Elastic deformation is time-indipendent

Click For Summary
SUMMARY

Elastic deformation is characterized as time-independent, meaning it occurs instantaneously upon the application of a load and remains unchanged thereafter. This behavior is distinct from creep, which refers to gradual permanent deformation over extended time periods without an increase in load. The final elastic deformation is directly proportional to the applied load and remains consistent regardless of the rate at which the load is applied, provided the final load remains constant. Understanding these concepts is crucial for materials science, particularly in applications involving aerospace alloys under high stress and temperature conditions.

PREREQUISITES
  • Understanding of elastic deformation principles
  • Knowledge of creep behavior in materials
  • Familiarity with load application and its effects on materials
  • Basic concepts of materials science and engineering
NEXT STEPS
  • Research the mechanics of elastic deformation in materials
  • Study creep behavior in aerospace alloys at elevated temperatures
  • Explore the relationship between load application rates and material deformation
  • Investigate the differences between elastic and plastic deformation
USEFUL FOR

This discussion is beneficial for materials scientists, aerospace engineers, and anyone involved in the study of material behavior under stress and temperature variations.

mech-eng
Messages
825
Reaction score
13
Engineering news on Phys.org
Elastic deformation (which is an idealization of actual behavior) is instantaneous. That is, it occurs immediately upon application of the load and is unchanged thereafter. In that sense, it is independent of time.
 
See "creep."
 
Creep (i.e., permanent or plastic deformation over relatively long time scales) excludes elastic deformation but is one component of how all real materials actually behave.
 
mech-eng said:
Elastic deformation is time-indipendent."

Elastic deformation is proportional to applied load . The final deformation only depends on the final load . Within some practical limits it does not matter how fast or how slow the load is applied - the final deformation will always be the same if the final load is the same . Elastic deformation is therefore time independent .

Creep is gradual continually increasing permanent deformation without increase of the applied load . A common problem with special aerospace alloys working at higher stress levels and higher temperatures .
 
Last edited:

Similar threads

Impact Forces on a Clamped Rectangular Plate
  • · Replies 5 ·
Replies
5
Views
1K
Difference between Elastic Limit & Yield Point
  • · Replies 4 ·
Replies
4
Views
15K
What is a distinct phase change?
  • · Replies 10 ·
Replies
10
Views
3K
Engineering Equilibrium equations of elastic body
  • · Replies 31 ·
2
Replies
31
Views
4K
Question about elastic limit and yield point
  • · Replies 2 ·
Replies
2
Views
3K
Energy needed to deform metal sheets
  • · Replies 6 ·
Replies
6
Views
3K
Material that can be bent repetitively without fatique?
  • · Replies 5 ·
Replies
5
Views
9K
High School How to determine applied force when two objects collide? (basic physics engine)
  • · Replies 9 ·
Replies
9
Views
2K
Engineering How to solve this problem by the method of superposition?
  • · Replies 2 ·
Replies
2
Views
1K
If ultrasound can be used to measure elasticity
  • · Replies 1 ·
Replies
1
Views
3K