Elastic recovery-can you just check if i've got it right

  • Thread starter Thread starter maha
  • Start date Start date
  • Tags Tags
    Elastic
Click For Summary
SUMMARY

The discussion centers on calculating the elastic recovery of a wire with a diameter of 0.46 mm and a length of 100 mm, subjected to a tensile force of 2356 N. The modulus of elasticity is 67 GPa, and the yield strength is 698 MPa. The correct calculation for elastic recovery, based on the elastic range, results in an elastic recovery of 1.04 mm. The tensile force and tensile load are not used in this calculation as they pertain to the plastic deformation region beyond the elastic limit.

PREREQUISITES
  • Understanding of tensile strength and yield strength in materials science
  • Knowledge of modulus of elasticity and its application in elastic deformation
  • Familiarity with strain calculations and their significance in material behavior
  • Basic principles of elastic and plastic deformation in materials
NEXT STEPS
  • Research the relationship between yield strength and tensile strength in materials
  • Learn about the implications of plastic deformation on material properties
  • Explore advanced calculations involving stress-strain curves
  • Study the effects of different materials on elastic recovery and deformation
USEFUL FOR

Students in material science, particularly those studying dental technology, as well as engineers and professionals involved in material testing and analysis.

maha
Messages
14
Reaction score
0
Hiya
Im doing material science as part of my dental technology course. I've got a question, and I'm fidning it hard to tackle.If anyone can help or set me in the right direction, i would be most grateful

Wire, of diameter 0.46 mm, length 100mm.it is subjected to tensile force of 2356 N, taking it beyond its yield point.
Calculate, in mm, the elastic recovery that would occur upon removal of the tensile load

Info given: Modulas of elasticity 67 GPa
Yield Strength 698 MPa
Tensile Strength 1379 MPa



okies, i think i got it. so, to calculate elastic recovery, i can only use the elastic range, so in order to work out elastic strain, i use yield strength/modulas of elasticiy. that gives me an answer of 1.041791045 N
Then, strain = extension/original, so to work out extension, i caluclate, strain x original length, which gives me 1.041791045 x 10-3 m
So answer is 1.04 mm of elastic recovery?

So then , i do not need to calulate the cross-sectional area or the stress value?

Can somebody just check this for me please :)
 
Physics news on Phys.org
Didn't we have this discussion already? :smile:

Answer: Yes, it's correct!.
 
yes, but i wasnt sure if i was right that's why i posted it back up. How come the inforamtion of information of the tensile force and tensile load is not used. Is this because they are related to plastic part of the graph?

Thank you for your help :) hope i get the 4 marks
 
Because the elastic recovery will only be upto the Elastic limit, if it goes after such limit, there will be permanent deformations on the material, like i said on your other thread.
 

Similar threads

Calculate Elastic Recovery: Dental Technology Course
  • · Replies 20 ·
Replies
20
Views
31K