last modified: 01-MAY-1974 | catalog | categories | new | search |

NESC0451 SAFE-CRACK

SAFE-CRACK, Viscoelastic Analysis of Plane and Axisymmetric Concrete System, Finite Elements Method

top ]
1. NAME OR DESIGNATION OF PROGRAM:  SAFE-CRACK
top ]
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-CRACK NESC0451/01 Tested 01-JUL-1976

Machines used:

Package ID Orig. computer Test computer
NESC0451/01 IBM 370 series IBM 370 series
top ]
3. DESCRIPTION OF PROBLEM OR FUNCTION

SAFE-CRACK performs a  visco-
elastic  analysis of  plane  and  axisymmetric composite  concrete
structures  subjected  to  transient  temperature  and  mechanical
loadings.   The  specific   creep  of  concrete  as   an  age  and
temperature-dependent   function,  and   concrete  failure   under
combined stresses  are considered.  Particular emphasis  is placed
on the cracking analysis in  concrete structures and the nonlinear
dependence of creep property on transient temperature.
top ]
4. METHOD OF SOLUTION

The  program uses  the finite-element  method
which reduces the  problem to the solution of a  system of coupled
integral  equations.  The  Cholesky method  is used  to solve  the
linear system of equations and the trapezoidal rule is applied for
the time integration.
top ]
5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Maxima of -
   300 nodes
   675 elements
    70 time-steps
top ]
6. TYPICAL RUNNING TIME:  90 minutes are required for a full-capacity
problem.
top ]
7. UNUSUAL FEATURES OF THE PROGRAM:
top ]
8. RELATED AND AUXILIARY PROGRAMS:  SAFE-CREEP (NESC Abstract 300)
top ]
9. STATUS
Package ID Status date Status
NESC0451/01 01-JUL-1976 Tested at NEADB
top ]
10. REFERENCES

Y. R. Rashid, Nonlinear Quasi-static Analysis of Two-
dimensional Concrete Structures,  Part I Theory, Part  II Computer
Program Manual, GA-9994, March 23, 1970.
             R.  D.  Browne,  Properties of  Concrete  in  Reactor
Vessels, Conference  on Prestressed  Concrete Pressure  Vessels at
Church House, Westminster, S.W. 1, 13-17 March 1967, The Institute
of Civil Engineers, London, pp. 131-151, 1968.
             NTRAN, I/O Routines  for Tape and Drum,  Excerpt from
UNIVAC 1107 FORTRAN IV Programmers Reference Manual, UP-3569, Rev.
1.
top ]
11. MACHINE REQUIREMENTS:  65K memory and 13 tapes
top ]
12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC0451/01 FORTRAN-IV
top ]
13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:   EXEC2.
top ]
14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

  CALL
TICKER refers to an 1108 system routine for logging job time used.
A substitute routine  will be required for use of  this program on
another machine.   SAFE-CRACK calls several plotting  routines not
included with the program.  These routines are proprietary and may
be dummied out.
top ]
15. NAME AND ESTABLISHMENT OF AUTHOR

                 Y. R. Rashid
                 General Atomic Company
                 P. O. Box 81608
                 San Diego, California  92138
top ]
16. MATERIAL AVAILABLE
NESC0451/01
File name File description Records
NESC0451_01.001 INFORMATION 11
NESC0451_01.002 SOURCE PROGRAM (F4) 3478
NESC0451_01.003 'NTRAN' ASSEMBLER ROUTINE 121
NESC0451_01.004 OVERLAY CARDS 12
NESC0451_01.005 DD CARDS FOR THE EXECUTION 19
NESC0451_01.006 SAMPLE PROBLEM INPUT DATA 92
NESC0451_01.007 SAMPLE PROBLEM PRINTED OUTPUT 1058
top ]
17. CATEGORIES
  • I. Deformation and Stress Distributions, Structural Analysis and Engineering Design Studies

Keywords: concretes, creep, elasticity, finite element method, mechanical structures, solids, stresses, two-dimensional.