Shear stress (often denoted by τ, Greek: tau) is the component of stress coplanar with a material cross section. It arises from the shear force, the component...

of stress in liquids started with Newton, who provided a differential formula for friction forces (shear stress) in parallel laminar flow. Stress is defined...

deformation by shear or tensile stresses) of non-Newtonian fluids is dependent on shear rate or shear rate history. Some non-Newtonian fluids with shear-independent...

shear stiffness of a material and is defined as the ratio of shear stress to the shear strain: G   = d e f   τ x y γ x y = F / A Δ x / l = F l A Δ x...

low shear stress. The shear-thinning behavior of plastic fluids can be described with the Herschel-Bulkley model, which adds a threshold shear stress component...

of localized plasticity are called shear bands. Microplasticity is a local phenomenon in metals. It occurs for stress values where the metal is globally...

maximum shear stress or maximum principal shear stress is equal to one-half the difference between the largest and smallest principal stresses, and acts...

stress of the material in pure shear. As shown later in this article, at the onset of yielding, the magnitude of the shear yield stress in pure shear...

differential equation to postulate the relation between the shear strain rate and shear stress for such fluids. An element of a flowing liquid or gas will...

purpose of reinforcing bar (rebar) stirrups is to increase the shear strength. For shear stress τ {\displaystyle \tau } applies τ = σ 1 − σ 3 2 , {\displaystyle...

Shear strength is a term used in soil mechanics to describe the magnitude of the shear stress that a soil can sustain. The shear resistance of soil is...

) of each point on the circle are the magnitudes of the normal stress and shear stress components, respectively, acting on the rotated coordinate system...

resulting shear stress) or a native stress-controlled instrument (control and apply a user-defined shear stress and measure the resulting shear strain)...

significantly with the rate of deformation. Zero viscosity (no resistance to shear stress) is observed only at very low temperatures in superfluids; otherwise...

excess dimensionless shear stress raised to some power. Excess dimensionless shear stress is a nondimensional measure of bed shear stress about the threshold...

by a shear stress in the material. Shear strain is distinguished from volumetric strain. The change in a material's volume in response to stress and change...

stress is 5% double amplitude shear strain. This is a soil test-based definition, usually performed via cyclic triaxial, cyclic direct simple shear,...

cross-section Shear stress may now be calculated using the following equation: τ = q t {\displaystyle \tau ={\frac {q}{t}}} τ {\displaystyle \tau } – the shear stress...

Look up shear in Wiktionary, the free dictionary. Shear may refer to: Animal shearing, the collection of wool from various species Sheep shearing The removal...

end of a pipe is increased this produces a stress on the fluid tending to make it move (called the shear stress) and the volumetric flow rate increases proportionally...

distinct deformations under chewing can be affected by shear rate, shear strain, and shear stress applied through teeth. Based on these, it is helpful to...

does not support shear stress; that is why a fluid at rest has the shape of its containing vessel. A fluid at rest has no shear stress. The assumptions...

relationship between stress and strain in any form of deformation can be regarded as stress–strain curves. The stress and strain can be normal, shear, or a mixture...

Shear velocity, also called friction velocity, is a form by which a shear stress may be re-written in units of velocity. It is useful as a method in fluid...

shear stress and to convert angular velocity to shear rate. We will call the shear stress form factor C1 and the shear rate factor C2. shear stress =...

an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear force applied...

section is rotated from its equilibrium position. The resulting stress (torsional shear stress) is expressed in either the pascal (Pa), an SI unit for newtons...

simple shear stress field is called shear rheometry (or shear rheology). The study of extensional flows is called extensional rheology. Shear flows are...

steels) can fail well below their ultimate material strength. Shear stress is the stress state caused by the combined energy of a pair of opposing forces...

suspensions. A dilatant is a non-Newtonian fluid where the shear viscosity increases with applied shear stress. This behavior is only one type of deviation from...