Difference between elastic and plastic deformation, Other Engineering

Q. State difference between elastic and plastic deformation.

Ans. Elastic deformation: Elastic deformation is that the part of the deformed material, when the applied load is removed, would spring to its normal shape. The elastic deformation takes place of low stress and having following characteristic:

(a)   Reversible

(b)  Usually very small

(c)   Obeys the hook's law i.e. stress is proportional to strain

Plastic deformation: In the plastic deformation, the material will not obeys the hook's law. This deformatio9n is set generally 40% melting temperature of that material and depends on applied load, rate of strain; temperature etc. during the plastic deformation, the metal follows the following relation i.e.

 

                                                    P=k e η

 

                  Where p=stresses; k=strength coefficient; η=power factor

          Elastic Deformation

            Plastic Deformation

1.       It is first stage of deformation.

It is second stage of deformation i.e. after the elastic deformation.

2.       It disappears after the removal of load.     

Not disappear even the load is removed.

3.       It is temporary.

It is permanent.

 

4.       It is reversible.

It is irreversible.

5.       Elastic deformation is practically small and produced strain in the order of 0.5% only.

Plastic deformation is high and the strain produced is also quite high.

6.        Stress-strain relationship is given by a constant.

There is no such well defined constant in plastic deformation.

7.        After this next stage is plastic deformation.

After this next stage is plastic fracture.

Posted Date: 8/1/2012 9:04:04 AM | Location : United States







Related Discussions:- Difference between elastic and plastic deformation, Assignment Help, Ask Question on Difference between elastic and plastic deformation, Get Answer, Expert's Help, Difference between elastic and plastic deformation Discussions

Write discussion on Difference between elastic and plastic deformation
Your posts are moderated
Related Questions
what do you mean by diffraction of light? what is the diffrence between interference and diffraction of light?distinuish between Fresnel''s and Fraunhofer''s diffraction.

Hi, i want to get a quote for my communication networks assignment

Method of calculating the thrust forces: The thrust forces or gas loads can be calculated for the engine, or for any flow section of the engine, provided that the areas, pressu

Evacuation of a high rise building - means of escape: Evacuation of a high rise building is likely to be split into two or more phases.  Initially, when the alarm activates (f

how would you judge the potential profits of Bajaj electronics on the first year of sales to booth plastics and give your views to increase the profit?

What''s the principles of surveying?

Explain the meaning of numbering and addressing in ISDN network.

Installing Aircraft Parts: Prior to fit remove the label from the engine and attach it to the paperwork for safekeeping. Check the engine over to ensure it is complete and chec

Noise reduction The problem of engine noise has always been associated with aircraft. Increases in engine power have given rise to increases in noise and the indications are t

A half skeleton pattern for a hollow pipe is shown. Since the pipe is symmetrical about the pouring line, the same pattern will serve the purpose of moulding both the halves in two