有限元程序feap的实例，用户可以根据这些实例了解feap的算法。

feappv version 3.1 for general finite element analysis. http://www.ce.berkeley.edu/projects/feap/feappv/

FEAP is a finite element program for the solution of static and dynamic linear and nonlinear problems. The program is distributed as open source and is very useful for research, element, and architecture development.