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MJFaber铜虫 (初入文坛)
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[求助]
ANSYS 出现错误，求大神指教。 已有1人参与
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Element 13179 (type = 3, PLANE183) (and maybe other elements) has become highly distorted. Excessive distortion of elements is usually a symptom indicating the need for corrective action elsewhere. Try incrementing the load more slowly (increase the number of substeps or decrease the time step size). You may need to improve your mesh to obtain elements with better aspect ratios. Also consider the behavior of materials, contact pairs, and/or constraint equations. If this message appears in the first iteration of first substep, be sure to perform element shape checking. 下面附件是部分模型图和GUI操作的代码。 代码拷出来复制不知道能不能全。 /PREP7 !* ET,1,PLANE183 !* ET,2,PLANE183 !* ET,3,PLANE183 !* KEYOPT,1,1,0 KEYOPT,1,3,1 KEYOPT,1,6,0 !* KEYOPT,2,1,0 KEYOPT,2,3,1 KEYOPT,2,6,0 !* KEYOPT,3,1,0 KEYOPT,3,3,1 KEYOPT,3,6,0 !* !* MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,EX,1,,3.5e11 MPDATA,PRXY,1,,0.3 MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,DENS,1,,3980 MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,EX,2,,3.5e10 MPDATA,PRXY,2,,0.3 TB,BKIN,2,1,2,1 TBTEMP,0 TBDATA,,1.5e8,5e7,,,, MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,EX,3,,1.1e11 MPDATA,PRXY,3,,0.3 TB,BKIN,3,1,2,1 TBTEMP,0 TBDATA,,2.8e8,1.15e9,,,, !* *SET,r1,0.25e-3 *SET,r2,0.10e-3 *SET,t,0.25e-3 BLC4, ,-t/2,r2,t BLC4,r2,-t/2,2e-3,t K, ,0,-t/2,0, K, ,r1,-t/2,0, K, ,0,-0.38e-3-t/2,0, K, ,1.65e-3,-0.38e-3-t/2,0, K, ,0,-0.68e-3-t/2,0, K, ,1.65e-3,-0.68e-3-t/2,0, K, ,0,-1.37e-3-t/2,0, K, ,1.25e-3,-1.37e-3-t/2,0, LSTR, 9, 10 LSTR, 9, 11 LSTR, 10, 12 LSTR, 11, 12 LSTR, 11, 13 LSTR, 12, 14 LSTR, 13, 14 LSTR, 13, 15 LSTR, 14, 16 LSTR, 15, 16 LFILLT,9,11,2.5e-5, , FLST,2,5,4 FITEM,2,9 FITEM,2,10 FITEM,2,12 FITEM,2,11 FITEM,2,19 AL,P51X FLST,2,4,4 FITEM,2,13 FITEM,2,12 FITEM,2,14 FITEM,2,15 AL,P51X FLST,2,4,4 FITEM,2,15 FITEM,2,16 FITEM,2,18 FITEM,2,17 AL,P51X wpro,,90.000000, FLST,2,2,5,ORDE,2 FITEM,2,1 FITEM,2,-2 ASBW,P51X wpoff,0,0,t/2+0.1e-3 ASBW, 3 wpoff,0.8e-3,0,0 wpro,,,90.000000 FLST,2,5,5,ORDE,5 FITEM,2,1 FITEM,2,4 FITEM,2,-5 FITEM,2,8 FITEM,2,-9 ASBW,P51X WPCSYS,-1,0 WPSTYLE,,,,,,,,0 FLST,5,7,5,ORDE,5 FITEM,5,2 FITEM,5,-3 FITEM,5,10 FITEM,5,-13 FITEM,5,18 CM,_Y,AREA ASEL, , , ,P51X CM,_Y1,AREA CMSEL,S,_Y !* CMSEL,S,_Y1 AATT, 1, , 1, 0, CMSEL,S,_Y CMDELE,_Y CMDELE,_Y1 !* FLST,5,2,5,ORDE,2 FITEM,5,6 FITEM,5,-7 CM,_Y,AREA ASEL, , , ,P51X CM,_Y1,AREA CMSEL,S,_Y !* CMSEL,S,_Y1 AATT, 2, , 2, 0, CMSEL,S,_Y CMDELE,_Y CMDELE,_Y1 !* FLST,5,4,5,ORDE,2 FITEM,5,14 FITEM,5,-17 CM,_Y,AREA ASEL, , , ,P51X CM,_Y1,AREA CMSEL,S,_Y !* CMSEL,S,_Y1 AATT, 3, , 3, 0, CMSEL,S,_Y CMDELE,_Y CMDELE,_Y1 !* FLST,2,5,5,ORDE,5 FITEM,2,2 FITEM,2,6 FITEM,2,-7 FITEM,2,14 FITEM,2,17 AESIZE,P51X,0.6e-5, FLST,2,1,5,ORDE,1 FITEM,2,18 AESIZE,P51X,1.2e-5, FLST,2,7,5,ORDE,5 FITEM,2,3 FITEM,2,10 FITEM,2,-13 FITEM,2,15 FITEM,2,-16 AESIZE,P51X,1.2e-5, MSHAPE,0,2D MSHKEY,0 !* FLST,5,13,5,ORDE,6 FITEM,5,2 FITEM,5,-3 FITEM,5,6 FITEM,5,-7 FITEM,5,10 FITEM,5,-18 CM,_Y,AREA ASEL, , , ,P51X CM,_Y1,AREA CHKMSH,'AREA' CMSEL,S,_Y !* AMESH,_Y1 !* CMDELE,_Y CMDELE,_Y1 CMDELE,_Y2 !* FLST,3,7,5,ORDE,5 FITEM,3,2 FITEM,3,-3 FITEM,3,10 FITEM,3,-13 FITEM,3,18 ARSYM,Y,P51X, , , ,0,0 !* !* /COM, CONTACT PAIR CREATION - START CM,_NODECM,NODE CM,_ELEMCM,ELEM CM,_KPCM,KP CM,_LINECM,LINE CM,_AREACM,AREA CM,_VOLUCM,VOLU /GSAV,cwz,gsav,,temp MP,MU,1,0.3 MAT,1 R,3 REAL,3 ET,4,169 ET,5,172 KEYOPT,5,9,0 KEYOPT,5,10,2 R,3, RMORE, RMORE,,0 RMORE,0 ! Generate the target surface LSEL,S,,,1 LSEL,A,,,39 CM,_TARGET,LINE TYPE,4 NSLL,S,1 ESLN,S,0 ESURF CMSEL,S,_ELEMCM ! Generate the contact surface LSEL,S,,,9 LSEL,A,,,19 LSEL,A,,,30 LSEL,A,,,47 CM,_CONTACT,LINE TYPE,5 NSLL,S,1 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 /COM, CONTACT PAIR CREATION - END !* !* /COM, CONTACT PAIR CREATION - START CM,_NODECM,NODE CM,_ELEMCM,ELEM CM,_KPCM,KP CM,_LINECM,LINE CM,_AREACM,AREA CM,_VOLUCM,VOLU /GSAV,cwz,gsav,,temp MP,MU,1,0.3 MAT,1 R,4 REAL,4 ET,6,169 ET,7,172 KEYOPT,7,9,0 KEYOPT,7,10,2 R,4, RMORE, RMORE,,0 RMORE,0 ! Generate the target surface LSEL,S,,,3 LSEL,A,,,46 CM,_TARGET,LINE TYPE,6 NSLL,S,1 ESLN,S,0 ESURF CMSEL,S,_ELEMCM ! Generate the contact surface LSEL,S,,,4 LSEL,A,,,5 LSEL,A,,,7 LSEL,A,,,60 CM,_CONTACT,LINE TYPE,7 NSLL,S,1 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 /COM, CONTACT PAIR CREATION - END /COM, CONTACT PAIR CREATION - START CM,_NODECM,NODE CM,_ELEMCM,ELEM CM,_KPCM,KP CM,_LINECM,LINE CM,_AREACM,AREA CM,_VOLUCM,VOLU /GSAV,cwz,gsav,,temp MP,MU,3,0.3 MAT,3 MP,EMIS,3,7.88860905221e-031 R,5 REAL,5 ET,8,169 ET,9,172 KEYOPT,9,9,0 KEYOPT,9,10,2 R,5, RMORE, RMORE,,0 RMORE,0 ! Generate the target surface LSEL,S,,,21 LSEL,A,,,23 CM,_TARGET,LINE TYPE,8 NSLL,S,1 ESLN,S,0 ESURF CMSEL,S,_ELEMCM ! Generate the contact surface LSEL,S,,,25 LSEL,A,,,29 CM,_CONTACT,LINE TYPE,9 NSLL,S,1 ESLN,S,0 ESURF ALLSEL ESEL,ALL ESEL,S,TYPE,,8 ESEL,A,TYPE,,9 ESEL,R,REAL,,5 /PSYMB,ESYS,1 /PNUM,TYPE,1 /NUM,1 EPLOT ESEL,ALL ESEL,S,TYPE,,8 ESEL,A,TYPE,,9 ESEL,R,REAL,,5 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 /COM, CONTACT PAIR CREATION - END /COM, CONTACT PAIR PROPERTIES - START KEYOPT,7,5,3 /COM, CONTACT PAIR PROPERTIES - END /COM, CONTACT PAIR PROPERTIES - START KEYOPT,5,5,3 /COM, CONTACT PAIR PROPERTIES - END /MREP,EPLOT EPLOT ALLSEL,ALL SAVE FINISH /SOL ANTYPE,0 FLST,2,10,4,ORDE,10 FITEM,2,2 FITEM,2,8 FITEM,2,13 FITEM,2,15 FITEM,2,-16 FITEM,2,20 FITEM,2,24 FITEM,2,49 FITEM,2,57 FITEM,2,61 DL,P51X, ,SYMM FLST,2,2,4,ORDE,2 FITEM,2,36 FITEM,2,38 !* /GO DL,P51X, ,ALL, FLST,2,2,4,ORDE,2 FITEM,2,56 FITEM,2,59 !* /GO DL,P51X, ,UY,-0.1e-3 ALLSEL,ALL NEQIT,100, NSUBST,100 NROP,UNSYM NLGEOM,ON SSTIF,OFF SOLVE SAVE  单元密度，这个单元大小小10倍的还是出错.png  接触，摩擦系数0.3.png  单元出错位置.png |
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MJFaber
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2楼2016-11-13 21:02:55
shgao20
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【答案】应助回帖
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出错信息是单元高度扭曲，可以考虑如下改进建议： 1 网格较粗 - 不过看来你的网格似乎已不算很粗了，不过，为了尽量避免网格扭曲，可以将该处的单元尽量划分为三角形单元，因为四边形单元比三角形单元更容易出现扭曲。 2 需要检查一下接触对是否有问题，可以在命令窗口发布命令： cncheck, auto 会出现一个对话框，显示接触对的主要情况和可能的问题。 3 你的求解子步数设置太少了，建议改为： NSUBST,100, 10000,1e8 4 在求解设置中增加以下两个命令： autots, on ! 打开自动时间步 kbc,0 ! 采用 Ramped 加载方式 |
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3楼2016-11-14 09:28:46
MJFaber
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我后来仔细想了一下，可能用双线性还是不太合理。变形过大，所以采用多线性随动更好一些。谢谢你的帮忙。也非常有用。这个怎么给金币，不太清楚，有事在外，没有电脑。现在只能用手机。等有电脑看看怎么给金币。 发自小木虫Android客户端 |
4楼2016-11-14 22:02:28
shgao20
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5楼2016-11-16 07:24:16
