Principal planes and principal stresses, Mechanical Engineering

Assignment Help:

Principal Planes and Principal Stresses:

Define the Principal Planes and Principal Stresses.
Sol.:
When an element in strained body is under action of plane stresses, it is found that there exist 2 mutually perpendicular planes of element on which normal stresses are maximum and minimum and no shear stress is acting on these planes. These planes are called as principal planes.

From the figure given below; the principle planes is determined by
1303_Principal Planes and Principal Stresses.png 
As shear stress on these plane is zero, thus they are also called as shear free plane.

The maximum and minimum principal stresses which are acting on principal planes are called as principal stress.
1255_Principal Planes and Principal Stresses1.png 
The principal stress which is having maximum value is called as "major principal stress" and principal stress having minimum value is called as "minor principal stress".
145_Principal Planes and Principal Stresses2.png 
Where  σx,  σy be direct stresses in  x and y direction and   σxy be the shear stress normal to xy plane.

Resultant stress can be given as follows
1391_Principal Planes and Principal Stresses3.png


Related Discussions:- Principal planes and principal stresses

Arc initiation-touch start-high frequency start, ARC INITIATION Touch...

ARC INITIATION Touch Start With the power supply energised and the shielding gas flowing through the cup, the torch is lowered toward the workpiece until the tungsten electr

Strength of material, how will you apply principle of superposition in a st...

how will you apply principle of superposition in a stepped bar?

Piston leaves the bottom stops , Consider the frictionless piston-cylinder ...

Consider the frictionless piston-cylinder set-up with a linear spring as is shown below. The cylinder has an internal cross-sectional area of AC = 0.1 m2. Distances  y 1 and  y 4

The bronzes-copper alloys, The Bronzes The coinage bronze employed for...

The Bronzes The coinage bronze employed for making coins in earlier days contains 95% copper, 4% Sn and 1 % Zn. The Zn acts as a deoxidizer. Such alloy is soft and ductile.

Thin uniform wire bent - centre of gravity, Thin uniform wire bent - centre...

Thin uniform wire bent - centre of gravity: Find out the C. G. of the thin uniform wire bent into shape ABC as illustrated in Figure. Solution Assume G be the loc

What is auto-ignition temperature, Q. What is Auto-Ignition Temperature? ...

Q. What is Auto-Ignition Temperature? Auto-Ignition Temperature (AIT) - The auto-ignition temperature is the temperature at which a product will burn without application of any

Minimum design metal temperature, Q. Minimum Design Metal Temperature? ...

Q. Minimum Design Metal Temperature? The MDMT and coincident pressure shall be selected in consideration of the operating phases. Reliable administrative procedures to control

Calculate the diameter of the single pipe, a) Three pipes of lengths 800m, ...

a) Three pipes of lengths 800m, 400m, 500m and of diameter 500mm, 400mm and 300mm respectively are connected in series. Pipes are to be removed by a single pipe of length 1700m. Ca

Classification of cast iron, Classification of Cast Iron: CI having C...

Classification of Cast Iron: CI having C in form of cementite is named as white cast iron. Microstructure of that CI consists of pearlite, cementite and ledeburite. Whether C

Name the boolean set operators used in csg, Name The Boolean Set Operators ...

Name The Boolean Set Operators used in CSG The Boolean Set Operators used are : union : A + B is the set of points that are in A or B. intersection : A . B is the s

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