Finite element matrices from Pu Chen, Peking University.

14 symmetric positive-definite matrices (patterns only).

Except for pkustk07, pkustk08, and pkustk13, all problems
arose in civil engineering.  There is more than 1 degree
of freedom at each node in the finite-element mesh.

pkustk07 and pkustk08 are regular 3D meshes, with one side fixed
in the original FE models.

Problem  Description			     n		nnz in lower triangular
							part (incl. diagonal)
PKUSTK01 Beijing botanical exhibition hall   22,044    500,712
PKUSTK02 Feiyue twin tower building	     10,800    410,400
PKUSTK03 Dalian group silo		     63,336  1,596,876
PKUSTK04 Yunsan Plaza			     55,590  2,137,125
PKUSTK05 Cofferdam (reduced model)	     37,164  1,121,154
PKUSTK06 Cofferdam (reduced model)	     43,164  1,307,466
PKUSTK07 Cubic 21 nodes solid, 10x10x10 mesh 16,860  1,217,832
PKUSTK08 Cubic 21 nodes solid, 11x11x11 mesh 22,209  1,624,440
PKUSTK09 Group silo			     33,960    808,800
PKUSTK10 4 tower silo			     80,676  2,194,830
PKUSTK11 Cofferdam (full size)		     87,804  2,652,858
PKUSTK12 Jijian Plaza, tall building	     94,653  3,803,485
PKUSTK13 Machine element, 21 nodes solid     94,893  3,355,860
PKUSTK14 Tall building			    151,926  7,494,215

Permanent address:

Pu Chen, Dr.-Ing.
Dept of Mechanics and Engineering
Peking University
Beijing 100871, China
e-mail: chenpu :at the domain: pku.edu.cn

Currently address:

Pu Chen, Dr.-Ing.
Dept of Civil Engineering
The University of Akron
Akron, OH 44325-3905
USA
e-mail: chenpu :at the domain: pku.edu.cn