explain stress strain and curve
Answers
Answer:
Stress Strain Curve
✍ It is the graphical representation of stress versus strain .
\Large \text{Explaination\: For\: Stress\: Strain\: Curve }Explaination For Stress Strain Curve
✍ Explaination For Stress - Strain Curve refer the above Attached File .
✍ when the stress is zero strain is also zero .
✍ When the stress is gradually increased, strain also increases linearly up to a certain point (A) called proportional limit.
✍ Therefore, in the region OA Hool's law is obeyed with in this region the body regains its original state on removal of stress .
✍ Beyond A , the strain increases rapidly upto B. The region AB the strain is permanent on removal of stress .
✍ Then the wire is said to be acquired 'permanent set' . Therefore, in the region AB hooks law is not obeyed .
✍ Beyond B the material exhibits elastic behaviour. i.e in the region BC the material continues to elongate even for small increase in stress . Therefore in the region BC Hooke's law is not obeyed .
✍ If the material is wire, beyond C the wire elongates even if the longitudinal stress is not applied. Finally the wire breaks at the point D called breaking point of the wire
Answer:
Stress: When we try to deform anybody by applying any force, due to an elasticity of a reaction force is created in the body. This reaction force tries to regain the body's previous shape against the applied external force. This reaction force per unit area is known as stress.
Strain: Due to the effect of externally applied force, there is relative displacement between the various parts of the body. Thus the body changes its shape or volume. This deformation is known as strain.
Stress strain curve is a behavior of material when it is subjected to load.