NEA-0458 ERDBEBEN.

ERDBEBEN, Structure Displacements and Forces Under Earthquake Conditions

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF 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: ERDBEBEN.

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

Program name	Package id	Status	Status date
ERDBEBEN	NEA-0458/01	Tested	01-JUN-1977

Machines used:

Package ID	Orig. computer	Test computer
NEA-0458/01	IBM 370 series	IBM 370 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED

ERDBEBEN calculates the displacements and forces of a structure, excited by an earthquake.

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4. METHOD OF SOLUTION

The mathematical method is the "response spectrum modal analysis". Before calculation, the user of ERDBEBEN has to idealize the structure with finite elements and to calculate its eigenfrequencies with the program NASTRAN (level 15). The superposition of the eigenforms will be done by the "root mean square method".

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The length of the arrays can be variable (parameter card). Only the number of the different types of finite elements cannot be more than 5. The program calculates the element forces only for beam and spring elements.

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6. TYPICAL RUNNING TIME

About 2 minutes on a UNIVAC 1106 for 100 nodes and 100 elements.

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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM

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8. RELATED AND AUXILIARY PROGRAMS

For the use of ERDBEBEN, an analysis of the eigenfrequencies with the code NASTRAN (level 15) should precede. The results of NASTRAN must be written on a magnetic tape.

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9. STATUS

Package ID	Status date	Status
NEA-0458/01	01-JUN-1977	Tested at NEADB

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10. REFERENCES

- J.H. Hansen:
'Seismic Design for Nuclear Power Plants'
M.I.T. Press. (1970).

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11. MACHINE REQUIREMENTS

28k words for 100 nodes, 500 elements, 20 eigenvectors, 1 tape (NASTRAN results).

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0458/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: EXEC-8 (UNIVAC version). 370/OS (IBM version).

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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

    F. Brandhuber
    TUV Bayern E.V.
    Eichstaetterstr. 5
    D-8000 Munich 21
    Germany. F.R.

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16. MATERIAL AVAILABLE

NEA-0458/01

File name	File description	Records
NEA0458_01.001	ERDBEBEN SOURCE - F4 EBCDIC IBM	634
NEA0458_01.002	ERDBEBEN SAMPLE PROBLEM INPUT	7
NEA0458_01.003	ERDBEBEN SAMPLE PROBLEM OUTPUT	93
NEA0458_01.004	NASTRAN SAMPLE PROBLEM INPUT	50
NEA0458_01.005	ERDBEBEN SOURCE - F5 EBCDIC UNIVAC	618
NEA0458_01.006	JOB CONTROL AND INFORMATION	55