What is meant by principal planes?
a plane that is perpendicular to the axis of a lens, mirror, or other optical system and at which rays diverging from a focal point are deviated parallel to the axis or at which rays parallel to the axis are deviated to converge to a focal point.
What do you understand by principal stresses?
principal stresses are the maximum and minimum (extremum) extensional (norma) stresses. in a stress state at a point. The principal directions are the corresponding directions. The. principal directions have no shear stresses associated with them.
What type of stresses act on a principal plane?
Principal stresses are tensile stresses acting on principal planes. The shear stress components all vanish.
What is mean by principal plane principal stress and strain?
• Principal planes are these planes within the material such that. the resultant stresses across them are wholly normal stresses or. planes across which no shearing stresses occur. • Principal stresses are those stresses which are acting on the. principal planes.
What is the difference between principal planes and principal stresses?
Theoretically Principal planes are the planes of NO shear stress and principal stresses are the stresses applied on the body oriented along the principal plane in the normal direction . This is the value of maximum normal stress that the body can experience when its orientation is varied for a given distribution of load .
What is the principal plane of tension?
Principal plane is one in which only normal stresses act and there are no shear stresses. Normal stress simply means stresses perpendicular to the surface on which stress acts (forces are normal to the surface). Thus, by normal stresses, we refer to Tension and Compression.
What are principal stresses and normal stresses?
Principal stresses are maximum and minimum value of normal stresses on a plane (when rotated through an angle) on which there is no shear stress. Principal Plane It is that plane on which the principal stresses act and shear stress is zero.
What do you mean by principal plane?
Principal plane may be defined as. ” The plane on which normal stress attains its maximum and minimum value.”. So these planes are also called as major principal plane and minor principal plane.