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DWT 209: 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 209 nodes, 175 beam elements, 35 triangular plate elements, and 143 quadrilateral plate elements. The model is shown below. Plate and solid elements are outlined in black. Beam and rod elements are drawn as tubes.

Image of model for dwt 209
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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
209 x 209, 1743 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
1743 209 767 767 0
Column Data Row Data
Average nonzeros per column : 8.3
Standard deviation : 2.3

indexnonzeros
longest57 17
shortest52 4

Average nonzeros per row : 8.3
Standard deviation : 2.3

indexnonzeros
longest57 17
shortest52 4

Bandwidths Profile Storage
lower185 upper185
average |i-j|21 std.dev.32
minmaxave.std.dev.
lower bandwidth1 185 46 49
upper bandwidth1 185 46 49

Symmetric skyline storage requirement:9712

Heaviest diagonals
offset from main0 -1 1 -17 -2 2 17 -6 6 -15
nonzeros209 166 166 37 37 37 37 33 33 30
accumulated percent11.9921.5131.0433.1635.2837.4139.5341.4243.3245.04

Top 10 out of 211 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: ]