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History
Cylinder stress
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In mechanics, a cylinder stress is a stress distribution with rotational symmetry; that is, which remains unchanged if the stressed object is rotated about some fixed axis.
Cast iron pillar of Chepstow Railway Bridge, 1852. Pin-jointed wrought iron hoops (stronger in tension than cast iron) resist the hoop stresses.
Cast iron pillar of Chepstow Railway Bridge, 1852. Pin-jointed wrought iron hoops (stronger in tension than cast iron) resist the hoop stresses.
Stress (mechanics)
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In continuum mechanics, stress is a physical quantity that describes forces present during deformation. For example, an object being pulled apart, such as a stretched elastic band, is subject to tensile stress and may undergo elongation. An object being pushed together, such as a crumpled sponge, is subject to compressive stress and may undergo shortening. The greater the force and the smaller the cross-sectional area of the body on which it acts, the greater the stress. Stress has dimension of force per area, with SI units of newtons per square meter (N/m2) or pascal (Pa).
Residual stresses inside a plastic protractor are revealed by the polarized light.
Residual stresses inside a plastic protractor are revealed by the polarized light.
Roman-era bridge in Switzerland. The stone arches in the bridge are subject to compressive stresses.
Roman-era bridge in Switzerland. The stone arches in the bridge are subject to compressive stresses.
Inca bridge on the Apurimac River. The rope in the bridge is subject to tensile stresses.
Inca bridge on the Apurimac River. The rope in the bridge is subject to tensile stresses.
Glass vase with the craquelé effect. The cracks are the result of brief but intense stress created when the semi-molten piece is briefly dipped in wat
Glass vase with the craquelé effect. The cracks are the result of brief but intense stress created when the semi-molten piece is briefly dipped in water.