BCSSTK05: BCS Structural Engineering Matrices (eigenvalue matrices)
Transmission tower

from set BCSSTRUC1, from the Harwell-Boeing Collection

From generalized eigenvalue problem Kx=(lambda)Mx. This is matrix K; matrix M is BCSSTM05 from BCSSTRUC1 set.

Download as

Compressed MatrixMarket format file: bcsstk05.mtx.gz (6708 bytes)
Compressed Harwell-Boeing format file: bcsstk05.rsa.gz (5269 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 ] 307460 bytes

Matrix Statistics

Size	Type
153 x 153, 1288 entries	real symmetric positive definite
Nonzeros
total diagonal below diagonal above diagonal A-A' 2423 153 1135 1135 0
Column Data	Row Data
Average nonzeros per column : 16 Standard deviation : 5.1 index nonzeros longest 133 24 shortest 5 4	Average nonzeros per row : 16 Standard deviation : 5.1 index nonzeros longest 133 24 shortest 5 4
Bandwidths	Profile Storage
lower 29 upper 29 average |i-j| 10 std.dev. 6.5	min max ave. std.dev. lower bandwidth 1 29 17 5.6 upper bandwidth 1 29 17 5.6 Symmetric skyline storage requirement:2602
Heaviest diagonals
offset from main 0 -1 1 -12 12 -15 15 -13 13 -11 nonzeros 153 111 111 96 96 88 88 82 82 78 accumulated percent 6.31 10.90 15.48 19.44 23.40 27.03 30.66 34.05 37.43 40.65 Top 10 out of 57 nonvoid diagonals.
Conditioning
Frobenius norm 2.2e+07 condition number (est.) 3.5e+04 2-norm (est.) 6.2e+06 diagonal dominance no

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Last change in this page: Wed Sep 22 13:33:23 US/Eastern 2004 [Comments: ]