermodynamic equallibrim

First law of thermodynamics, common formula for first law of thermodynamics...

common formula for first law of thermodynamics #Minimum 100 words accepted#

Calculate the length of plastic deformation, Calculate the length of plasti...

Calculate the length of plastic deformation: Calculate the length of plastic deformation along 45 o in case the applied stress σ is 63.25% of yield stress in the plate of abo

Evaluate maximum inclination that can climb - car, Evaluate maximum inclina...

Evaluate maximum inclination that can climb: Q: A four wheel drive can as shown in the figure has mass of 2000Kg with the passengers. The roadway is inclined at the angle wit

#title.THERMODYNAMICS., what are the limitations of first law of thermodyna...

what are the limitations of first law of thermodynamics?

Wire-frame entities-representing ellipse and parabolas, wire-frame entities...

wire-frame entities-representing ellipse and parabolas

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd