| BCSSTRUC4 | |
|---|---|
| Source: | Andy Mera, Randy Cigel, and John Lewis, Boeing Computer Services, Seattle, Washington. |
| Discipline: | Dynamic analyses in structural engineering. |
| Accession: | Summer 1984 and spring 1986 |
These matrices have all been extracted from GT-STRUDL and MSC/NASTRAN. The first
two are generalized symmetric eigenproblems; the third is a linear equation
problem. Please refer to BCS Structural Engineering Matrices for more detail
on these problems.
BCSSTK26 and BCSSTM26 are from a vibration station. It is of interest
because the number of eigenvalues needed for the seismic analysis was
quite large - the lowest 197. The large number effectively defeats
sparse eigenvalue routines that do not shift, and stands as a real benchmark for
shifted algorithms.
BCSSTK26 : reactor containment
floor -- section, 1922 x 1922, 16129 nonzeros
BCSSTM26 : reactor containment
floor -- section, 1922 x 1922, 1922 nonzeros
BCSSTK27 : buckling problem ,
1224 x 1224, 28675 nonzeros
BCSSTM27 : matrix buckling problem,
1224 x 1224, 28675 nonzeros
BCSSTK28 : solid element model
(msc nastran), 4410 x 4410, 111717 nonzeros