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Stress Singularities Resulting From Various Boundary Conditions in Angular Corners of Plates in Extension

Williams, M. L. (1952) Stress Singularities Resulting From Various Boundary Conditions in Angular Corners of Plates in Extension. Journal of Applied Mechanics, 19 (4). pp. 526-528. ISSN 0021-8936.

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As an analog to the bending case published in an earlier paper, the stress singularities in plates subjected to extension in their plane are discussed. Three sets of boundary conditions on the radial edges are investigated: free-free, clamped-clamped, and clamped-free. Providing the vertex angle is less than 180 degrees, it is found that unbounded stresses occur at the vertex only in the case of the mixed boundary condition with the strength of the singularity being somewhat stronger than for the similar bending case. For vertex angles between 180 and 360 degrees, all the cases considered may have stress singularities. In amplification of some work of Southwell, it is shown that there are certain analogies between the characteristic equations governing the stresses in extension and bending, respectively, if ν, Poisson's ratio, is replaced by -ν. Finally, the free-free extensional plate behaves locally at the origin exactly the same as a clamped-clamped plate in bending, independent of Poisson's ratio. In conclusion, it is noted that the free-free case analysis may be applied to stress concentrations in V-shaped notches.

Item Type:Article
Additional Information:© 1952 American Society of Mechanical Engineers. Manuscript received by ASME Applied Mechanics Division, February 28, 1952. Presented at the West Coast Conference of the Applied Mechanics Division, Los Angeles, Calif., June 26-28, 1952, of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS.
Issue or Number:4
Record Number:CaltechAUTHORS:20140730-111744170
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47672
Deposited By: George Porter
Deposited On:30 Jul 2014 18:44
Last Modified:03 Oct 2019 06:55

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