Harwell-Boeing Sparse Matrix Collection


BCSSTRUC3: BCS Structural Engineering Matrices (eigenvalue problems)

BCSSTRUC3
Source: John Lewis, Boeing Computer Services, Seattle, WA
Discipline: Dynamic analyses in structural engineering
Accession: Summer 1984 to spring 1985

These generalized symmetric eigenproblems were extracted from various structural engineering packages such as GT-STRUDL, MCS/NASTRAN, and BCS ATLAS. They represent interesting problems encountered after the first set of structural engineering matrices were collected. Please refer to BCS Structural Engineering Matrices for more detail on these problems. Problems number 19, 20, and 22 have very poorly conditioned stiffness matrices. Problem 21 is a standard textbook problem with multiple eigenvalues.

Matrices in this set

BCSSTK19 : part of a suspension bridge, 817 x 817, 3835 nonzeros
BCSSTM19 : part of a suspension bridge, 817 x 817, 817 nonzeros
BCSSTK20 : frame within a suspension bridge, 485 x 485, 1810 nonzeros
BCSSTM20 : frame within a suspension bridge, 485 x 485, 485 nonzeros
BCSSTK21 : clamped square plate, 3600 x 3600, 15100 nonzeros
BCSSTM21 : clamped square plate, 3600 x 3600, 3600 nonzeros
BCSSTK22 : textile loom frame, 138 x 138, 417 nonzeros
BCSSTM22 : textile loom frame, 138 x 138, 138 nonzeros
BCSSTK23 : portion of a 3d globally trianglular bldg, 3134 x 3134, 24156 nonzeros
BCSSTM23 : portion of a 3d globall trianglular bldg, 3134 x 3134, 3134 nonzeros
BCSSTK24 : winter sports arena, 3562 x 3562, 81736 nonzeros
BCSSTM24 : winter sports arena, 3562 x 3562, 3562 nonzeros
BCSSTK25 : 76 story skyscraper, 15439 x 15439, 133840 nonzeros
BCSSTM25 : 76 story skyscraper, 3562 x 3562, 3562 nonzeros



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