NESC0648 LUGS

LUGS, Stress Analysis, Flexibility Factors for Rectangular Attachment on Thin Shell

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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1. NAME OR DESIGNATION OF PROGRAM: LUGS

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2. COMPUTERS

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Program name	Package id	Status	Status date
LUGS	NESC0648/01	Tested	01-MAR-1977

Machines used:

Package ID	Orig. computer	Test computer
NESC0648/01	IBM 370 series	IBM 370 series

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3. DESCRIPTION OF PROBLEM OR FUNCTION

LUGS calculates stresses,
stress indices, and flexibility factors for a rectangular
attachment on a cylindrical shell.

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4. METHOD OF SOLUTION

The program implements Bijlaard's series
solution to the thin-shell equations.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Caution         is
recommended in using the code for  attachments on very thin shells
that have  large circumferential dimension and  small longitudinal
dimension (GAMMA.GE.80, BETA2.LE.0.05, and BETA1.GE.0.3) as series
convergence and/or numeric problems seem to exist.

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6. TYPICAL RUNNING TIME

Approximately 30 seconds are required to
execute the sample problems.

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7. UNUSUAL FEATURES OF THE PROGRAM:

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8. RELATED AND AUXILIARY PROGRAMS:

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9. STATUS

Package ID	Status date	Status
NESC0648/01	01-MAR-1977	Tested at NEADB

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10. REFERENCES

W. G.  Dodge, Secondary  Stress Indices  for Integral
Structural Attachments to Straight Pipe, ORNL-TM-3476 (June 1973);
Welding Research Council Bulletin 198, September 1974.
             E. C. Rodabaugh, W. G. Dodge, and S. E. Moore, Stress
Indices  at Lug  Supports  on  Piping Systems,  ORNL-TM-4211  (May
1974); Welding Research Council Bulletin 198, September 1974.

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11. MACHINE REQUIREMENTS: 468K bytes of core storage are used.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NESC0648/01	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:

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15. NAME AND ESTABLISHMENT OF AUTHOR

                 W. G. Dodge
                 Oak Ridge National Laboratory
                 P. O. Box X
                 Oak Ridge, Tennessee  37830

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16. MATERIAL AVAILABLE

NESC0648/01

File name	File description	Records
NESC0648_01.001	JOB CONTROL CARDS FOR 'LUGS' RUN	37
NESC0648_01.002	LUGS SOURCE - FORTRAN IV EBCDIC	514
NESC0648_01.003	LUGS SAMPLE PROBLEM INPUT EBCDIC	5
NESC0648_01.004	LUGS SAMPLE PROBLEM OUTPUT	2472

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17. CATEGORIES

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

Keywords: pipes, power plants, shells, stresses.