Janna/Hook_1498
3D model of a steel hook with tetrahedral finite elements
Name 
Hook_1498 
Group 
Janna 
Matrix ID 
2546 
Num Rows

1,498,023 
Num Cols

1,498,023 
Nonzeros

59,374,451 
Pattern Entries

60,917,445 
Kind

Structural Problem 
Symmetric

Yes 
Date

2011 
Author

C. Janna, M. Ferronato 
Editor

T. Davis 
Structural Rank 
1,498,023 
Structural Rank Full 
true 
Num Dmperm Blocks

30,001 
Strongly Connect Components

30,001 
Num Explicit Zeros

1,542,994 
Pattern Symmetry

100% 
Numeric Symmetry

100% 
Cholesky Candidate

yes 
Positive Definite

yes 
Type

real 
Download 
MATLAB
Rutherford Boeing
Matrix Market

Notes 
Authors: Carlo Janna and Massimiliano Ferronato
Symmetric Positive Definite Matrix
# equations: 1498023
# nonzeroes: 60917445
Problem description: Structural problem
The matrix Hook_1498 is obtained from a 3D mechanical problem
discretizing a steel hook with tetrahedral Finite Elements. The
computational grid consists of regularly shaped elements with
three displacement unknowns associated to each node.
