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NEA-0219 SPANDE.

SPANDE, Stress Analysis of General Spaceframe and Pipework
SPATAM, Tilt Angle Calculation of Framework for Program SPANDE

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, FEATURES, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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1. NAME OR DESIGNATION OF PROGRAM:  SPANDE.
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2. COMPUTERS
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Program name Package id Status Status date
SPANDE NEA-0219/01 Tested 01-MAR-1973
SPATAM NEA-0219/02 Tested 01-OCT-1971

Machines used:

Package ID Orig. computer Test computer
NEA-0219/01 IBM 370 series IBM 370 series
NEA-0219/02 IBM 360 series IBM 360 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

The programme is intended to analyse almost any type of spaceframe. Members of the frame may be either straight or of constant curvature between nodes provided that, in the case of curved members, one of the principal axes of the cross-section of the member lies in the same plane as the member. Loading may comprise concentrated loads, distributed loads,  thermal loads or may take the form of specified displacements.
The programme calculates the forces and moments in all the members of the framework, the reactions at all external restraints and the displacements of all the nodes. For pipework problems, the maximum stress difference in the pipe, calculated in accordance with the code of practice, is also quoted.
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4. METHODS

METHOD OF SOLUTION. The framework is solved by displacement methods  involving stiffness matrices, making it possible to analyse spaceframes with virtually any number of redundancies.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

For ICL 4/70, the framework is limited to 1000 nodes, 2000 members, 100 different member types or 200 specified nodal displacements.
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6. TYPICAL RUNNING TIME

Approximate running time = (ns**2 / 800 + 2.5) where n = number of nodes
s = maximum difference between the numbers of two inter-connected nodes.
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7. UNUSUAL FEATURES

UNUSUAL FEATURES OF THE PROGRAM. Simplification of input data - generalisation of member types - incorporation of SPATAM.
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8. RELATED AND AUXILIARY PROGRAMS

SPATAM, an auxiliary programme to calculate the tilt angle of any or all of the members of the framework.
GRID-FRAME is a similar UKAEA programme for more economical running  of 2-d frameworks.
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9. STATUS
Package ID Status date Status
NEA-0219/01 01-MAR-1973 Tested at NEADB
NEA-0219/02 01-OCT-1971 Tested at NEADB
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10. REFERENCES

REFERENCES.
- D.C. Davies, J.A. Enderby:
  SPANDE, A Preliminary Guide to Space Frame and Pipe-Work Analysis by Means of a General Purpose Computer Program 1967
  TRG report 1409(R).
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11. MACHINE REQUIREMENTS

32k core storage. Data volumes - 4 scratch tapes (9, 10, 11, 12) input, output, overlay tapes.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0219/01 FORTRAN+ASSEMBLER
NEA-0219/02 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  IBSYS version 13.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHOR

      D.C. Davies, Dr. J.A. Enderby and Mrs. J.A. Knowles
      C.T.S., UKAEA
      Risley
      United Kingdom
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16. MATERIAL AVAILABLE
NEA-0219/01
File name File description Records
NEA0219_01.001 SOURCE PROGRAMME 3572
NEA0219_01.002 RISLEY SYSTEM ROUTINES 1029
NEA0219_01.003 OVERLAY,DD CARDS+SAMPLE INPUT 69
NEA0219_01.004 SAMPLE OUTPUT 721
NEA-0219/02
File name File description Records
NEA0219_02.001 SOURCE PROGRAM + DATA FOR A SAMPLE CASE 203
NEA0219_02.002 OUTPUT PRINT 17
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17. CATEGORIES
  • I. Deformation and Stress Distributions, Structural Analysis and Engineering Design Studies

Keywords: mechanical properties, pipes, stress analysis.