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DWT 87: Everstine's collection
Tower

from set DWT, from the Harwell-Boeing Collection

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The finite element model that generated this matrix contains 87 nodes and 228 beam elements. The model is shown below. Beam and rod elements are drawn as tubes.

Image of model for dwt 87
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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
87 x 87, 541 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
541 87 227 227 0
Column Data Row Data
Average nonzeros per column : 6.2
Standard deviation : 2.3

indexnonzeros
longest67 13
shortest31 2

Average nonzeros per row : 6.2
Standard deviation : 2.3

indexnonzeros
longest67 13
shortest31 2

Bandwidths Profile Storage
lower64 upper64
average |i-j|16 std.dev.22
minmaxave.std.dev.
lower bandwidth1 64 27 24
upper bandwidth1 64 27 24

Symmetric skyline storage requirement:2336

Heaviest diagonals
offset from main0 -2 -1 1 2 -3 3 -61 61 -6
nonzeros87 36 36 36 36 24 24 16 16 11
accumulated percent16.0822.7429.3936.0442.7047.1351.5754.5357.4959.52

Top 10 out of 103 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: ]