BCSSTM19: BCS Structural Engineering Matrices (eigenvalue problems)
Part of a suspension bridge

from set BCSSTRUC3, from the Harwell-Boeing Collection

From generalized eigenvalue problem Kx=(lambda)Mx. This is matrix M; matrix K is BCSSTK19 from BCSSTRUC3 set.

Download as

Compressed MatrixMarket format file: bcsstm19.mtx.gz (6691 bytes)
Compressed Harwell-Boeing format file: bcsstm19.rsa.gz (7176 bytes)

Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot	City Plot
	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 100502 bytes

Matrix Statistics

Size	Type
817 x 817, 817 entries	real symmetric positive definite
Nonzeros
total diagonal below diagonal above diagonal A-A' 817 817 0 0 0
Column Data	Row Data
Average nonzeros per column : 1 Standard deviation : 0 index nonzeros longest 1 1 shortest 1 1	Average nonzeros per row : 1 Standard deviation : 0 index nonzeros longest 1 1 shortest 1 1
Bandwidths	Profile Storage
lower 1 upper 1 average |i-j| 0 std.dev. 0	min max ave. std.dev. lower bandwidth 1 1 1 0 upper bandwidth 1 1 1 0 Symmetric skyline storage requirement:817
Heaviest diagonals
offset from main 0 nonzeros 817 accumulated percent 100.00 Top 1 out of 1 nonvoid diagonals.
Conditioning
Frobenius norm 1.1e+08 condition number (est.) 2.3e+05 2-norm (est.) 4e+07 diagonal dominance yes

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