Stress Analysis of Specimens for in-Pile Creep Tests of Parabolic Graphite Beams

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The irradiation-induced creep of graphite is being investigated in experiments that consist of loading parabolically shaped cantilever beams at the free end and measuring the resulting deflections with time. A series of stress analyses was made to verify the applicability of the elementary strength-of- materials approach for obtaining relations between stress and creep strain from the load-deflection data. The results of the analyses, which included a theory- of-elasticity solution, an evaluation of the effect of shear, and a bending analysis using an actual stress-strain diagram for graphite, show that an elementary strength-of-materials approach is adequate to predict the initial or … continued below

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21 p.

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Corum, J. M. February 1, 1964.

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The irradiation-induced creep of graphite is being investigated in experiments that consist of loading parabolically shaped cantilever beams at the free end and measuring the resulting deflections with time. A series of stress analyses was made to verify the applicability of the elementary strength-of- materials approach for obtaining relations between stress and creep strain from the load-deflection data. The results of the analyses, which included a theory- of-elasticity solution, an evaluation of the effect of shear, and a bending analysis using an actual stress-strain diagram for graphite, show that an elementary strength-of-materials approach is adequate to predict the initial or elastic stresses. Preliminary results from the in-pile experiments indicate that the creep strains are linear with stress; thus the initially linear bending stress distribution given by the elementary theory remains unchanged during creep. (auth)

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21 p.

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Other Information: Orig. Receipt Date: 31-DEC-64

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  • February 1, 1964

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  • Sept. 16, 2016, 12:32 a.m.

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  • Nov. 23, 2024, 2:41 a.m.

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Corum, J. M. Stress Analysis of Specimens for in-Pile Creep Tests of Parabolic Graphite Beams, report, February 1, 1964; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc865209/: accessed March 15, 2025), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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