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
Descriptors:
Subject Categories:
- Computer Programming and Software
- Containers and Packaging
- Mechanics