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NESC9851 MATLOC.

MATLOC, Transient Non Linear Deformation in Fractured Rock

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1. NAME OR DESIGNATION OF PROGRAM:  MATLOC.
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2. COMPUTERS
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Program name Package id Status Status date
MATLOC NESC9851/01 Tested 23-JUN-1989

Machines used:

Package ID Orig. computer Test computer
NESC9851/01 CDC CYBER 176 CDC CYBER 830
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3. DESCRIPTION OF PROGRAM OR FUNCTION

MATLOC is a nonlinear, transient, two-dimensional (planer and axisymmetric), thermal- stress, finite-element code designed to determine the deformation within a fractured rock mass. The mass is modeled as a nonlinear anisotropic elastic material which can exhibit stress-dependent bi-linear locking behavior.
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4. METHOD OF SOLUTION

The numerical solution of the nonlinear equilibrium equations is performed using the incremental tangential  stiffness method in which the material stiffness matrices are continually updated.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Three-dimensional deformations and discontinuous displacements across open fractures and faults cannot be modeled. MATLOC can solve a problem with of 400 elements  with  up to 1000  nodes, of which 200  may be fixed.
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6. TYPICAL RUNNING TIME:
NESC9851/01
NEA-DB ran the test cases included in this package on a CDC CYBER 830 computer. Execution times varied between 1 second for  sample cases 1 and 2, and 690 seconds for the Transient-BWIP case.
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7. UNUSUAL FEATURES OF THE PROGRAM

MATLOC is primarily suited for use in room and canister scale studies of the excavation, operational, and short-term post-closure processes for sites within  geological media which do not exhibit significant viscoelastic (creep) phenomena or in situations where the viscoelastic behavior can be ignored.
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8. RELATED AND AUXILIARY PROGRAMS

In order to perform a complete thermomechanical analysis, MATLOC must be used in conjunction with a SCEPTER thermal analysis code, such as DOT-BPMD (NESC Summary R9833) or SWENT. The heat transfer code is used to compute the steady-state or transient thermal field in the form of nodal temperatures to be read by MATLOC.
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9. STATUS
Package ID Status date Status
NESC9851/01 23-JUN-1989 Tested at NEADB
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10. REFERENCES:
NESC9851/01, included references:
- INTERA Environmental Consultants Inc. :
  MATLOC: A Two-Dimensional and Axisymmetric Nonlinear Finite
  Element Transient Thermal Stress Analysis Code for Rock Masses
  That Exhibit Bilinear Locking Behavior
  ONWI-421 (April 1983)
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11. MACHINE REQUIREMENTS:  80K words.
NESC9851/01
The test cases included in this package ran on a CDC CYBER 830 in 276,800 (octal) words of main storage.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC9851/01 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:
NESC9851/01
NOS 2.5.1 (CDC CYBER 830) with FTN 4.8 compiler.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

            P. Boonlualohr, G. Mustoe, and
            J.R. Williams, Dames & Moore
            B.H. Lester and P.S. Huyakorn
            GeoTrans, Inc.
            Office of Nuclear Waste Isolation
            Battelle Project Management Division
            505 King Avenue, Columbus, Ohio 43201

Contact     M.J. Golis
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16. MATERIAL AVAILABLE
NESC9851/01
File name File description Records
NESC9851_01.001 Information file 81
NESC9851_01.002 JCL and control information 29
NESC9851_01.003 MATLOC FORTRAN source 2579
NESC9851_01.004 Sample problem 1 input 34
NESC9851_01.005 Sample problem 1 temperature data 13
NESC9851_01.006 Sample problem 2 input 34
NESC9851_01.007 Sample problem 2 temperature data 13
NESC9851_01.008 Sample problem 3 input 75
NESC9851_01.009 Sample problem 3 temperature data 43
NESC9851_01.010 Sample problem 4 input 63
NESC9851_01.011 Application data for TRANSIENT-BWIP S.P. 653
NESC9851_01.012 Application data for GEOSTATIC-BWIP S.P. 365
NESC9851_01.013 Temperature data for BWIP sample problem 5271
NESC9851_01.014 Sample problem 1 output 176
NESC9851_01.015 Sample problem 2 output 176
NESC9851_01.016 Sample problem 3 output 365
NESC9851_01.017 Sample problem 4 output 689
NESC9851_01.018 TRANSIENT-BWIP sample problem output 39082
NESC9851_01.019 GEOSTATIC-BWIP sample problem output 3226
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17. CATEGORIES
  • R. Environmental and Earth Sciences

Keywords: deformation, finite element method, fracture properties, nonlinear problems, radioactive waste storage, thermal stresses, two-dimensional.