Examples of compressive 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.
- Solids can be subjected to shear stresses, and normal stresses—both compressive and tensile.
- In contrast, ideal fluids can only be subjected to normal, compressive stress (called pressure).
- Real fluids display viscosity and so are capable of being subjected to low levels of shear stress.
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- Deformations come in several types: changes in length (tension and compression), sideways shear (stress), and changes in volume.
- Using Young's Modulus the relation between stress and strain is given by: $\text{stress} = Y\cdot\text{strain}$.
- (b) Compression: The same rod is compressed by forces with the same magnitude in the opposite direction.
- For very small deformations and uniform materials, $\Delta L$ is approximately the same for the same magnitude of tension or compression.
- For larger deformations, the cross-sectional area changes as the rod is compressed or stretched.
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- Arches are a pure compression form.
- They span large areas by resolving forces into compressive stresses and eliminating tensile stresses (referred to as arch action).
- Because it is subject to additional internal stress caused by thermal expansion and contraction, this type of arch is considered to be statically indeterminate.
- Because the structure is pinned between the two base connections, which can result in additional stresses, the two-hinged arch is also statically indeterminate, although not to the degree of the fixed arch.
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- Elasticity is a measure of how much an object deforms (strain) when a given stress (force) is applied.
- Stress is a measure of the force put on the object over the area.
- (b) Compression: The same rod is compressed by forces with the same magnitude in the opposite direction.
- For very small deformations and uniform materials, ΔL is approximately the same for the same magnitude of tension or compression.
- For larger deformations, the cross-sectional area changes as the rod is compressed or stretched.
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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 .
- Bones, on the whole, do not fracture due to tension or compression.
- The bones in different parts of the body serve different structural functions and are prone to different stresses.
- Overweight people have a tendency toward bone damage due to sustained compressions in bone joints and tendons.
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- The nuclear medicine whole body bone scan is generally used in evaluations of various bone related pathology, such as for bone pain, stress fracture, nonmalignant bone lesions, bone infections, or the spread of cancer to the bone.
- Many low-dose palliative treatments (for example, radiation therapy targeting bony metastases) cause minimal or no side effects, although short-term pain flare-ups can be experienced in the days following treatment due to edemas compressing nerves in the treated area.
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- Longitudinal waves, sometimes called compression waves, oscillate in the direction of propagation.
- A sound wave contains pulses, which are the products of compressing the air (or other media) particles.
- Some longitudinal waves are also called compressional waves or compression waves.
- Sound waves are created by the compression of a medium, usually air.
- A compressed Slinky is an example of a longitudinal wave.
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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.
- When waves propagate in shallow water (where the depth is less than half the wavelength), the particle trajectories are compressed into ellipses.
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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.
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- The Bernoulli equation can be adapted to flows that are both unsteady and compressible.
- However, the assumption of inviscid flow remains in both the unsteady and compressible versions of the equation.
- Compressibility effects depend on the speed of the flow relative to the speed of sound in the fluid.
- Adapt Bernoulli's equation for flows that are either unsteady or compressible