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liangyuxin

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注册: 2013-11-30
性别: GG
专业: 光学

[求助] 网格划分问题，求高手指点

亲们，求助啊！！！！
我算的是桩土非线性接触问题，取1/4模型进行静力计算。用SOILD45退化的四面体单元就可以计算，但是精度不行，用solid187却无法计算，就是输入SOLVE之后没有反应也没有warning。solid92也能计算，但是不收收敛。求为什么SOLID187无法计算，且没有任何警告提醒。求高手指点迷津。
求原因，求指点。现附上命令流如下。
/PREP7
BLC4,,,10,10,-25
CYL4,,,0.30,,,,-15
VSBV,1,2
WPOFF,,,-2.5
VSBW,ALL
WPOFF,,,-10
VSBW,2
WPOFF,,,-1.4
VSBW,4
WPOFF,,,-1.1
VSBW,5

ET,1,187
ET,2,170
ET,3,174
KEYOPT,3,9,0
KEYOPT,3,12,2
MP,EX,1,3.0E10
MP,PRXY,1,0.2
MP,DENS,1,2400

MP,EX,2,1.33E8
MP,PRXY,2,0.2
MP,DENS,2,2143
TB,DP,2
TBDATA,,0,36,0

MP,EX,3,0.35E8
MP,PRXY,3,0.38
MP,DENS,3,1939
TB,DP,3
TBDATA,,27900,28,0

MP,EX,4,0.74E8
MP,PRXY,4,0.3
MP,DENS,4,1836
TB,DP,4
TBDATA,,16700,32,0

MP,EX,5,0.75E8
MP,PRXY,5,0.4
MP,DENS,5,2041
TB,DP,5
TBDATA,,16000,28,0

MP,MU,6,0.7
R,1
R,2
R,3
R,4
R,5
R,6

ALLSEL
VSEL,S,VOLU,,1
VATT,2,2,1
ALLSEL
VSEL,S,VOLU,,3
VATT,3,3,1
ALLSEL
VSEL,S,VOLU,,2
VATT,4,4,1
ALLSEL
VSEL,S,VOLU,,6
VATT,5,5,1
ALLSEL
VSEL,S,VOLU,,4
VATT,5,5,1

ALLSEL
ESIZE,1
LESIZE,26,,,15,0.3
LESIZE,27,,,15,0.3
LESIZE,20,,,15,0.3
LESIZE,21,,,15,0.3
LESIZE,37,,,15,0.3
LESIZE,38,,,15,0.3
LESIZE,47,,,15,0.3
LESIZE,48,,,15,0.3
LESIZE,55,,,15,3.3
LESIZE,54,,,15,3.3
LESIZE,28,,,15,0.3
LESIZE,17,,,4
LESIZE,19,,,4
LESIZE,36,,,4
LESIZE,46,,,4
LESIZE,16,,,4
LESIZE,23,,,3
LESIZE,24,,,3
LESIZE,18,,,18
LESIZE,15,,,18
LESIZE,34,,,70
LESIZE,35,,,70
LESIZE,44,,,10
LESIZE,45,,,10
LESIZE,52,,,8
LESIZE,53,,,8

VMESH,ALL

WPCSYS
CYL4,,,0.30,0,,90,-15
ALLSEL
VSEL,S,VOLU,,5
VATT,1,1,1

LESIZE,51,,,4
LESIZE,59,,,4
LESIZE,50,,,3
LESIZE,49,,,3
LESIZE,60,,,3
LESIZE,61,,,3
LESIZE,62,,,106
LESIZE,63,,,106
LESIZE,64,,,106
VMESH,5
ALLSEL,ALL
ASEL,S,,,30
ASEL,A,,,27
NSLA,S,1
REAL,6
TYPE,2
MAT,6
ESURF,ALL

ALLSEL,ALL
ASEL,S,,,5
ASEL,A,,,12
ASEL,A,,,17
ASEL,A,,,29
ASEL,A,,,11
NSLA,S,1
REAL,6
TYPE,3
ESURF,ALL

ASEL,S,LOC,X,0
ASEL,A,LOC,Y,0
DA,ALL,SYMM
ASEL,S,LOC,X,10
DA,ALL,ALL
ASEL,S,LOC,Y,10
DA,ALL,ALL
ASEL,S,LOC,Z,-25
DA,ALL,ALL

ASEL,S,,,28
SFA,ALL,1,PRES,8662
ALLSE,ALL

/SOLU
ANTYPE,STATIC
NLGEOM,ON
AUTOTS,ON
ACEL,,,9.8
TIME,1
NSUBST,100

在下拜谢了！！！！！

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