Stress:
Stress is defined as
‘’the force across a boundary per unit area, for all orientations of that boundary.’’
It is derived from force, a physical quantity and area, a geometrical quantity. Therefore, stress is also characterized as a fundamental quantity, like velocity, energy, etc. that can be brought under quantification and can be analyzed without any obvious attention of the physical grounds of the material or of its nature.
Example:
When a solid bar is supporting a load, each constituent of the bar exerts push on the particles below it. When a liquid is in a closed vessel under pressure, each particle of the liquid exerts pressure on other particles. The walls of the container and the surface that is tempting the pressure, exerts push against them in reaction. These forces are actually the remaining result of a wide-ranging number of intermolecular forces and impacts between those molecules.
Representation:
Stress is often notified by a Greek symbol sigma (σ).
When we discuss stress, we have to discuss strain also, as both are related to each other.
Strain:
“Strain is the measure of the deformation of the material due to stress.’’
Strain in a material maybe triggered by various mechanisms, like when stress is induced on the material due to the action of forces to the material, or to its surface like other contact forces. …show more content…
The compulsion of stress by an exterior cause usually creates some strain in the material, no matter how small. In a solid material, such strain will consequently cause an interior elastic stress, similar to the reaction force of a stretched spring, tending to re-establish the material to its non-deformed state. Fluids (liquids, gases and plasmas), according to the definition, can only compete against deformations that would cause their volume to
Stress is defined as
‘’the force across a boundary per unit area, for all orientations of that boundary.’’
It is derived from force, a physical quantity and area, a geometrical quantity. Therefore, stress is also characterized as a fundamental quantity, like velocity, energy, etc. that can be brought under quantification and can be analyzed without any obvious attention of the physical grounds of the material or of its nature.
Example:
When a solid bar is supporting a load, each constituent of the bar exerts push on the particles below it. When a liquid is in a closed vessel under pressure, each particle of the liquid exerts pressure on other particles. The walls of the container and the surface that is tempting the pressure, exerts push against them in reaction. These forces are actually the remaining result of a wide-ranging number of intermolecular forces and impacts between those molecules.
Representation:
Stress is often notified by a Greek symbol sigma (σ).
When we discuss stress, we have to discuss strain also, as both are related to each other.
Strain:
“Strain is the measure of the deformation of the material due to stress.’’
Strain in a material maybe triggered by various mechanisms, like when stress is induced on the material due to the action of forces to the material, or to its surface like other contact forces. …show more content…
The compulsion of stress by an exterior cause usually creates some strain in the material, no matter how small. In a solid material, such strain will consequently cause an interior elastic stress, similar to the reaction force of a stretched spring, tending to re-establish the material to its non-deformed state. Fluids (liquids, gases and plasmas), according to the definition, can only compete against deformations that would cause their volume to