esel,GET

本文介绍了如何使用Mapdl的ESEL命令在结构分析软件中选择线性杆件,基于属性值200进行筛选,并统计选中的杆件数量,以及获取最小和最大编号。

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统计杆件的数量

杆件属性值为 200 的 集合: [109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120]

首先,我们使用 mapdl.esel 命令选择具有特定属性值的线性杆件。以下是选择线性杆件属性值为 200 的示例代码:

mapdl.esel('S', 'REAL', '', 200)

接下来,我们可以使用 mapdl.get 命令来统计所选择的线性杆件的数量。以下是示例代码和结果:

ele_num = mapdl.get(entity='ELEM', entnum=0, item1='COUNT', it1num='')
print(ele_num)

运行结果为:

12.0

这表示有 12 个线性杆件被选择。

最后,我们可以使用 mapdl.get 命令分别获取所选择的线性杆件中的最小和最大编号。以下是示例代码和结果:

ele_num_min = mapdl.get(entity='ELEM', entnum=0, item1='NUM', it1num='MIN')
ele_num_max = mapdl.get(entity='ELEM', entnum=0, item1='NUM', it1num='MAX')

print(ele_num_min)
print(ele_num_max)

运行结果为:

109.0
120.0

这表示所选择的线性杆件中的最小编号是 109,最大编号是 120。

统计杆件的数量

“SMISC”,它用于获取在“ETABLE”命令中使用的序列号(“Snum”)处的可求和杂项数据的值

对于LINK180,查看它的杂项数据的值:

