NESC0542 PSA2

PSA-2, Stress Analysis, Thermal Expansion and Loads in Multi Anchor Piping System

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, REFERENCE, 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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1. NAME OR DESIGNATION OF PROGRAM: PSA2

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2. COMPUTERS

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Program name	Package id	Status	Status date
PSA-2	NESC0542/01	Tested	01-MAR-1975

Machines used:

Package ID	Orig. computer	Test computer
NESC0542/01	IBM 370 series	IBM 370 series

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3. DESCRIPTION OF PROBLEM OR FUNCTION

PSA2 computes the reactions and stresses caused by thermal expansion and loads in a multi-anchor piping system which may contain loops and may be partially restrained at any point in any direction.

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4. METHOD OF SOLUTION

The linear equations for the statically indeterminate pipe system are set up by a generalization of Brock's matrix method. By a systematic use of linear transforms, the matrix of the system of linear equations can be obtained by incidence algebra in the form of a symmetric banded matrix.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM: Maximum of -, 36 sections

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6. TYPICAL RUNNING TIME: 1 to 3 minutes are required on a Model 50.

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7. UNUSUAL FEATURES OF THE PROGRAM

PSA2 takes into account -
   (a) elasticity of the attachment of the pipe to the foundation,
(b) restraints on pipe displacements by anchors and intermediate        partial constraints of linear type,
(c) given constant forces and moments acting upon the pipe        system,
   (d) thermal expansion,
   (e) any geometrical structure of the pipe system,
   (f) several cases of stressing per pipe system, and
   (g) both metric and English units.

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8. RELATED AND AUXILIARY PROGRAMS:

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9. STATUS

Package ID	Status date	Status
NESC0542/01	01-MAR-1975	Tested at NEADB

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10. REFERENCE:

NESC0542/01, included references:

- B. H. Boonstra, A. N. Nickols, W. J. Huges and W. D. Gross;
Pipe Stress Analysis Code, PSA 2, AI-64-MEMO-142 Revison 1.

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11. MACHINE REQUIREMENTS: 64K memory.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NESC0542/01	FORTRAN-IV

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED: OS/360.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Function LOC must be user-supplied. It returns the address of its argument as an integer to the calling program.

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15. NAME AND ESTABLISHMENT OF AUTHOR

                 A. N. Nickols
                 Codes Coordinator
                 Atomics International
                 P. O. Box 309
                 Canoga Park, California  91304

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16. MATERIAL AVAILABLE

NESC0542/01

File name	File description	Records
NESC0542_01.001	SOURCE PROGRAM (F4)	1356
NESC0542_01.002	JCL	12
NESC0542_01.003	SAMPLE PROBLEM INPUT DATA	19
NESC0542_01.004	SAMPLE PROBLEM PRINTED OUTPUT	190

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17. CATEGORIES

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

Keywords: pipes, stresses, thermal expansion.