BCSSTM11: BCS Structural Engineering Matrices (eigenvalue matrices) Ore car -- lumped mass
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From generalized eigenvalue problem Kx=(lambda)Mx. This is matrix M; matrix K is BCSSTK11 from BCSSTRUC1 set. BCSSTK11, BCSSTM11, BCSSTK12 and BCSSTM12 represent the lumped and consistent mass formulation for an ore car model. In both cases the consistent mass formulations lead to non-diagonal mass matrices. The eigenvalues from the two formulations of a model should be similar, but not necessarily equal.

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Size
Type
1473 x 1473, 1473 entries
real symmetric positive definite
Nonzeros
total diagonal below diagonal above diagonal A-A' 1473 1473 0 0 0

Column Data
Row Data
Average nonzeros per column : 1 Standard deviation : 0

index nonzeros longest 1 1 shortest 1 1

Average nonzeros per row : 1 Standard deviation : 0

index nonzeros longest 1 1 shortest 1 1

Bandwidths
Profile Storage
lower 1 upper 1 average |i-j| 0 std.dev. 0

min max ave. std.dev. lower bandwidth 1 1 1 0 upper bandwidth 1 1 1 0

Symmetric skyline storage requirement: 1473

Heaviest diagonals
offset from main 0
nonzeros 1473
accumulated percent 100.00

Top 1 out of 1 nonvoid diagonals.
Conditioning
Frobenius norm 3e+02 condition number (est.) 1.2e+05 2-norm (est.) 32 diagonal dominance yes

Set Information
Set BCSSTRUC1
Source:
John Lewis, Boeing Computer Services, Seattle, Washington, USA
Discipline: Dynamic analyses in structural engineering
Accession: Summer 1982

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Mathematical and Computational Sciences Division /
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National Institute of Standards and Technology .
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Last change in this page: Wed Sep 22 13:33:24 US/Eastern 2004
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