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starkyu新蟲 (初入文壇)
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[求助]
[求助]用ANSYS耦合平面出現(xiàn)的錯誤~設置了周期對稱的節(jié)點還能再進行平面耦合約束么？
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對螺栓法蘭連接系統(tǒng)進行分析，設置的是周期對稱邊界條件，考慮螺栓的預緊力，其余的邊界條件是想在法蘭一端進行軸向約束，另一端進行一個平面耦合Y方向的約束，但是每次以計算就會出現(xiàn)如下錯誤： *** ERROR *** CP = 91.885 TIME= 20:02:29 Constraint equation 940 has node 1 = 1898 degree of freedom = UY which is also a slave in coupled set 1. *** ERROR *** CP = 91.994 TIME= 20:02:30 Degree of freedom UY at node 2312 is both in constraint equation 940 and a slave degree of freedom of coupled set 1, which may cause a problem. Please replace the CP,1,UY,1896,...,2312,..., command with the CE,next,0.0,2312,UY,-1.0,1896,UY,1.0 command. 已經(jīng)糾結(jié)了好多天，實在不知道要怎么解決，求大神幫忙~~ |
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【答案】應助回帖
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感謝參與，應助指數(shù) +1
starkyu: 金幣+10, ★★★很有幫助, 難得有人回答 去研究一下 謝謝了~ 2013-10-25 15:34:44
感謝參與，應助指數(shù) +1
starkyu: 金幣+10, ★★★很有幫助, 難得有人回答 去研究一下 謝謝了~ 2013-10-25 15:34:44
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我這里有一個實例你看一下《螺栓預緊法蘭盤襯墊分析》 /FILNAME,Ring Flange,0 /PREP7 H1=0.01 !法蘭盤1的厚度 H2=0.002 !襯墊厚度 H3=0.01 !法蘭盤2的厚度 H4=0.008 !螺帽的厚度 R1=0.05 !法蘭盤內(nèi)半徑 R2=0.08 !法蘭盤外半徑 R3=(R2-R1)/2+R1 !螺栓中心位置 R4=0.5*(R2-R1)/2!螺栓半徑 R5=0.7*(R2-R1)/2!螺帽半徑 ET,1,186 ET,2,194 MP,EX,1,1.05E11 MP,NUXY,1,0.3 TB,GASKET,2,,13,COMP !材料壓縮曲線 TBPT,,0.508000E-04, 0.161226E+07 TBPT,,0.101600E-03, 0.520884E+07 TBPT,,0.152400E-03, 0.113134E+08 TBPT,,0.203200E-03, 0.200499E+08 TBPT,,0.254000E-03, 0.259960E+08 TBPT,,0.304800E-03, 0.290345E+08 TBPT,,0.355600E-03, 0.357453E+08 TBPT,,0.406400E-03, 0.440064E+08 TBPT,,0.457200E-03, 0.563189E+08 TBPT,,0.508000E-03, 0.748254E+08 TBPT,,0.558800E-03, 0.967287E+08 TBPT,,0.609600E-03, 0.129001E+09 TBPT,,0.683260E-03, 0.157147E+09 TB,GASKET,2,,5,LUNL !定義襯墊的線性卸載曲線 TBPT,,0.152400E-03, 2.430000E+11 TBPT,,0.304800E-03, 3.565000E+11 TBPT,,0.406400E-03, 5.923000E+11 TBPT,,0.558800E-03, 1.088000E+12 TBPT,,0.683260E-03, 1.490000E+12 CYLIND,R1,R2,0,H1,0,360 !定義圓柱體 CYLIND,R1,R2,H1,H1+H2,0,360 !定義圓柱體 CYLIND,R1,R2,H1+H2,H1+H2+H3,0,360!定義圓柱體 NUMMRG,ALL !合并所有實體 CYLIND,R4,0,0,H1+H2+H3,0,360, !定義圓柱體 VGEN,,4,,,R3,,,,,1 !