Computer Programs

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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To submit a request, click below on the link of the version you wish to order. Rules for end-users are
available here.

Program name | Package id | Status | Status date |
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NONSAP-C | NESC0974/01 | Tested | 20-FEB-1989 |

Machines used:

Package ID | Orig. computer | Test computer |
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NESC0974/01 | CDC 7600 | CDC CYBER 830 |

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3. DESCRIPTION OF PROBLEM OR FUNCTION

NONSAP-C is a finite element program for determining the static and dynamic response of three- dimensional reinforced concrete structures. Long-term, or creep, behavior of concrete structures can also be analyzed. Nonlinear constructive relations for concrete under short-term loads are incorporated in two time-independent models, a variable-modulus approach with orthotropic behavior induced in the concrete due to the development of different tangent moduli in different directions and an elastic-plastic model in which the concrete is assumed to be a continuous, isotropic, and linearly elastic-plastic strain- hardening-fracture material. A viscoelastic constitutive model for long-term thermal creep of concrete is included.

Three-dimensional finite elements available in NONSAP-C include a truss element, a multinode tendon element for prestressed and post- tensioned concrete structures, an elastic-plastic membrane element to represent the behavior of cavity liners, and a general isoparametric element with a variable number of nodes for analysis of solids and thick shells.

NONSAP-C is a finite element program for determining the static and dynamic response of three- dimensional reinforced concrete structures. Long-term, or creep, behavior of concrete structures can also be analyzed. Nonlinear constructive relations for concrete under short-term loads are incorporated in two time-independent models, a variable-modulus approach with orthotropic behavior induced in the concrete due to the development of different tangent moduli in different directions and an elastic-plastic model in which the concrete is assumed to be a continuous, isotropic, and linearly elastic-plastic strain- hardening-fracture material. A viscoelastic constitutive model for long-term thermal creep of concrete is included.

Three-dimensional finite elements available in NONSAP-C include a truss element, a multinode tendon element for prestressed and post- tensioned concrete structures, an elastic-plastic membrane element to represent the behavior of cavity liners, and a general isoparametric element with a variable number of nodes for analysis of solids and thick shells.

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4. METHOD OF SOLUTION

NONSAP-C uses the isoparametric finite element formulation. Dynamic problems are solved by integration of the equa- tions of motion in the time domain using either the Wilson-Theta or Newmark-Beta integration algorithms. Equilibrium iteration or stiffness reformulation schemes can be applied in solving the nonlinear discretized equations.

NONSAP-C uses the isoparametric finite element formulation. Dynamic problems are solved by integration of the equa- tions of motion in the time domain using either the Wilson-Theta or Newmark-Beta integration algorithms. Equilibrium iteration or stiffness reformulation schemes can be applied in solving the nonlinear discretized equations.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

An out-of-core equation solver for large systems of linear equations allows practically unlimited problem size. The truss and tendon elements are assumed to have constant area. The tendon element cannot be used in geometrically nonlinear analyses. The membrane element can have from 4 to 8 nodes and the general three-dimensional isoparametric element from 8 to 21.

An out-of-core equation solver for large systems of linear equations allows practically unlimited problem size. The truss and tendon elements are assumed to have constant area. The tendon element cannot be used in geometrically nonlinear analyses. The membrane element can have from 4 to 8 nodes and the general three-dimensional isoparametric element from 8 to 21.

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6. TYPICAL RUNNING TIME

A problem with 10,569 equations and a half bandwidth of 532 required 2750 CPU seconds on a CDC7600. The longest running sample problem requires about 670 CPU seconds on a CDC7600.

A problem with 10,569 equations and a half bandwidth of 532 required 2750 CPU seconds on a CDC7600. The longest running sample problem requires about 670 CPU seconds on a CDC7600.

NESC0974/01

The test cases included in this package have been run at NEA-DB on a CDC CYBER 830 computer. The following CPU times (in seconds) were found: case 1: 48; case 2: 113; case 3: 1120[ top ]

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8. RELATED AND AUXILIARY PROGRAMS

NONSAP-C is based on the NONlinear Stress Analysis Program, NONSAP. A companion code, INGEN (NESC Abstract 975), which is a general-purpose two- and three-dimensional mesh generator for use with finite element programs, can serve as a

preprocessor for NONSAP-C. MOVIE.LASL, which is a LANL interactive graphics program for display of finite element models and results of finite-element analysis programs, can serve as a postprocessor.

