Examples of shear stress in the following topics:
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- A fluid is a substance that continually deforms (flows) under an applied shear stress.
- A fluid is a substance that continually deforms (flows) under an applied shear stress.
- These properties are typically a function of their inability to support a shear stress in static equilibrium.
- Solids can be subjected to shear stresses, and normal stresses—both compressive and tensile.
- Real fluids display viscosity and so are capable of being subjected to low levels of shear stress.
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- Mathematically, viscosity is a proportionality constant relating an applied shear stress to the resulting shear velocity and is given, along with a representative diagram, (see ).
- As shown, when a force is applied to a fluid, creating a shear stress, the fluid will undergo a certain displacement.
- Different fluids exhibit different viscous behavior yet, in this analysis, only Newtonian fluids (fluids with constant velocity independent of applied shear stress) will be considered.
- The variation in velocity between adjacent parallel layers is due to the viscosity of the fluid and resulting shear forces.
- A proportionality constant relating an applied shear stress to the resulting shear velocity.
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- The ratio of force to area $\frac{F}{A}$ is called stress and the ratio of change in length to length $\frac{\Delta L}{L}$ is called the strain.
- Deformations come in several types: changes in length (tension and compression), sideways shear (stress), and changes in volume.
- The ratio of force to area $\frac{F}{A}$ is called stress and the ratio of change in length to length $\frac{\Delta L}{L}$ is called the strain.
- Stress and strain are related to each other by a constant called Young's Modulus or the elastic modulus which varies depending on the material.
- Using Young's Modulus the relation between stress and strain is given by: $\text{stress} = Y\cdot\text{strain}$.
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- Both air pressure differences between the upwind and the lee side of a wave crest, as well as friction on the water surface by the wind (making the water to go into the shear stress), contribute to the growth of the waves.
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- Fracture strength, also known as breaking strength, is the stress at which a specimen fails via fracture.
- This is usually determined for a given specimen by a tensile test, which charts the stress-strain curve .
- Rather they generally fracture due to sideways impact or bending, resulting in the bone shearing or snapping.
- The bones in different parts of the body serve different structural functions and are prone to different stresses.
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- There are two different kinds of sound waves: compression waves and shear waves.
- Compression waves can travel through any media, but shear waves can only travel through solids.
- The speed of a compression wave is determined by the media's compression capacity, shear modulus, and density, while the speed of the shear wave is only determined by the shear modulus and density.
- The shear modulus is a measurement of the elasticity or rigidity of a material.
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- An air wedge is one of the simplest designs of shearing interferometers used to visualize the disturbance of the wave front after propagation through a test object.
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- Thermal stress is created when a change in size or volume is constrained due to a change in temperature.
- Thermal stress is created by thermal expansion or contraction.
- Thermal stress can be destructive, such as when expanding gasoline ruptures a tank.
- Forces and pressures created by thermal stress can be quite large.
- Another example of thermal stress is found in the mouth.
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- Normal plasma behaves like a Newtonian fluid at rates of shear.