DWT 221: Everstine's collection
Hull-tank region

from set DWT, from the Harwell-Boeing Collection

The finite element model that generated this matrix contains 221 nodes, 36 rod elements, 101 triangular plate elements, and 126 quadrilateral plate elements. The model is shown below.

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Download as

Compressed MatrixMarket format file: dwt__221.mtx.gz (1951 bytes)
Compressed Harwell-Boeing format file: dwt__221.psa.gz (1831 bytes)

Visualizations

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

Structure Plot

Matrix Statistics

Size	Type
221 x 221, 1629 entries	pattern symmetric indefinite
Nonzeros
total diagonal below diagonal above diagonal A-A' 1629 221 704 704 0
Column Data	Row Data
Average nonzeros per column : 7.4 Standard deviation : 1.6 index nonzeros longest 87 12 shortest 107 4	Average nonzeros per row : 7.4 Standard deviation : 1.6 index nonzeros longest 87 12 shortest 107 4
Bandwidths	Profile Storage
lower 188 upper 188 average |i-j| 33 std.dev. 54	min max ave. std.dev. lower bandwidth 1 188 46 60 upper bandwidth 1 188 46 60 Symmetric skyline storage requirement:10131
Heaviest diagonals
offset from main 0 -1 1 -2 2 -3 3 -5 5 -7 nonzeros 221 178 178 60 60 45 45 44 44 35 accumulated percent 13.57 24.49 35.42 39.10 42.79 45.55 48.31 51.01 53.71 55.86 Top 10 out of 271 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.

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Last change in this page: Wed Sep 22 13:33:34 US/Eastern 2004 [Comments: ]