NONSAP-C is based on the NONlinear Stress Analysis Program, NONSAP. A companion code, INGEN (NESC Abstract 975), which is a general-purpose two- and three-dimensional mesh generator for use with finite element programs, can serve as a

preprocessor for NONSAP-C. MOVIE.LASL, which is a LANL interactive graphics program for display of finite element models and results of finite-element analysis programs, can serve as a postprocessor.

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10. REFERENCES

- C.A. Anderson, P.D. Smith, and L.M. Carruthers,

NONSAP-C: A Nonlinear Stress Analysis Program for Concrete

Containments Under Static, Dynamic, and Long-Term Loadings,

NUREG/CR-0416 (LA-7496-MS Rev. 1), January 1982.

- K.J. Bathe, E.L. Wilson, and R.H. Iding,

NONSAP-A Structural Analysis Program for Static and Dynamic

Response of Nonlinear Systems,

UC-SESM-74-3, February 1974.

- P.D. Smith, W.A. Cook, and C.A. Anderson,

Finite Element Analysis of Prestressed Concrete Reactor Vessel,

Paper H2/5, 4th International Conference on Structural Mechanics

in Reactor Technology,

San Francisco, California, August 1977.

- William A. Cook,

Validation Experiences with a Nonlinear Shell of Revolution in

ADINA and NONSAP,

LA-9237-MS, February 1982.

- C.A. Anderson, P.D. Smith, and L.M. Carruthers,

NONSAP-C: A Nonlinear Stress Analysis Program for Concrete

Containments Under Static, Dynamic, and Long-Term Loadings,

NUREG/CR-0416 (LA-7496-MS Rev. 1), January 1982.

- K.J. Bathe, E.L. Wilson, and R.H. Iding,

NONSAP-A Structural Analysis Program for Static and Dynamic

Response of Nonlinear Systems,

UC-SESM-74-3, February 1974.

- P.D. Smith, W.A. Cook, and C.A. Anderson,

Finite Element Analysis of Prestressed Concrete Reactor Vessel,

Paper H2/5, 4th International Conference on Structural Mechanics

in Reactor Technology,

San Francisco, California, August 1977.

- William A. Cook,

Validation Experiences with a Nonlinear Shell of Revolution in

ADINA and NONSAP,

LA-9237-MS, February 1982.

NESC0974/01, included references:

- P.D. Smith, C.A. Anderson :NONSAP-C: A Nonlinear Stress Analysis Program for Concrete

Containments Under Static, Dynamic, and Long-Term Loadings

NUREG/CR-0416 LA-7496-MS (January 1978)

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11. MACHINE REQUIREMENTS

Approximately 115K (octal) words of small core memory and 345K (octal) words of large core memory and 19 disk files are used by the program.

Approximately 115K (octal) words of small core memory and 345K (octal) words of large core memory and 19 disk files are used by the program.

NESC0974/01

To run the test cases on a CDC CYBER 830 computer, 160,000 (octal) words of small core storage (SM) and 345,000 (octal) words of large core memory (LM) were required.[ top ]

Package ID | Computer language |
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NESC0974/01 | FORTRAN-IV EXTENDED |

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NESC0974/01

NOS2.5.1 (CDC CYBER 830).[ top ]

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NESC0974/01

File name | File description | Records |
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NESC0974_01.001 | This information file | 58 |

NESC0974_01.002 | JCL and control information | 31 |

NESC0974_01.003 | NONSAP-C source program | 12091 |

NESC0974_01.004 | Input sample problem 1 | 41 |

NESC0974_01.005 | Input sample problem 2 | 43 |

NESC0974_01.006 | Input sample problem 3 | 89 |

NESC0974_01.007 | Input sample problem 4 | 525 |

NESC0974_01.008 | Input sample problem 5 | 1512 |

NESC0974_01.009 | Input sample problem 6 | 79 |

NESC0974_01.010 | Input sample problem 7 | 302 |

NESC0974_01.011 | Input sample problem 8 | 76 |

NESC0974_01.012 | Input sample problem 9 | 39 |

NESC0974_01.013 | Input sample problem 10 | 85 |

NESC0974_01.014 | Input sample problem 11 | 777 |

NESC0974_01.015 | Input sample problem 12 | 1328 |

NESC0974_01.016 | Output sample problem | 6864 |

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- I. Deformation and Stress Distributions, Structural Analysis and Engineering Design Studies

Keywords: concretes, containment systems, finite element method, nonlinear problems, prestressed concrete, reactor vessels, reinforced concrete, stress analysis.