Accession Number:

AD0768721

Title:

Stiffness Matrix Reduction for Large Structural Systems Using Cholesky Decomposition.

Descriptive Note:

Interim rept.,

Corporate Author:

ARMY CONSTRUCTION ENGINEERING RESEARCH LAB CHAMPAIGN ILL

Personal Author(s):

Report Date:

1973-10-01

Pagination or Media Count:

29.0

Abstract:

Using a method similar to that proposed by Rosen and Rubinstein, a computer program was written to reduce the stiffness matrix of a multi-degree of freedom system down to an equivalent stiffness matrix involving a smaller number of degrees of freedom. Since this method uses Cholesky decomposition instead of the more common matrix inversion, it is useful for substructure problems in which a large number of degrees of freedom are to be condensed and eliminated. The computer program in Appendix B is most efficient when used for a large degree of freedom system with a sparse stiffness matrix. An example problem is explained in Appendix C to demonstrate the use of the program. Author

Subject Categories:

  • Computer Programming and Software
  • Containers and Packaging
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE