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In mechanics, strain is defined as relative deformation, compared to a reference position configuration. Different equivalent choices may be made for the expression of a strain field depending on whether it is defined with respect to the initial or the final configuration of the body and on whether the metric tensor or its dual is considered.
The same for normal viscous stresses can be found in Sharma (2019). [ 12 ] The relation between stress and its effects and causes, including deformation and rate of change of deformation, can be quite complicated (although a linear approximation may be adequate in practice if the quantities are small enough).
The material deformation gradient tensor characterizes the local deformation at a material point with position vector , i.e., deformation at neighbouring points, by transforming (linear transformation) a material line element emanating from that point from the reference configuration to the current or deformed configuration, assuming continuity ...
The maximum compressive stress is found at the uppermost edge of the beam while the maximum tensile stress is located at the lower edge of the beam. Since the stresses between these two opposing maxima vary linearly , there therefore exists a point on the linear path between them where there is no bending stress.
Young's modulus is defined as the ratio of the stress (force per unit area) applied to the object and the resulting axial strain (displacement or deformation) in the linear elastic region of the material. Although Young's modulus is named after the 19th-century British scientist Thomas Young, the concept was developed in 1727 by Leonhard Euler.
The neck is a delicate structure which includes the spinal cord, major blood vessels and nerves. “We see a lot of injuries, like neck pain or even worse, such as injuring the neck vasculature or ...
With that in mind, the time-dependent mechanical properties of tissues can be incredibly interdependent on molecular interactions and the chemical environment in which a specific tissue is native to. In comparison to other tissue, articular cartilage itself begins to enlarge when subjected to unloading and this puts the microstructure of the ...
Recently, a new mechanosensitive ion channel family was cloned, with two mammalian members, PIEZO1 and PIEZO2. [87] Both these channels are expressed in the lungs and bladder, organs with important mechanosensory functions. Piezo1 is also expressed in the skin, and in red blood cells, and its gain of function mutations cause hereditary ...