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S2RMQ4M1: Finite element analysis of cylindrical shells
Cylindrical shell, uniform 30x30 quadrilateral mesh, stabilized MITC4 elements, R/t=100

from set CYLSHELL, from the Independent Sets and Generators
generated by MVMTLS

[Download] [Visualizations] [Matrix Statistics] [Generator Information]


The following estimates were supplied by the author.

Max eigenvalue = 6.8743398166879822E+04
Min eigenvalue = 3.8746327712024738E-04
Condition number = 1.774191E+08.

This matrix supercedes C2RMQ4M1.


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Visualizations

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Structure Plot City Plot
structure plot city plot


Matrix Statistics

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Size Type
5489 x 5489, 143300 entries real symmetric positive definite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
263351 5489 128931 128931 0
Column Data Row Data
Average nonzeros per column : 48
Standard deviation : 7.7

indexnonzeros
longest191 54
shortest5401 13

Average nonzeros per row : 48
Standard deviation : 7.7

indexnonzeros
longest191 54
shortest5401 13

Bandwidths Profile Storage
lower192 upper192
average |i-j|1.2e+02 std.dev.83
minmaxave.std.dev.
lower bandwidth0 191 1.8e+02 33
upper bandwidth0 191 1.8e+02 33

Symmetric skyline storage requirement:1001449

Heaviest diagonals
offset from main0 -4 4 -180 180 -5 5 -179 179 -181
nonzeros5489 5276 5276 5226 5226 5222 5222 5200 5200 5197
accumulated percent 2.08 4.09 6.09 8.0810.0612.0414.0316.0017.9719.95

Top 10 out of 235 nonvoid diagonals.
Conditioning
Frobenius norm1.1e+06 condition number (est.)1.15e+08
2-norm (est.)6.9e+04 diagonal dominanceno


Generator Information

Generator CYLSHELL
Source: Reijo Kouhia, Helsinki University of Technology, reijo.kouhia@hut.fi
Discipline:Structural mechanics
Accession:Summer 1997


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Last change in this page: Wed Sep 22 13:34:25 US/Eastern 2004 [Comments: ]