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1、/TITLE,Mechanicalanalysisoncutandcovertunnellining!确定分析标题/NOPR!菜单过滤设置/PMETH,OFF,0KEYW,PR_SET,1KEYW,PR_STRUC,1!保留结构分析部分菜单/COM,/COM,PreferencesforGUIfilteringhavebeensettodisplay:/COM,Structural/PREP7!进入前处理器ET,1,BEAM3!设置梁单元类型ET,2,COMBIN14!设置弹簧单元类型R,1,0.5,0.,0.5,,,,!设置梁单元几何
2、常数R,2,50e6,,,!设置弹簧单元几何常数MPTEMP,,,,,,,,!设置材料模型MPTEMP,1,0MPDATA,EX,1,,30e9!输入弹性模量MPDATA,PRXY,1,,0.2!输入泊松比MPTEMP,,,,,,,,!设置材料模型MPTEMP,1,0MPDATA,DENS,1,,2500!输入密度SAVE!保存数据库K,1,,,,!创建关键点K,2,4.7,,,K,3,4.7,5,,K,4,0,5,,LSTR,1,2!创建直线LSTR,2,3LSTR,3,4LSTR,4,1SAVE!保存数据，生成的直线如图4-7所示。
3、LESIZE,ALL,0.5,,,,1,,,1,!设置单元大小，本次划分成0.5m长TYPE,1!设置将要创建单元的类型MAT,1!设置将要创建单元的材料REAL,1!设置将要创建单元的几何常数FLST,2,4,4,ORDE,2FITEM,2,1FITEM,2,-4LMESH,P51X!将所有直线划分单元/PNUM,KP,0!以下为显示单元编号和颜色/PNUM,ELEM,1/REPLOT!重新显示SAVEFLST,4,9,1,ORDE,2!选择要复制的节点数量和起始点FITEM,4,23FITEM,4,-31NGEN,2,100,P51
4、X,,,,1,,1,!复制生成新的节点，Y坐标增加1，节点号增加100FLST,4,9,1,ORDE,2FITEM,4,3FITEM,4,-11NGEN,2,100,P51X,,,,-1,,1,FLST,4,9,1,ORDE,2FITEM,4,13FITEM,4,-21NGEN,2,100,P51X,,,1,,,1,FLST,4,9,1,ORDE,2FITEM,4,32FITEM,4,-40NGEN,2,100,P51X,,,-1,,,1,FLST,4,1,1,ORDE,1FITEM,4,12NGEN,2,140,P51X,,,0.71
5、,0.71,,1,FLST,4,1,1,ORDE,1FITEM,4,2NGEN,2,152,P51X,,,0.71,-0.71,,1,FLST,4,1,1,ORDE,1FITEM,4,22NGEN,2,154,P51X,,,-0.71,0.71,,1,FLST,4,1,1,ORDE,1FITEM,4,1NGEN,2,176,P51X,,,-0.71,-0.71,,1,SAVETYPE,2!设置将要创建单元的类型MAT,1!设置将要创建单元的材料REAL,2!设置将要创建单元的几何常数FLST,2,2,1!选择要创建单元的两个节点FITE
6、M,2,12FITEM,2,152E,P51X!创建弹簧单元FLST,2,2,1FITEM,2,23FITEM,2,123E,P51X……!依次继续直到所有的弹簧单元创建完成FLST,2,2,1FITEM,2,2FITEM,2,154E,P51XFinish!返回MainMenu主菜单/SOL!进入求解器FLST,2,40,1,ORDE,10!选择要施加约束的节点FITEM,2,103FITEM,2,-111FITEM,2,113FITEM,2,-121FITEM,2,123FITEM,2,-140FITEM,2,152FITEM,2,
7、154FITEM,2,176FITEM,2,-177D,P51X,,,,,,UX,UY,,,,!在“Ux”和“Uy”两个方向的施加约束ACEL,0,10,0,!在Y方向施加重力加速度F,1,FY,41125!在节点上施加Y方向集中力F,2,FY,41125!在底边上施加力F,3,FY,82250F,4,FY,82250F,5,FY,82250F,6,FY,82250F,7,FY,82250F,8,FY,82250F,9,FY,82250F,10,FY,82250F,11,FY,82250F,12,FY,-32700!在顶边上施加力F,2
8、2,FY,-32700F,23,FY,-65400F,24,FY,-65400F,25,FY,-65400F,26,FY,-65400F,27,FY,-65400F,28,FY,-65400F,29,FY,
