http://s16/mw690/002B1i7lgy6RIfRK5A34f&690

http://s10/mw690/002B1i7lgy6RIfRNwE199&690
Please note that in the local z-direction, the maximum size length is 0.4. FLAC3D densifies the
maximum length in this direction to be 1/3 (≤ 0.4), so that the corresponding dividing segment
(3, in this case) is an integer no less than the ratio of the original length (1.0, in this case) to
the maximum length (0.4, in this case).(在这里需要注意的是，在局部坐标系z轴方向上单元体最大尺寸想要设为0.4m。flac3d软件在z方向上加密使单元体最大尺寸为1/3（小于0.4)m，所以每个单元体对应的划分的个数为3，这是一个整数，这个整数不小于1/0.4，其中1m为原先单元体长度尺寸，0.4是想要划分的单元体长度，可见1/0.4不是一个整数，而是等于2.5，由于在z方向上只能划分为整数个，所以3大于等于2.5，所以每个单元体在z方向上划分为了3个。）   The ATTACH command in this example is used to attach
faces of sub-grids together rigidly to form a single grid. Always use the ATTACH command after
the GENERATE zone densify command if there are different numbers of gridpoints along faces of
different zones.

;**************************************************************************

gen zone densify local maxlength 0.5 0.5 0.5 range z 2 4

http://s6/mw690/002B1i7lgy6RIg7yljDf5&690
;*******************************************************************

gen zone densify local maxlength 0.5 0.5 2 range z 2 4

http://s11/mw690/002B1i7lgy6RIgsiL3A4a&690