HB/bcsstk31

STIFFNESS MATRIX FOR AUTOMOBILE COMPONENT (MSC NASTRAN) - PATTERN ONLY
Name bcsstk31
Group HB
Matrix ID 53
Num Rows 35,588
Num Cols 35,588
Nonzeros 1,181,416
Pattern Entries 1,181,416
Kind Structural Problem
Symmetric Yes
Date 1986
Author R. Cigel, R. Grimes, J. Lewis, E. Meyer
Editor I. Duff, R. Grimes, J. Lewis
Structural Rank 35,588
Structural Rank Full true
Num Dmperm Blocks 2
Strongly Connect Components 2
Num Explicit Zeros 0
Pattern Symmetry 100%
Numeric Symmetry 100%
Cholesky Candidate yes
Positive Definite no
Type binary
SVD Statistics
Matrix Norm 5.796906e+01
Minimum Singular Value 3.987424e-234
Condition Number 1.453797e+235
Rank 16,803
sprank(A)-rank(A) 18,785
Null Space Dimension 18,785
Full Numerical Rank? no
Download Singular Values MATLAB