plastic flow
Quick Summary
Plasticity is the ability of certain solids to undergo permanent deformation without rupturing when subjected to stresses. This is distinct from elasticity, where a material returns to its original shape after a load is removed. Plastic deformation is crucial in metal-forming processes like rolling and forging, as well as in geological phenomena such as rock folding.1
Brittle materials, such as cast iron, cannot be plastically deformed. However, ductile materials, like mild steel, can rearrange their internal structure to accommodate applied forces, resulting in plastic deformation that persists even after the load is removed. This property is fundamental to engineering applications and understanding geological movements.12
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- deformation and flow
The result is plastic deformation, which will continue as long as the forces are applied. The material gives the impression of flowing under the applied loads, and this flow is plastic, since, if the load is removed, the specimen retains its deformation. Eventually, plastic flow will come to…
Read MoreThe result is plastic deformation, which will continue as long as the forces are applied. The material gives the impression of flowing under the applied loads, and this flow is plastic, since, if the load is removed, the specimen retains its deformation. Eventually, plastic flow will come to…
Read More - plasticity
Plastic deformation occurs in many metal-forming processes (rolling, pressing, forging) and in geologic processes (rock folding and rock flow within the earth under extremely high pressures and at elevated temperatures).
Read MorePlastic deformation occurs in many metal-forming processes (rolling, pressing, forging) and in geologic processes (rock folding and rock flow within the earth under extremely high pressures and at elevated temperatures).
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mechanics of solids…deformation is described as a plastic deformation and the material is called elastic-plastic. Permanent deformation of a sort that depends mainly on time of exposure to a stress—and that tends to increase significantly with time of exposure—is called viscous, or creep, deformation, and materials that exhibit those characteristics, as well…
Read More…deformation is described as a plastic deformation and the material is called elastic-plastic. Permanent deformation of a sort that depends mainly on time of exposure to a stress—and that tends to increase significantly with time of exposure—is called viscous, or creep, deformation, and materials that exhibit those characteristics, as well…
Read More- mechanics of solidsInelastic response
To a good approximation, plastic deformation of crystalline solids causes no change in volume; and hydrostatic changes in stress, amounting to equal change of all normal stresses, have no effect on plastic flow, at least for changes that are of the same order or magnitude as the strength of…
Read MoreTo a good approximation, plastic deformation of crystalline solids causes no change in volume; and hydrostatic changes in stress, amounting to equal change of all normal stresses, have no effect on plastic flow, at least for changes that are of the same order or magnitude as the strength of…
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