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NESC0648 LUGS

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

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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.