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DWT 1242: Everstine's collection
Sea chest

from set DWT, from the Harwell-Boeing Collection

[Download] [Visualizations] [Matrix Statistics] [Set Information]


The finite element model that generated this matrix contains 1264 nodes, 67 beam elements, 268 triangular plate elements, and 1024 quadrilateral plate elements. The model is shown below. Plate and solid elements are outlined in black.

Image of model for dwt 1242
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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
1242 x 1242, 10426 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
10426 1242 4592 4592 0
Column Data Row Data
Average nonzeros per column : 8.4
Standard deviation : 2

indexnonzeros
longest242 12
shortest1124 2

Average nonzeros per row : 8.4
Standard deviation : 2

indexnonzeros
longest242 12
shortest1124 2

Bandwidths Profile Storage
lower937 upper937
average |i-j|58 std.dev.1.5e+02
minmaxave.std.dev.
lower bandwidth1 937 90 1.8e+02
upper bandwidth1 937 90 1.8e+02

Symmetric skyline storage requirement:111430

Heaviest diagonals
offset from main0 -1 1 -23 23 -24 24 -25 25 -18
nonzeros1242 1089 1089 449 449 414 414 381 381 166
accumulated percent11.9122.3632.8037.1141.4245.3949.3653.0156.6758.26

Top 10 out of 803 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 13:33:35 US/Eastern 2004 [Comments: ]