DWT 607: Everstine's collection Wankel rotor
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The finite element model that generated this matrix contains 607 nodes, 212 triangular plate elements, and 482 quadrilateral plate elements. The model is shown below. Plate and solid elements are outlined in black.

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Size
Type
607 x 607, 5131 entries
pattern symmetric indefinite
Nonzeros
total diagonal below diagonal above diagonal A-A' 5131 607 2262 2262 0

Column Data
Row Data
Average nonzeros per column : 8.5 Standard deviation : 2.4

index nonzeros longest 218 14 shortest 1 4

Average nonzeros per row : 8.5 Standard deviation : 2.4

index nonzeros longest 218 14 shortest 1 4

Bandwidths
Profile Storage
lower 148 upper 148 average |i-j| 34 std.dev. 34

min max ave. std.dev. lower bandwidth 1 148 50 35 upper bandwidth 1 148 50 35

Symmetric skyline storage requirement: 30615

Heaviest diagonals
offset from main 0 -1 1 -33 33 -32 32 -34 34 -23
nonzeros 607 539 539 155 155 152 152 126 126 97
accumulated percent 11.83 22.33 32.84 35.86 38.88 41.84 44.81 47.26 49.72 51.61

Top 10 out of 205 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
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