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DWT 869: Everstine's collection

from set DWT, from the Harwell-Boeing Collection

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The finite element model that generated this matrix contains 869 nodes, 50 triangular axisymmetric elements, and 685 quadrilateral axisymmetric elements. The model is shown below. Plate and solid elements are outlined in black.

Image of model for dwt 869
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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
869 x 869, 7281 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
7285 869 3208 3208 0
Column Data Row Data
Average nonzeros per column : 8.4
Standard deviation : 1.7

indexnonzeros
longest278 14
shortest1 4

Average nonzeros per row : 8.4
Standard deviation : 1.7

indexnonzeros
longest278 14
shortest1 4

Bandwidths Profile Storage
lower587 upper587
average |i-j|15 std.dev.64
minmaxave.std.dev.
lower bandwidth1 587 23 77
upper bandwidth1 587 23 77

Symmetric skyline storage requirement:20397

Heaviest diagonals
offset from main0 -1 1 -11 11 -10 10 -9 9 -12
nonzeros869 772 772 451 451 358 358 320 320 311
accumulated percent11.9322.5333.1239.3145.5050.4255.3359.7364.1268.39

Top 10 out of 183 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: ]