在这里插入图片描述

ESEL

``` finish /CLEAR /title,two_gears rm1=0.06 b1=0.08 z1=13 m=0.02 ha=0.45 c=0.3 z=z1 ang=360/z alphak=30 halfang=ang/2 r=m*z/2 rf=(z-2*ha-2*c)*m/2 ra=(z+2*ha)*m/2 r1=m*c pi=acos(-1) s=pi*m/2 *AFUN,DEG inva=tan(alphak)-pi*alphak/180 rb=r*COS(alphak) *AFUN,RAD N=12 *DIM,x,,N *DIM,y,,N *IF,rf,GT,rb,THEN af=ACOS(rb/rf) invaf=TAN(af)-af phi=s/r-2*(invaf-inva) x(1)=rf*COS(phi/2) y(1)=rf*SIN(phi/2) detar=(ra-rf)/(N-1) *DO,i,1,N-1 ri=rf+i*detar j=i+1 ai=ACOS(rb/ri) invai=TAN(ai)-ai phi=s/r-2*(invai-inva) x(j)=ri*COS(phi/2) y(j)=ri*SIN(phi/2) *ENDDO *ELSE phi=s/r+2*inva x(1)=rf*COS(phi/2) y(1)=rf*SIN(phi/2) x(2)=rb*COS(phi/2) y(2)=rb*SIN(phi/2) detar=(ra-rb)/(N-2) *DO,i,1,N-2 ri=rb+i*detar j=i+2 ai=ACOS(rb/ri) invai=TAN(ai)-ai phi=s/r-2*(invai-inva) x(j)=ri*COS(phi/2) y(j)=ri*SIN(phi/2) *ENDDO *ENDIF /PREP7 ET,1,PLANE182 ET,2,SOLID185 MP,EX,1,2.0e11 MP,PRXY,1,0.285 MP,DENS,1,7.85e3 fric_coef = 0.05 normal_stiff = 0.1 ET,3,TARGE170 ET,4,CONTA174 KEYOPT,4,9,0 KEYOPT,4,12,2 R,2 RMODIF,1,1, ,fric_coef,,, RMODIF,1,12,normal_stiff N,1,0,0,0 N,2,m*z1,0,0 et,5,mass21 keyopt,5,3,0 r,3,1e-6,1e-6,1e-6,1e-6,1e-6,1e-6 type,5 real,3 e,1 E,2 allsel,all real,0 *DO,i,1,N K,i,x(i),y(i) *ENDDO K,N+1,ra,0 LSTR,N,N+1 KSEL,S,KP,,1,N BSPLIN,ALL CYL4,,,rm1,0,rf,halfang ADELE,1 LDELE,3 KSEL,ALL LSTR,13,14 LSTR,15,1 LCOMB,3,6,0 LFILLT,7,2,R1,, LANG,3,18,90, KL,4,0.25,, LANG,8,20,90, LSBL,4,11,,DELETE,KEEP AL,3,1,2,9 AL,6,7,12,11,8,9 AL,13,5,10,11 TYPE,1 LESIZE,1,,,4,,,,,1 LESIZE,12,,,4,,,,,1 LESIZE,9,,,4,,,,,1 LESIZE,11,,,4,,,,,1 LESIZE,8,,,4,,,,,1 LESIZE,2,,,8,,,,,1 LESIZE,3,,,8,,,,,1 LESIZE,5,,,4,,,,,1 LESIZE,13,,,6,,,,,1 LESIZE,10,,,6,,,,,1 LESIZE,6,,,4,,,,,1 LESIZE,7,,,2,,,,,1 MSHAPE,0,2D MSHKEY,0 AMESH,1,3 CSYS,4 ARSYM,Y,ALL,,,,0,0 CSYS,1 AGEN,z,ALL, , , ,ang, , ,0 CSYS,0 ALLSEL,ALL NUMMRG,ALL,,,,LOW NUMCMP,ALL TYPE,2 MAT,1 real,0 ESIZE,0,5 VEXT,ALL,,,0,0,b1,0,0,0 VGEN,,ALL,,,,,-b1/2,,,1 ALLSEL,ALL ESEL,S,TYPE,,1 ACLEAR,ALL ALLSEL,ALL vsel,all csys,0 VGEN,2,ALL,,,1.5*m*z1,,,,,0 NUMMRG,ALL,,,,LOW NUMCMP,ALL csys,1 *AFUN,DEG asel,s,loc,x,(z-2*ha-2*c)*m/2,(z+2*ha)*m/2 *DO,i,1,2*z1 asel,u,loc,y,i*halfang *ENDDO asel,u,loc,x,(z-2*ha)*m/2 asel,u,loc,z,b1/2 asel,u,loc,z,-b1/2 asel,a,loc,x,(z+2*ha)*m/2 asel,a,loc,x,(z-2*ha-2*c)*m/2 nsla,s,1 CM,target1,node type,3 real,2 nsel,s,,,target1 esln,s,0 esurf allsel,all WPOFFS,1.5*m*z1, csys,4 WPSTYL,,,,,,1 asel,s,loc,x,(z-2*ha-2*c)*m/2,(z+2*ha)*m/2 *DO,i,1,2*z1 asel,u,loc,y,i*halfang *ENDDO asel,u,loc,x,(z-2*ha)*m/2 asel,u,loc,z,b1/2 asel,u,loc,z,-b1/2 asel,a,loc,x,(z+2*ha)*m/2 asel,a,loc,x,(z-2*ha-2*c)*m/2 *AFUN,RAD nsla,s,1 CM,contact1,node type,4 real,2 nsel,s,,,contact1 esln,s,0 esurf allsel,all vsel,s,loc,x,0,(z+2*ha)*m/2 WPSTYL,,,,,,0 VGEN,,ALL,,,-0.5*m*z1,,,,,1 ALLSEL,ALL NUMMRG,ALL,,,,LOW NUMCMP,ALL ET,10,MPC184 KEYOPT,10,1,0 WPOFFS,-0.5*m*z1, WPSTYL,,,,,,1 NSEL,S,loc,x,rm1 nsel,u,node,,2 CM,GEAR_SLAVE1,NODE CMSEL,S,GEAR_SLAVE1 *GET,Nnode1,NODE,,COUNT *GET,Nmin1,NODE,,NUM,MIN *DIM,SlaveNodes1,ARRAY,Nnode1 *DO,i,1,Nnode1 SlaveNodes1(i) = Nmin1 Nmin1 = NDNEXT(Nmin1) *ENDDO TYPE,10 *DO,i,1,Nnode1 E,2,SlaveNodes1(i) *ENDDO allsel,all CSYS,1 NSEL,S,loc,x,rm1 nsel,u,node,,1 CM,GEAR_SLAVE2,NODE CMSEL,S,GEAR_SLAVE2 *GET,Nnode2,NODE,,COUNT *GET,Nmin2,NODE,,NUM,MIN *DIM,SlaveNodes2,ARRAY,Nnode2 *DO,i,1,Nnode2 SlaveNodes2(i) = Nmin2 Nmin2 = NDNEXT(Nmin2) *ENDDO TYPE,10 *DO,i,1,Nnode2 E,1,SlaveNodes2(i) *ENDDO CSYS,0 allsel,all /SOLU ANTYPE,4 TRNOPT,FULL NLGEOM,ON TIME,0.1 AUTOTS,ON DELTIM,0.0005,0.0005,0.05 ERESX,no OUTRES,ALL,all *AFUN,RAD csys,0 D,2,ROTZ,0.8 nsel,s,node,,1 nsel,a,node,,2 D,ALL,UX,0,,,,UY,UZ ALLSEL,all SOLVE```求解时,仅中心节点2自身转动,其与内孔节点建立的刚性梁单元并未随之运动
03-27
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