移動圓柱體 CSYS,1 !激活總體柱坐標系 !復制圓柱體 VGEN,2,4,,,,90,,,0 VGEN,2,4,,,,180,,,0 VGEN,2,4,,,,270,,,0 !把圓柱體從法蘭盤中減去 FLST,2,3,6,ORDE,2 FITEM,2,1 FITEM,2,-3 VSBV,P51X,4 FLST,2,3,6,ORDE,2 FITEM,2,8 FITEM,2,-10 VSBV,P51X,5 FLST,2,3,6,ORDE,2 FITEM,2,1 FITEM,2,-3 VSBV,P51X,6 FLST,2,3,6,ORDE,3 FITEM,2,4 FITEM,2,-5 FITEM,2,8 VSBV,P51X,7 !定義圓柱體 CYLIND,R4*0.95,0,0,H1+H2+H3,0,360 CYLIND,R5,0,H1+H2+H3,H1+H2+H3+H4,0,360 CYLIND,R5,0,-H4,0,0,360 !把體4,5和6進行加運算 VADD,4,5,6 CSYS,0 !激活總體笛卡爾坐標系 VGEN,,7,,,R3,,,,,1 CSYS,1 VGEN,2,7,,,,90,,,0 VGEN,2,7,,,,180,,,0 VGEN,2,7,,,,270,,,0 !設置總體單元尺寸 ESIZE,0.005 TYPE,1 MAT,1 VSWEEP,2 !劃分襯墊單元 TYPE,2 MAT,2 IMESH,AREA,19,25, ,0,0,H2,0.0005 TYPE,1 MAT,1 VSWEEP,3 MSHKEY,0 MSHAPE,1,3D VMESH,4 VMESH,5 VMESH,6 VMESH,7 !定義預拉伸單元 PSMESH, ,P1, ,VOLU,4, 0,Z,(H1+H2+H3)/2,,,,, PSMESH, ,P2, ,VOLU,5, 0,Z,(H1+H2+H3)/2, , , , , PSMESH, ,P3, ,VOLU,6, 0,Z,(H1+H2+H3)/2, , , , , PSMESH, ,P4, ,VOLU,7, 0,Z,(H1+H2+H3)/2, , , , , !定義接觸單元節(jié)點組1 ASEL,S, , ,48 NSLA,S,1 CM,CN1,NODE ALLSEL,ALL !定義接觸單元節(jié)點組2 ASEL,S, , ,28 NSLA,S,1 CM,CN2,NODE ALLSEL,ALL !定義目標單元節(jié)點組1 FLST,5,4,5,ORDE,4 FITEM,5,50 FITEM,5,54 FITEM,5,64 FITEM,5,74 ASEL,S, , ,P51X NSEL,ALL NSLA,S,1 CM,TN1,NODE ALLSEL,ALL !定義目標單元節(jié)點組1 FLST,5,4,5,ORDE,4 FITEM,5,70 FITEM,5,80 FITEM,5,53 FITEM,5,60 ASEL,S, , ,P51X NSEL,ALL NSLA,S,1 CM,TN2,NODE ALLSEL,ALL !通過接觸向?qū)Ы⒔佑|對 CM,_NODECM,NODE CM,_ELEMCM,ELEM CM,_KPCM,KP CM,_LINECM,LINE CM,_AREACM,AREA CM,_VOLUCM,VOLU /GSAV,cwz,gsav,,temp MP,MU,1,0.25 MAT,1 MP,EMIS,1,7.88860905221e-031 R,3 REAL,3 ET,4,170 ET,5,174 R,3,,,1.0,0.1,0, RMORE,,,1.0E20,0.0,1.0, RMORE,0.0,0,1.0,,1.0,0.5 RMORE,0,1.0,1.0,0.0,,1.0 KEYOPT,5,4,0 KEYOPT,5,5,0 NROPT,UNSYM KEYOPT,5,7,0 KEYOPT,5,8,0 KEYOPT,5,9,0 KEYOPT,5,10,2 KEYOPT,5,11,0 KEYOPT,5,12,0 KEYOPT,5,2,0 KEYOPT,4,5,0 ! Generate the target surface NSEL,S,,,TN1 CM,_TARGET,NODE TYPE,4 ESLN,S,0 ESURF CMSEL,S,_ELEMCM ! Generate the contact surface NSEL,S,,,CN1 CM,_CONTACT,NODE TYPE,5 ESLN,S,0 ESURF ALLSEL ESEL,ALL ESEL,S,TYPE,,4 ESEL,A,TYPE,,5 ESEL,R,REAL,,3 /PSYMB,ESYS,1 /PNUM,TYPE,1 /NUM,1 EPLOT ESEL,ALL ESEL,S,TYPE,,4 ESEL,A,TYPE,,5 ESEL,R,REAL,,3 CMSEL,A,_NODECM CMDEL,_NODECM CMSEL,A,_ELEMCM CMDEL,_ELEMCM CMSEL,S,_KPCM CMDEL,_KPCM CMSEL,S,_LINECM CMDEL,_LINECM CMSEL,S,_AREACM CMDEL,_AREACM CMSEL,S,_VOLUCM CMDEL,_VOLUCM /GRES,cwz,gsav CMDEL,_TARGET CMDEL,_CONTACT CM,_NODECM,NODE CM,_ELEMCM,ELEM CM,_KPCM,KP CM,_LINECM,LINE CM,_AREACM,AREA CM,_VOLUCM,VOLU /GSAV,cwz,gsav,,temp MP,MU,1,0.25 MAT,1 MP,EMIS,1,7.88860905221e-031 R,4 REAL,4 ET,6,170 ET,7,174 R,4,,,1.0,0.1,0, RMORE,,,1.0E20,0.0,1.0, RMORE,0.0,0,1.0,,1.0,0.5 RMORE,0,1.0,1.0,0.0,,1.0 KEYOPT,7,4,0 KEYOPT,7,5,0 NROPT,UNSYM KEYOPT,7,7,0 KEYOPT,7,8,0 KEYOPT,7,9,0 KEYOPT,7,10,2 KEYOPT,7,11,0 KEYOPT,7,12,0 KEYOPT,7,2,0 KEYOPT,6,5,0 ! Generate the target surface NSEL,S,,,TN2 CM,_TARGET,NODE TYPE,6 ESLN,S,0 ESURF CMSEL,S,_ELEMCM ! Generate the contact surface NSEL,S,,,CN2 CM,_CONTACT,NODE TYPE,7 ESLN,S,0 ESURF ALLSEL ESEL,ALL ESEL,S,TYPE,,6 ESEL,A,TYPE,,7 ESEL,R,REAL,,4 /PSYMB,ESYS,1 /PNUM,TYPE,1 /NUM,1 EPLOT ESEL,ALL ESEL,S,TYPE,,6 ESEL,A,TYPE,,7 ESEL,R,REAL,,4 CMSEL,A,_NODECM CMDEL,_NODECM CMSEL,A,_ELEMCM CMDEL,_ELEMCM CMSEL,S,_KPCM CMDEL,_KPCM CMSEL,S,_LINECM CMDEL,_LINECM CMSEL,S,_AREACM CMDEL,_AREACM CMSEL,S,_VOLUCM CMDEL,_VOLUCM /GRES,cwz,gsav CMDEL,_TARGET CMDEL,_CONTACT /SOL CSYS,1 !激活總體柱坐標系 NSEL,S,LOC,X,R1 !選擇法蘭盤內(nèi)空上的所有節(jié)點 /PREP7 NROTAT,ALL !把選中的節(jié)點轉(zhuǎn)到總體柱坐標系中 /SOL D,ALL,,,,,,UX,,,,, !約束法蘭盤內(nèi)徑的徑向位移 D,ALL,,,,,,UY,,,,, !約束法蘭盤內(nèi)徑的周向位移 ALLSEL,ALL CSYS,0 !施加預拉伸力 *DEL,_z *DIM,_z,ARRAY,1,1,1 *SET,_z(1) ,1 *DO,_z1,1,1 SLOAD,_z(_z1),9,LOCK,FORC, 1000,1,2 *ENDDO *DEL,_z *DIM,_z,ARRAY,1,1,1 *SET,_z(1) ,2 *DO,_z1,1,1 SLOAD,_z(_z1),9,LOCK,FORC, 1000,1,2 *ENDDO *DEL,_z *DIM,_z,ARRAY,1,1,1 *SET,_z(1) ,3 *DO,_z1,1,1 SLOAD,_z(_z1),9,LOCK,FORC, 1000,1,2 *ENDDO *DEL,_z *DIM,_z,ARRAY,1,1,1 *SET,_z(1) ,4 *DO,_z1,1,1 SLOAD,_z(_z1),9,LOCK,FORC, 1000,1,2 *ENDDO SOLVE |
2樓2013-10-25 10:29:37
3樓2013-10-26 08:24:55
starkyu
新蟲 (初入文壇)
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- 蟲號: 1887945
- 注冊: 2012-07-11
- 專業(yè): 機械結(jié)構(gòu)強度學
4樓2013-10-27 09:16:56
5樓2013-10-28 17:38:08
starkyu
新蟲 (初入文壇)
- 應助: 0 (幼兒園)
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- 蟲號: 1887945
- 注冊: 2012-07-11
- 專業(yè): 機械結(jié)構(gòu)強度學
6樓2013-10-29 12:46:35
7樓2013-10-29 17:50:33
starkyu
新蟲 (初入文壇)
- 應助: 0 (幼兒園)
- 金幣: 178.5
- 帖子: 6
- 在線: 19.5小時
- 蟲號: 1887945
- 注冊: 2012-07-11
- 專業(yè): 機械結(jié)構(gòu)強度學
8樓2013-10-29 22:17:05
9樓2013-10-30 07:30:21
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