fem2d_50line
代码说明：
一个50行的Matlab有限元程序（二维线弹性问题），执行fem2d.m即可。(A 50-line Matlab finite element program (two-dimensional linear elastic problem), Executive fem2d.m .)
文件列表：
fem2d_50line
............\coordinates.dat,475,1999-03-02
............\dirichlet.dat,375,1999-03-02
............\elements3.dat,351,1999-03-02
............\elements4.dat,440,1999-03-02
............\f.m,562,1999-03-02
............\fem2d.m,4140,1999-03-02
............\g.m,571,1999-03-02
............\neumann.dat,306,1999-03-02
............\show.m,1257,1999-03-02
............\stima3.m,870,1999-02-15
............\stima4.m,824,1999-02-15
............\u_d.m,603,1999-03-02
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