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 AUTHORS, MATERIAL, CATEGORIES

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Program name | Package id | Status | Status date |
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GRFPAK | NESC0760/01 | Tested | 25-MAY-1981 |

Machines used:

Package ID | Orig. computer | Test computer |
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NESC0760/01 | IBM 3033 | IBM 3033 |

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3. DESCRIPTION OF PROBLEM OR FUNCTION

GRFPAK is a graphics package written for the CORTES finite-element programs. It includes three plotting routines to assist in analyzing, interpreting, and presenting CORTES results. One plotting routine displays stresses or stress indices by means of contour curves drawn within either the outside or inside surface outline of a quarter section of the tee- joint. Using this routine, one can also obtain plots of the finite- element mesh as viewed from any point in space. A second plotting routine gives a stress versus distance plot along any specified line of nodes. A third routine displays cross-sectional views of the finite-element mesh for both the undeformed (original) and deformed configuration. The deformed configurations are drawn using an exaggerated scale specified by the user.

GRFPAK is a graphics package written for the CORTES finite-element programs. It includes three plotting routines to assist in analyzing, interpreting, and presenting CORTES results. One plotting routine displays stresses or stress indices by means of contour curves drawn within either the outside or inside surface outline of a quarter section of the tee- joint. Using this routine, one can also obtain plots of the finite- element mesh as viewed from any point in space. A second plotting routine gives a stress versus distance plot along any specified line of nodes. A third routine displays cross-sectional views of the finite-element mesh for both the undeformed (original) and deformed configuration. The deformed configurations are drawn using an exaggerated scale specified by the user.

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4. METHOD OF SOLUTION

All of the plotter software calls are channeled through one of the several multiple entries in subroutine PLTINT. The segment of GRFPAK designed for contour, mesh, and displacement plotting can produce the finite-element mesh for the original geometry and for each load case of the displaced geometry, and contour plots for any surface in any quadrant for any stress (or temperature). These contours may be displayed on the mesh or on the outline of the tee. The node line plot segment produces the plots of the longitudinal (along the node line) stresses and transverse (normal to the node line) stresses along the 0 degree node line (x-y plane) and 90 degree node line (y-z plane) for a given surface. The global (x, y, z) coordinates for the nodes along the 0 degree node line are given a -45 degree rotation to a new x'-y' coordinate system. The abscissa values in the plots represent x' along this line. For the 90 degree node line the abscissa values for the plots represent the y global coordinate values. For THFA, the temperature values along these node lines are plotted. If more than one time- step is being plotted for THFA or TSA, all of the time-steps will appear on one graph. The cross-section segment of GRFPAK produces plots of the x=0 and z=0 planes of the tee for SA and EP. The entire cross section or only a specified number of nodes along the axes from the control node may be represented.

All of the plotter software calls are channeled through one of the several multiple entries in subroutine PLTINT. The segment of GRFPAK designed for contour, mesh, and displacement plotting can produce the finite-element mesh for the original geometry and for each load case of the displaced geometry, and contour plots for any surface in any quadrant for any stress (or temperature). These contours may be displayed on the mesh or on the outline of the tee. The node line plot segment produces the plots of the longitudinal (along the node line) stresses and transverse (normal to the node line) stresses along the 0 degree node line (x-y plane) and 90 degree node line (y-z plane) for a given surface. The global (x, y, z) coordinates for the nodes along the 0 degree node line are given a -45 degree rotation to a new x'-y' coordinate system. The abscissa values in the plots represent x' along this line. For the 90 degree node line the abscissa values for the plots represent the y global coordinate values. For THFA, the temperature values along these node lines are plotted. If more than one time- step is being plotted for THFA or TSA, all of the time-steps will appear on one graph. The cross-section segment of GRFPAK produces plots of the x=0 and z=0 planes of the tee for SA and EP. The entire cross section or only a specified number of nodes along the axes from the control node may be represented.

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10. REFERENCES

P. G. Fowler and J. W. Bryson, User's Manual for the

CORTES Graphics Package GRFPAK, ORNL/NUREG/TM-127, August 1977.

P. G. Fowler and J. W. Bryson, User's Manual for the

CORTES Graphics Package GRFPAK, ORNL/NUREG/TM-127, August 1977.

NESC0760/01, included references:

- Zs. Revesz:Qualification of Unreinforced Man-Holes in Thin-Walled Piping of

Auxiliary/Emergency Cooling Water Systems. Special reprint of a

paper presented at Int.Meeting on 'Thermal Nuclear Reactor Safety'

August 29-September 2, 1982, Chicago.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The

program was developed to produce plots on a 925/1036 CalComp plotter. The amount of memory used can be increased or decreased by changing the value of the variable MTOT and dimensioning the A array by MTOT in the MAIN program. GRFPAK requires as input two data sets generated by CORTES. The logical unit 12 data set contains the connectivity of the nodes, coordinates of the nodes, and the stress quantities (temperature quantities for THFA). Logical unit 16 contains the displacements at the nodes for each load case produced by SA and EP. Logical unit 13 is a temporary unit employed when cross section plots are requested. A dummy subroutine IDAY was provided by the NESC. The routine IDAY, which is an ORNL system routine, returns the current date in the form MM/DD/YY.

The

program was developed to produce plots on a 925/1036 CalComp plotter. The amount of memory used can be increased or decreased by changing the value of the variable MTOT and dimensioning the A array by MTOT in the MAIN program. GRFPAK requires as input two data sets generated by CORTES. The logical unit 12 data set contains the connectivity of the nodes, coordinates of the nodes, and the stress quantities (temperature quantities for THFA). Logical unit 16 contains the displacements at the nodes for each load case produced by SA and EP. Logical unit 13 is a temporary unit employed when cross section plots are requested. A dummy subroutine IDAY was provided by the NESC. The routine IDAY, which is an ORNL system routine, returns the current date in the form MM/DD/YY.

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NESC0760/01

File name | File description | Records |
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NESC0760_01.001 | INFORMATION FILE | 101 |

NESC0760_01.002 | SOURCE (F4,EBCDIC) | 3516 |

NESC0760_01.003 | INPUT DATA FOR SAMPLE PROBLEM (UNIT 05) | 30 |

NESC0760_01.004 | INPUT DATA FOR SAMPLE PROBLEM (UNIT 12) | 147 |

NESC0760_01.005 | INPUT DATA FOR SAMPLE PROBLEM (UNIT 16) | 16 |

NESC0760_01.006 | PRINTED OUTPUT OF SAMPLE PROBLEM | 277 |

NESC0760_01.007 | JCL AT NEA D.B. (INCLUDING OVERLAY CARDS) | 63 |

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

Keywords: computer graphics, finite element method, pipes, stresses.