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LOCK3491: Structural engineering matrices (unassembled)
Cross-cone vehicle structure

from set LOCKHEED, from the Harwell-Boeing Collection

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


Note: The previously available version of this matrix in Matrix Market format refects an assembly which differs from what the contributor intended and has been withdrawn. Please discard it if you have taken a copy. The Harwell-Boeing file remains, but requires proper interpretation.


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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
3491 x 3491, 13507 entries pattern symmetric positive definite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
160444 3416 78514 78514 0
Column Data Row Data
Average nonzeros per column : 46
Standard deviation : 13

indexnonzeros
longest3487 113
shortest2161 0

Average nonzeros per row : 46
Standard deviation : 13

indexnonzeros
longest3487 113
shortest2161 0

Bandwidths Profile Storage
lower1353 upper1353
average |i-j|1.1e+02 std.dev.98
minmaxave.std.dev.
lower bandwidth0 1352 1.7e+02 1.1e+02
upper bandwidth0 1352 1.7e+02 1.1e+02

Symmetric skyline storage requirement:602924

Heaviest diagonals
offset from main0 -1 1 -2 2 -3 3 -4 4 -5
nonzeros3416 3335 3335 3255 3255 3177 3177 3101 3101 3025
accumulated percent 2.13 4.21 6.29 8.3210.3412.3214.3016.2418.1720.05

Top 10 out of 911 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.


Set Information

Set LOCKHEED
Source: W.A. Loden, Lockheed Palo Alto Research Laboratory
Discipline:Finite-element calculations in structural engineering
Accession:Summer 1980


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Last change in this page: Wed Sep 22 13:33:44 US/Eastern 2004 [Comments: ]