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DWT 419: Everstine's collection
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from set DWT, from the Harwell-Boeing Collection

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The finite element model that generated this matrix contains 419 nodes, 145 beam elements, 180 triangular plate elements, and 307 quadrilateral plate elements. The model is shown below.

Image of model for dwt 419
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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
419 x 419, 3563 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
3563 419 1572 1572 0
Column Data Row Data
Average nonzeros per column : 8.5
Standard deviation : 1.7

indexnonzeros
longest185 13
shortest30 6

Average nonzeros per row : 8.5
Standard deviation : 1.7

indexnonzeros
longest185 13
shortest30 6

Bandwidths Profile Storage
lower357 upper357
average |i-j|74 std.dev.89
minmaxave.std.dev.
lower bandwidth1 357 96 1e+02
upper bandwidth1 357 96 1e+02

Symmetric skyline storage requirement:40145

Heaviest diagonals
offset from main0 -1 1 -211 211 -212 -210 210 212 -11
nonzeros419 303 303 126 126 72 72 72 72 56
accumulated percent11.7620.2628.7732.3035.8437.8639.8841.9043.9245.50

Top 10 out of 375 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.


Set Information

Set DWT
Source: Gordon Everstine, David W. Taylor Naval Ship Research and Development Center, Bethesda, MD, USA.
Discipline:Structural engineering
Accession:Summer 1980


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