Perhaps most famous is Stress Concentration Design Factors by Peterson, first published in 1953. Several catalogs of stress concentration factors have been published. There are experimental methods for measuring stress concentration factors including photoelastic stress analysis, thermoelastic stress analysis, brittle coatings or strain gauges.ĭuring the design phase, there are multiple approaches to estimating stress concentration factors. Instead, the stress intensity factor which defines the scaling of the stress field around a crack tip, is used. ![]() Īs the radius of curvature approaches zero, such as at the tip of a sharp crack, the maximum stress approaches infinity and a stress concentration factor cannot therefore be used for a crack. The degree of concentration of a discontinuity under typically tensile loads can be expressed as a non-dimensional stress concentration factor K t. ![]() Stress concentrations may also occur from accidental damage such as nicks and scratches. This arises from such details as holes, grooves, notches and fillets. ![]() Stress concentrations occur when there are irregularities in the geometry or material of a structural component that cause an interruption to the flow of stress. In solid mechanics, a stress concentration (also called a stress raiser or a stress riser) is a location in an object where the stress is significantly greater than the surrounding region. ![]() Internal force lines are denser near the hole
0 Comments
Leave a Reply. |