EVALUATION OF A METHOD FOR UPDATING THE CHOLESKY FACTORIZATION OF A BANDED FINITE ELEMENTS STIFFNESS NATRIX

A new method for updating the Cholesky factorization of a banded matrix modified by a rank one matrix of the same band width is tested and evaluated. This technique is utilized to update the factorization of a stiffness matrix and thus is used to incorporate and evaluate modifications to an existing structural design. Computer time and cost analyses which compare the updating program to a similar finite elements program with no updating capabilities are included. The updating technique provides a substantial improvement in computational efficiency

• Supplemental Notes:
  • Presented by the New England Section of SNAME at their September 28, 1977 Meeting.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Gerber, D C
• Publication Date: 1977-10

Media Info

• Features: References;
• Pagination: 29 p.

Subject/Index Terms

• TRT Terms: Analysis; Costs; Finite element method; Information processing; Stiffness matrix; Structural design
• Uncontrolled Terms: Computer aided analysis; Cost analysis
• Old TRIS Terms: Stiffness matrices
• Subject Areas: Finance; Marine Transportation; Materials;

Filing Info

• Accession Number: 00173970
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: May 3 1978 12:00AM