BCSSTK09: BCS Structural Engineering Matrices (eigenvalue matrices)
Square plate clamped

from set BCSSTRUC1, from the Harwell-Boeing Collection

From generalized eigenvalue problem Kx=(lambda)Mx. This is matrix K; matrix M is BCSSTM09 from BCSSTRUC1 set.

Download as

Compressed MatrixMarket format file: bcsstk09.mtx.gz (39080 bytes)
Compressed Harwell-Boeing format file: bcsstk09.rsa.gz (15045 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 ] 426224 bytes

Matrix Statistics

Size	Type
1083 x 1083, 9760 entries	real symmetric positive definite
Nonzeros
total diagonal below diagonal above diagonal A-A' 18437 1083 8677 8677 0
Column Data	Row Data
Average nonzeros per column : 17 Standard deviation : 4.1 index nonzeros longest 61 23 shortest 3 6	Average nonzeros per row : 17 Standard deviation : 4.1 index nonzeros longest 61 23 shortest 3 6
Bandwidths	Profile Storage
lower 63 upper 63 average |i-j| 41 std.dev. 25	min max ave. std.dev. lower bandwidth 1 63 59 13 upper bandwidth 1 63 59 13 Symmetric skyline storage requirement:63706
Heaviest diagonals
offset from main 0 -57 -3 3 57 -60 -54 54 60 -1 nonzeros 1083 1026 1026 1026 1026 972 972 972 972 703 accumulated percent 5.87 11.44 17.00 22.57 28.13 33.41 38.68 43.95 49.22 53.03 Top 10 out of 31 nonvoid diagonals.
Conditioning
Frobenius norm 8.6e+08 condition number (est.) 3.1e+04 2-norm (est.) 6.8e+07 diagonal dominance no

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