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NESC0250 SAFE-PCRS.

SAFE-PCRS, Stress Analysis of Axisymmetric Composite Structure by Finite Elements Method

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1. NAME OR DESIGNATION OF PROGRAM:  SAFE-PCRS.
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
Program name Package id Status Status date
SAFE-PCRS NESC0250/01 Tested 01-AUG-1967

Machines used:

Package ID Orig. computer Test computer
NESC0250/01 IBM 360 series IBM 360 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

SAFE-PCRS numerically determines  the stress and strain distribution within either homogeneous or heterogeneous thick-walled bodies of revolution. It is designed for  the analysis of multi-material axisymmetric composite structures such as reinforced and/or prestressed concrete vessels. Deformations must be within the elastic limit of the materials considered and only bodies of revolution subjected to axisymmetric loading can be treated.
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4. METHOD OF SOLUTION

SAFE-PCRS employs the finite element method. A reference GRID defining the elements may be generated by hand, by  computer, or by a combination of the two. The vertices of the elements are called nodes. Each node has two degrees of freedom, translation in the radial and in the axial direction. A displacement function for the general element is assumed in the form of polynomials. By matrix formulation and manipulation, the internal potential energy is added to the external potential energy of the system. The total energy is minimized by differentiation and the static equilibrium of the structure determined.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

   Maximum number of nodes = 1200.
   Maximum number of elements = 2250.
   Not valid for incompressible materials.
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6. TYPICAL RUNNING TIME:  24 minutes are required for a full capacity problem.
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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM
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8. RELATED AND AUXILIARY PROGRAMS

SAFE-AXISYM (ACC abstract 251) the method of solution is iterative in SAFE-AXISYM as opposed to the direct method used in SAFE-PCRS and the capacity of SAFE-AXISYM is reduced allowing all computation in the 32k core. An auxiliary program has been written to produce a plot tape for the SC-4020 recorder from the stress tapes written by SAFE-PCRS.
SAFE-PCRS is more versatile, less expensive to use, easier to convert between operating systems, and has far less complicated input data than target, an earlier IBM7044 program.
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9. STATUS
Package ID Status date Status
NESC0250/01 01-AUG-1967 Tested at NEADB
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10. REFERENCES

- D.C. Cornell:
SAFE-PCRS, A Computer Program for the Stress Analysis of Composite Bodies of Revolution - Input Instructions.
  GA-6588, August 1 1965
- Yusef R. Rashid:
  Analysis of Axisymmetric Composite Structures by the Finite Element Method.
  GA-6763, October 15 1965
- Prestress Concrete Reactor Vessels Analytical Methods Development.
  GACD-7258, June 1966
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11. MACHINE REQUIREMENTS:  32k memory.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC0250/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED

IBM 7040/7044 operating system (16/32k), version ix. Tape unit assignments are as follows

                         B5   stress tape
                         C5   stress tape
                         C6   stiffness tape
                         C7   displacement tape
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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Four computer tapes can be generated on each original run of the program. All tapes must be used on each run, regardless of their eventual use.
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15. NAME AND ESTABLISHMENT OF AUTHOR

                 D. C. Cornell
                 Gulf General Atomic Incorporated
                 P. O. Box 608
                 San Diego, California  92112
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16. MATERIAL AVAILABLE
NESC0250/01
File name File description Records
NESC0250_01.001 SOURCE & DATA %360/65< 1592
NESC0250_01.002 OUTPUT 770
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17. CATEGORIES
  • I. Deformation and Stress Distributions, Structural Analysis and Engineering Design Studies

Keywords: deformation, distribution, elasticity, stress analysis, stresses.