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DWT 66: Everstine's collection
Truss

from set DWT, from the Harwell-Boeing Collection

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


The finite element model that generated this matrix contains 66 nodes and 127 rod elements. The model is shown below. Beam and rod elements are drawn as tubes.

Image of model for dwt 66
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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
66 x 66, 320 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
320 66 127 127 0
Column Data Row Data
Average nonzeros per column : 4.8
Standard deviation : 0.64

indexnonzeros
longest28 6
shortest1 2

Average nonzeros per row : 4.8
Standard deviation : 0.64

indexnonzeros
longest28 6
shortest1 2

Bandwidths Profile Storage
lower45 upper45
average |i-j|6.6 std.dev.8.6
minmaxave.std.dev.
lower bandwidth1 45 9.7 9.6
upper bandwidth1 45 9.7 9.6

Symmetric skyline storage requirement:640

Heaviest diagonals
offset from main0 -1 1 -16 16 -15 15 -10 -9 9
nonzeros66 56 56 15 15 13 13 9 9 9
accumulated percent20.6238.1255.6260.3165.0069.0673.1275.9478.7581.56

Top 10 out of 41 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 13:33:33 US/Eastern 2004 [Comments: ]