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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- Bones are made of a combination of compact bone tissue for strength and spongy bone tissue for compression in response to stresses.
- Spongy bone reduces the density of bone, allowing the ends of long bones to compress as the result of stresses applied to the bone.
- Spongy bone is prominent in areas of bones that are not heavily stressed or where stresses arrive from many directions .
- The epiphysis of a bone, such as the neck of the femur, is subject to stress from many directions.
- Trabeculae in spongy bone are arranged such that one side of the bone bears tension and the other withstands compression.
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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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- Spinal cord compression occurs when the spinal cord is compressed by bone fragments.
- Example symptoms of cord compression include back pain, a dermatome of increased sensation, paralysis below the compression, decreased sensation below the compression, and more.
- Spinal cord compression develops when the spinal cord is compressed by bone fragments from a vertebral fracture, a tumor, abscess, ruptured intervertebral disc, or other lesion .
- Symptoms suggestive of cord compression are back pain, a dermatome of increased sensation, paralysis of limbs below the level of compression, decreased sensation below the level of compression, urinary and fecal incontinence and/or urinary retention.
- In spinal cord compression, the spinal cord (shown here) may be compressed by bone fragments from a vertebral fracture, a tumor, abscess, ruptured intervertebral disc, or other lesion.
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- The cause of pain and dysfunction often results from either abnormal forces or prolonged repetitive compressive or shearing forces (running or jumping) on the PF joint .
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- Tensile strength is defined as a stress, measured as force per unit area, that a material can withstand before failing.
- Thermal compatibility, not causing unacceptable stresses in response to changing temperatures
- Durability in the concrete environment, irrespective of corrosion or sustained stress
- If a material with high strength in tension, such as steel, is placed within the concrete, the composite material (reinforced concrete) resists not only compression, but also bending and other direct tensile actions.
- A reinforced concrete section where the concrete resists the compression, and steel resists the tension, can be made into almost any shape and size for the construction industry, as exhibited by the Philips Pavilion .
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- For Unix and Unix-like operating systems, the convention is to use TAR format, compressed by compress, gzip, bzip, or bzip2.
- For MS Windows, the standard method for distributing directory trees is zip format, which happens to do compression as well, so there is no need to compress the archive after creating it.
- Producing compressed tar files (or tarballs) is pretty easy.
- On some systems, the tar command can produce a compressed archive itself; on others, a separate compression program is used.