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BCSSTM20: BCS Structural Engineering Matrices (eigenvalue problems)
Frame within a suspension bridge

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 BCSSTK20 from BCSSTRUC3 set.

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Structure Plot City Plot
structure plot city plot
3D Interactive City Plot

[ VRML Version 2, gzipped ] 61464 bytes

Matrix Statistics

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Size Type
485 x 485, 485 entries real symmetric positive definite
totaldiagonalbelow diagonalabove diagonalA-A'
485 485 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:485

Heaviest diagonals
offset from main0
accumulated percent100.00

Top 1 out of 1 nonvoid diagonals.
Frobenius norm1e+08 condition number (est.)2.6e+05
2-norm (est.)4.8e+07 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: ]