difference between stress and strain
Answers
Stress is a force acting on a rock per unit area. ... Stress can cause strain, if it is sufficient to overcome the strength of the object that is under stress. Strain is a change in shape or size resulting from applied forces (deformation). Rocks only strain when placed under stress.
1. Stress is a force that can cause a change in a physical body. It is the tension that is produced that can cause a body to deform. It is the quantitative measurement of the amount of force that is held within an object. Stress can be measured and is dependent on the applied force within an area. It is the resistance or internal response of an object to an external pressure. Stress can occur even without strain, but strain cannot exist without stress.
2. Strain is the change in shape or form of an object when stress is applied. Under applied forces, a physical body is deformed or altered. This is called strain. It only occurs when stress is present, and it is a concept that has no unit of measure. It is synonymous with the term “deformation” which is what happens when stress is applied. Most objects respond to stress or pressure by changing their forms according to how the pressure or stress is applied to them.
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