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1、我现在有个问题：用beam188模拟梁和柱子，用solid45单元模拟基础。采用cerig命令连接两种单元。求解时总出错，请大侠帮忙看看。命令流如下：/filename,lianxi/units,si /prep7 et,1,beam188et,2,solid45sectype,1,beam,rectsecdata,0.55,0.55 sectype,2,beam,rectsecdata,0.25,0.55r,1mp,ex,1,2.8e10 mp,nuxy,1,0.2 mp,dens,1,
2、2500 mp,ex,2,3.0e10 mp,nuxy,2,0.2 mp,dens,2,2500 k,100,20,0,20k,1,0,0,0k,7,0,0,18kfill,1,7kgen,2,1,7,,6l,1,7l,8,14lsel,s,loc,z,0.01,18latt,1,1,1,,100,,1lesize,all,0.5 lmesh,all lsel,u,,,alll,2,9lgen,6,3,,,,,3latt,1,1,1,,100,,2lesize,all,0.5 lmes
3、h,all lsel,u,,,allsave!基础/pnum,volu,1block,-0.6,0.6,-0.6,0.6,-1.0,0 vgen,2,1,,,6block,0.6,5.4,-0.6,0.6,-1.0,0vglue,all!基础划分!Y方向1 vsel,s,loc,z,-1.0,-0.01vsel,r,loc,x,-0.6,0.6 vsel,r,loc,y,-0.6,0.6 vatt,2,,2aslvlslalesize,all,0.5 mshape,0,3Dmshkey,
4、1vmesh,all vsel,u,,,allallsel vsel,s,loc,z,-1.0,-0.01vsel,r,loc,x,5.4,6.6 vsel,r,loc,y,-0.6,0.6 vatt,2,,2aslvlslalesize,all,0.5 mshape,0,3Dmshkey,1vmesh,all vsel,u,,,allallsel vsel,s,loc,z,-1.0,0vsel,r,loc,x,0.6,5.4vsel,r,loc,y,-0.6,0.6 vatt,2,
5、,2aslvlslalesize,all,0.5 mshape,0,3Dmshkey,1vmesh,all vsel,u,,,allallsel /SOLantype,static nlgeom,on ! nropt,fulltime,1 nsub,50outres,all,last! asel,s,loc,z,-1.0da,all,allasel,s,loc,x,-0.6asel,a,loc,x,6.6da,all,ux da,all,uy asel,s,loc,y,-0.6a
6、sel,a,loc,y,0.6da,all,ux da,all,uyallsel,allACEL,0,0,9.8nsel,s,loc,z,0nsel,r,loc,x,-0.6,0.6nsel,r,loc,y,-0.6,0.6cerig,1,all,allnsel,s,loc,z,0nsel,r,loc,x,5.4,6.6nsel,r,loc,y,-0.6,0.6cerig,74,all,all!在梁上施加线荷载7000N/mlsel,s,loc,z,3lsel,a,loc,z,6lsel,a,lo
7、c,z,9lsel,a,loc,z,12 lsel,a,loc,z,15 allsel,below,line sfbeam,all,1,pres,7000 allsel,allsolve2009-1-520:18#4 lsa512助理工程师精华0积分12帖子31水位39技术分0状态离线我用cerig命令建的刚性区域，出现下面警告Constraintequationsmaynotbevalidforelementsthatundergolarge deflections.请问高手这个警告可以
8、忽略吗?ansys学习－beam188与189中的额外节点BEAM188和189是ANSYS从5.5版本开始起增加的新的梁单元，它的最大特点是支持梁截面形状显示，可以考虑剪切变形和翘曲，同时也支持大转动和大应变等非线性行为，而且也可以直接显示梁截面上的应力和变形。在用BEAM188和189建模时必须先定义截面形状，而且必须指定一个方向点，在形成的每个梁单元中都会生成一个方向节点（即额外节点），它是梁单元的组成部分，所以不能被删除。
