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

Show the coating application, Q. Show the Coating Application? Immediat...

Q. Show the Coating Application? Immediately following surface preparation, the cleaned pipe shall be uniformly preheated by a non-contaminating method to the application tempe

Explain the procedure of rockwell hardness tests, Q. Explain the procedure ...

Q. Explain the procedure of Rockwell hardness tests? Rockwell hardness tests per ASTM of the deposited weld, and heat affected zone shall be required for procedure qualificatio

Structural notches-metallurgical defects, Structural notches In t he ca...

Structural notches In t he case of solid solution strengthened alloys and age hardenabled steel, the variation in heat i/o during welding may cause localized grain coarsening o

Calculate the reactive power and current supplied, Question: A series r...

Question: A series resistive inductive load is energised from a 240V (RMS), 50Hz single phase AC supply, such that the load draws 1200W at a power factor of 0.8. a) Calculat

Moments, what is resultant of coplanar non concurrent forces

what is resultant of coplanar non concurrent forces

Two UVL loads on a beam, Hi there. I am stuck on a problem. I am working ...

Hi there. I am stuck on a problem. I am working out the section of 2 beams for the floor of an elevator. Thus far the critical conditions are made up of a beam that is 1.8m long

Fricion, what force will be neccesary to just maintain a body at equilibriu...

what force will be neccesary to just maintain a body at equilibrium in a body weighing 914.5kg along the horizontal plane

First law of thermodynamics, First law of thermodynamics: The First La...

First law of thermodynamics: The First Law of Thermodynamics states that work and heat are equally convertible. The present tendency is to include all the forms of energy. The

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