What is multiaxial fatigue loading?
Multiaxial fatigue is a general term that may be used to describe loading and/or loading plus geometry conditions resulting in complex states of stresses and strains, either locally or globally.
What is a stress state?
General Stress State The general state of stress at a point is characterized by three independent normal stress components and three independent shear stress components, and is represented by the stress tensor. The combination of the state of stress for every point in the domain is called the stress field.
What is stress biaxiality?
[bī′ak·sē·əl ‚stress] (mechanics) The condition in which there are three mutually perpendicular principal stresses; two act in the same plane and one is zero.
What is 2d stress?
5.5 General two-dimensional stress system A two-dimensional stress system is one in which the stresses at any point in a body act in the same plane. Consider a thin rectangular block of material, abcd, two faces of which are parallel to the xy-plane, Figure 5.4.
What are combined stresses?
Any state of stress that cannot be represented by a single component of stress; i.e., one that is more complicated than simple tension, compression, or shear.
What is Polyaxial stress?
The polyaxial stress field with a high stress ratio and/or an oblique orientation to fracture sets can result in strongly heterogeneous distributions of stresses, shear displacements and fracture apertures.
How do you define state of stress at a point?
State of stress at a point : By state of stress at a point, we mean an information which is required at that point such that it remains under equilibrium. or simply a general state of stress at a point involves all the normal stress components, together with all the shear stress components as shown in earlier figures.
What are the three dimensions of stress?
We begin by considering the three-dimensional infinitesimal element in Cartesian coordinates with dimensions dx, dy, and dz. Normal stresses are perpendicular to the faces of the elements given by σx, σy, and σz.
What is minimum combined stress?
Minimum Combined Stress: The linear combination of the Direct Stress and the Minimum Bending Stress. Maximum Combined Stress: The linear combination of the Direct Stress and the Maximum Bending Stress.