Calculate the length of plastic deformation, Mechanical Engineering

Assignment Help:

Calculate the length of plastic deformation:

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

Solution

In this case (referring to Eq. (1)) q = 45o.

So that q/2= 22.5, 3q/2 = 67.5o  and cos  q/2=0.924, sin q /2 = 0.383, cos 3q /2 = 0.383, sin 3q/2 = 0.924 .

113_Calculate the length of plastic deformation.png

113_Calculate the length of plastic deformation.png

The condition of plasticity istmax  = tY =  sY /2

918_Calculate the length of plastic deformation2.png

∴          r/a1 =[0.22(s/sY]2 = [0.22´0.6325]2

or, r = 0.0194 a1 or 1.94% of crack length.

Compare that under a stress which is 63.25% of yield stress the plastic zone extends 10% of crack length in the direction of crack length but 1.94% of crack length at 45o.


Related Discussions:- Calculate the length of plastic deformation

Thermodynamic process - thermodynamics, Thermodynamic process - Thermodynam...

Thermodynamic process - Thermodynamics: Thermodynamic system undergoes changes because of the energy and mass interactions. Thermodynamic state of system changes because of th

Explain degree of freedom - jig and fixture, Explain Degree of Freedom - Ji...

Explain Degree of Freedom - Jig and Fixture The complete location of components inside a jig or fixtures can be understood with the help of figure. The work piece is a

Determine the magnitude and nature of the stresses, Determine the magnitude...

Determine the magnitude and nature of the stresses: A thin spherical hollow steel shell of 400 mm diameter & 5 mm thickness is immersed into a liquid container pressurized to

#mechanics of materials, What is maximum shear stress in mechanics of mater...

What is maximum shear stress in mechanics of materials ? Derivation for maximum and minimum shear stress seperately.

Taking care of occupational safety, Taking Care of Occupational Safety ...

Taking Care of Occupational Safety The most important development in occupational safety and health has been the introduction of legislative measures adopted by various gover

Heat transfer, an elctric current is passed through a wire 1mm in diameter ...

an elctric current is passed through a wire 1mm in diameter and 10mm long. the wire is submerged in liquid water at atmospheric pressure and current is increased until the water bo

Scheduling and sequencing, Scheduling and Sequencing: This unit begin ...

Scheduling and Sequencing: This unit begin with the basic concept and the role of scheduling in industry. Several job- sequencing rules to address the manufacturing process ar

What are the special considerations in planning, What are the Special Consi...

What are the Special Considerations in Planning The dimensions of the foundation should be such that for low-speed machines (operating speed less than 500  rpm) the natural fre

Determine airy stress functions, Determine whether the following functions ...

Determine whether the following functions can be used as Airy stress functions, if so what kind of stress states they present    a) ? = 20y 3        b) ? = 3y 2 +4x 3 y c

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