124. The behavior of thick-walled graphite cylinders loaded with internal pressure
✍ Scribed by S.E Moore
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 105 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0008-6223
No coin nor oath required. For personal study only.
✦ Synopsis
Stress-strain
behaviors which are representative of nuclear-grade, or equivalent, graphites are described and discussed. Results from monotonic and cycling loading tests are included, with consideration being given to stress vs. lateral strain as well as stress vs. longitudinal strain curves. Data published in the literature are combined with the test results reported here to place the latter in perspective and to provide a unified description of the complex behavior for use in constitutive equation development. *Research sponsored by the U.S. Atomic Energy Commission under contract with the Union Carbide Corporation. 124. The behavior of thick-walled graphite cylinders loaded with internal pressure* S. E. Moore (Oak Ridge National Laboratory, Oak Ridge, Tennessee). A series of 30 thick-walled cylinders made from a coarse-grained nuclear-grade graphite was monotonically loaded to failure with internal pressure. Axial and circumferential strains were measured on both the inside and outside surfaces using &-in. foil strain gages. A comparison between the mean experimental values and a theoretical analysis based on anisotropic plasticity theory showed good agreement. *Research sponsored by the U.S. Atomic Energy Commission under contract with the Union Carbide Corporation. 125. Time-dependent constitutive equations for RVD graphite at elevated temperatures* C. E. Pugh (Oak Ridge National Laboratory, Oak Ridge, Tennessee). A set of constitutive equations is developed to describe the time-dependent mechanical behavior of RVD graphite at temperatures from 3500" to 5000°F. These relations are based upon a transversely isotropic linear viscoelastic model with temperature-dependent parameters. Predictions of these equations are compared with experimental measurements from creep and relaxation tests.