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BCSSTM22: BCS Structural Engineering Matrices (eigenvalue problems)
Textile loom frame

from set BCSSTRUC3, from the Harwell-Boeing Collection

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From generalized eigenvalue problem Kx=(lambda)Mx. This is matrix M; matrix K is BCSSTK22 from BCSSTRUC3 set.

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[ VRML Version 2, gzipped ] 18078 bytes

Matrix Statistics

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Size Type
138 x 138, 138 entries real symmetric positive definite
totaldiagonalbelow diagonalabove diagonalA-A'
138 138 0 0 0
Column Data Row Data
Average nonzeros per column : 1
Standard deviation : 0

longest1 1
shortest1 1

Average nonzeros per row : 1
Standard deviation : 0

longest1 1
shortest1 1

Bandwidths Profile Storage
lower1 upper1
average |i-j|0
lower bandwidth1 1 1 0
upper bandwidth1 1 1 0

Symmetric skyline storage requirement:138

Heaviest diagonals
offset from main0
accumulated percent100.00

Top 1 out of 1 nonvoid diagonals.
Frobenius norm0.037 condition number (est.)9.4e+02
2-norm (est.)0.0097 diagonal dominanceyes

Set Information

Source: John Lewis, Boeing Computer Services, Seattle, WA
Discipline:Dynamic analyses in structural engineering
Accession:Summer 1984 to spring 1985

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Last change in this page: Wed Sep 22 13:33:26 US/Eastern 2004 [Comments: ]