shear stress

(redirected from Tangential stress)
Also found in: Dictionary, Encyclopedia.

Related to Tangential stress: Radial stress

shear stress

the force acting in shear flow expressed per unit area; units in the CGS system: dynes/cm².

shear stress

Biophysics
A frictional force tangential to the direction of a flowing fluid, the force of which is directly related to the fluid’s viscosity shear stress. In blood vessels, shear stress acts on endothelium and is the mechanical force responsible for the acute changes in luminal diameter.

Geomedicine
Stress parallel to a given surface (e.g., a fault plane) that results from forces applied parallel to the surface or from remote forces transmitted through surrounding rock.

stress

(stres) [Fr. estresse, narrowness]

1. Any physical, physiological, or psychological force that disturbs equilibrium

2. The consequences of forces that disturb equilibrium.

3. Force applied per unit area. In the physical sciences, stresses include forces that deform or damage materials, such as impact, shear, torsion, compression, and tension. These physical stresses are particularly important in certain branches of health care, e.g., dentistry or orthopedic surgery, and in biotechnology industries, e.g., in the design and use of prostheses, grafts, and perfusion pumps.

Physiological stresses include agents that upset homeostasis, such as infection, injury, disease, internal organ pressures, or psychic strain.

In psychology, stresses include perceptions, emotions, anxieties, and interpersonal, social, or economic events that are considered threatening to one's physical health, personal safety, or well-being. Marital discord; conflicts with others; battle, torture, or abuse; bankruptcy; incarceration; health care crises; and self-doubt are all examples of conditions that increase psychic stresses. The response of an organism or material to stress is known as adaptation. See: adaptation; anxiety; fracture; homeostasis; Laplace, law of; relaxation response

critical incident stress

One's emotional reaction to a catastrophic event such as a mass casualty incident or the death of a patient or coworker. Often such events negatively affect the well-being of health care providers.

oxidative stress

The cellular damage caused by oxygen-derived free radical formation. The three most important are superoxide (O₂^-), hydrogen peroxide (H₂O₂), and hydroxyl ions; these are produced during normal metabolic processes as well as in reaction to cell injury. The extent of their damaging potential can be decreased by antioxidants.

See: antioxidant; free radical; superoxide; superoxide dismutase

prenatal stress

Anxiety, tension, depression, or other psychological discomfort experienced by a pregnant woman.

shear stress

Shear.

shear

1. to remove the fleece of a sheep.

2. pressure on a mass in such a way that planes within it are pressured to move in a direction parallel to the pressure. Any movement is proportional to the distance from the plane at which movement occurs.

shear injury

injury to tissues caused by shear pressure. See shearing injuries (2).

shear stress

the stress to which a tissue is subjected by a shear force without injury actually occurring.

Mentioned in ?

References in periodicals archive ?

Assume that the tangential stress (ryz), which arises in longitudinal section beams, distributed uniformly over its width (by).

Influence of manufacturing quality of laminated core on a turbogenerator exploitation term

When the tangential stress in tension state was selected as the judgment standard of the pressure arch, the typical pressure arch was presented, as shown in Figure 14.

Prediction of Collapse Scope of Deep-Buried Tunnels Using Pressure Arch Theory

This paper deals with the Couette flows of a second grade fluid caused by the bottom plate which applies a tangential stress Equations on the fluid.

SOME COUETTE FLOWS OF A SECOND GRADE FLUID DUE TO TANGENTIAL STRESSES

In the two testing procedures, which are mentioned above (Figure 7 and 8), with evaluation of peak shearing strength parameters, obtained vertical and tangential stress difference at the peak shearing stress is 10%.

Direct shear tests with evaluation of variable shearing area/Tiesioginio kirpimo bandymai ivertinant kintama kerpamaji plota

Analysis of publications revealed that different normal and tangential stress diagrams for principle stress calculations are used by the most of authors (Fig.

Calculation model for steel fibre reinforced concrete punching zones of bridge superstructure and foundation slabs/ Tiltu gelzbetoniniu perdangu ir pamatu ploksciu praspaudimo zonos dispersinio armavimo skaiciavimo modelis/ Caurspiesanas bides pretestibas aprekina modelis tiltu laiduma un pamatu platnu konstrukcijam no fibrubetona/Terasfiibriga armeeritud ...

T] = calculated tangential stress in flange, in MPa(Psi), = [YM.

Design integration for nonstandard flanges for pressure vessels

The method is based on a least squares minimisation of the component of tangential stress perpendicular to the slickenslide (Fig.

Estimation of the local stress field using seismological data

It provides algorithms that track sharp liquid interfaces through arbitrary deformations and apply the correct normal and tangential stress boundary conditions, an accuracy feature that distinguishes it from other CFD programs.

Simulation speeds design of microfluidic medical devices. (Data Management & Analysis)

In particular, this package provides algorithms that track sharp liquid interfaces through arbitrary deformations, applying the correct normal and tangential stress boundary conditions--an accuracy feature that distinguishes it from other CFD programs.

Process modeling solves die design problems, saves more than $100,000. (Case History)

It also provides algorithms that track sharp liquid interfaces through arbitrary deformations and apply the correct normal and tangential stress boundary conditions, an accuracy feature that distinguishes it from other CFD programs.

A Drop in Time

Also, the glass portion is quite tolerant of tangential stress.

Pharmaceutical Company's Sight Glass Failure Leads To Improved Safety and Long-Term Savings

Essentially, it eliminates a complicated, tangential stress dynamic on the hinge pin and barrel assembly that is characteristic of other actions.