WIPP Benchmark calculations with the large strain SPECTROM codes

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Description

This report provides calculational results from the updated Lagrangian structural finite-element programs SPECTROM-32 and SPECTROM-333 for the purpose of qualifying these codes to perform analyses of structural situations in the Waste Isolation Pilot Plant (WIPP). Results are presented for the Second WIPP Benchmark (Benchmark II) Problems and for a simplified heated room problem used in a parallel design calculation study. The Benchmark II problems consist of an isothermal room problem and a heated room problem. The stratigraphy involves 27 distinct geologic layers including ten clay seams of which four are modeled as frictionless sliding interfaces. The analyses of the Benchmark ... continued below

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98 p.

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Callahan, G. D. & DeVries, K. L. August 1995.

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Description

This report provides calculational results from the updated Lagrangian structural finite-element programs SPECTROM-32 and SPECTROM-333 for the purpose of qualifying these codes to perform analyses of structural situations in the Waste Isolation Pilot Plant (WIPP). Results are presented for the Second WIPP Benchmark (Benchmark II) Problems and for a simplified heated room problem used in a parallel design calculation study. The Benchmark II problems consist of an isothermal room problem and a heated room problem. The stratigraphy involves 27 distinct geologic layers including ten clay seams of which four are modeled as frictionless sliding interfaces. The analyses of the Benchmark II problems consider a 10-year simulation period. The evaluation of nine structural codes used in the Benchmark II problems shows that inclusion of finite-strain effects is not as significant as observed for the simplified heated room problem, and a variety of finite-strain and small-strain formulations produced similar results. The simplified heated room problem provides stratigraphic complexity equivalent to the Benchmark II problems but neglects sliding along the clay seams. The simplified heated problem does, however, provide a calculational check case where the small strain-formulation produced room closures about 20 percent greater than those obtained using finite-strain formulations. A discussion is given of each of the solved problems, and the computational results are compared with available published results. In general, the results of the two SPECTROM large strain codes compare favorably with results from other codes used to solve the problems.

Physical Description

98 p.

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INIS; OSTI as DE95016954

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  • Other Information: PBD: Aug 1995

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  • Other: DE95016954
  • Report No.: SAND--94-1376
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/104763 | External Link
  • Office of Scientific & Technical Information Report Number: 104763
  • Archival Resource Key: ark:/67531/metadc628044

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  • August 1995

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  • June 16, 2015, 7:43 a.m.

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  • April 14, 2016, 9:50 p.m.

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Callahan, G. D. & DeVries, K. L. WIPP Benchmark calculations with the large strain SPECTROM codes, report, August 1995; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc628044/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.