The principle stress is a maximum tension stress in a body where shear stress is zero and it acts on the principle plane. If a body is under both tension and shear then the principle stress is higher than the initial tension stress. You can calculate this and find the principle plane angle using Mohr Circle analysis or equations.
in this stress the force acts parallel to the area on which the stress is measured. microscopically what takes place is that the material is made of several planes and during the shear stress the planes slip over each other like a pack of cards until finally failing.
the leading or lagging between the stress and strain is called hysteresis loop
this region is called the linear elastic region as such it is the linear elastic stress.
is a resisstance of a body is called inertia
Wherever there is stress there is strain. In the example you noted, if heated bar expands freely without one end constained it changes its strain without stress; that strain is called eigenstrain. If the same bar is held rigidly then the eigenstrain resisted and you get stress and strain. So stress cannot exist without strain; but strain can exist without stress if it is eigenstrain.
principle stress=pure normal stress no shear stress ... ...simpler terms, there are only stresses acting in and out of planes not directly on them....hope that helps
GAS principle
moderation
moderation
the GAS principle
The major principal stress is the maximum normal stress occurring in an element, and the minor principal stress is the minimum normal stress in the element. Principal stresses act on the principal planes which are perpendicular to each other. Shear stresses are zero on the principal planes.
The GAS Principle, stands for General Adaptation Syndrome
in this stress the force acts parallel to the area on which the stress is measured. microscopically what takes place is that the material is made of several planes and during the shear stress the planes slip over each other like a pack of cards until finally failing.
The stress that causes strike-slip faults is produced by a shearing force and so is called shear stress.
The Overload Principle
Parallel planes.
he found the principle for the birds lift which benefited people to discover the air planes.