热分析中的对称问题
我计算摩擦生热，计算得到摩擦生热的热流密度，由于模型较大，只取一半计算，可是算出来的结果不对称以下是我的程序，求高手指点
BLOCK,0,2,0,18*L,-600*L,0
BLOCK,0,2,18*L,98*L,-600*L,0
BLOCK,0,2,98*L,133*L,-600*L,0
BLOCK,0,2,133*L,135*L,-600*L,0
VGLUE,ALL
NUMCMP,ALL
LESIZE,5,100*L,,,1,1,1
LESIZE,7,100*L,,,1,1,1
LESIZE,6,18*L,,,1,1,1
LESIZE,8,18*L,,,1,1,1
AMESH,2
LESIZE,14,100*L,,,1,1,1
LESIZE,28,40*L,,,1,1,1
LESIZE,27,40*L,,,1,1,1
AMESH,11
LESIZE,18,100*L,,,1,1,1
LESIZE,31,35*L,,,1,1,1
LESIZE,32,35*L,,,1,1,1
AMESH,15
ESEL,S,,,62,79,1
EREFINE,ALL,,,2,,OFF
ESEL,S,,,83,173,6
ESEL,A,,,87,177,6
ESEL,A,,,88,178,6
ESEL,A,,,62,79,1
EREFINE,ALL,,,2,,OFF
ESEL,S,,,185,467,6
ESEL,A,,,189,471,6
ESEL,A,,,190,472,6
ESEL,A,,,62,79,1
EREFINE,ALL,,,2,,OFF
LSEL,S,,,10,11,1
LSEL,A,,,15,19,4
LESIZE,ALL,,,40,0.1,1
LSEL,S,,,9,12,3
LSEL,A,,,16,20,4
LESIZE,ALL,,,40,10,1
MAT,2
VSWEEP,3
MAT,3
VSWEEP,2
MAT,4
VSWEEP,1
ALLSEL
LSEL,S,,,33,36,1
ESIZE,2*L
MAT,1
VSWEEP,4
/SOLU
ANTYPE,TRANS
NLGEOM,ON
ASEL,S,,,2,11,9
ASEL,A,,,15,19,4
ASEL,A,,,22,26,4
DA,ALL,SYMM
ALLSEL
ASEL,S,,,9
NSLA,S,1
NSEL,R,LOC,Z,-300*L,0
SF,ALL,HFLUX,FLUX
ALLSEL
TIME,0.15
NSUBST,60,80,60
AUTO,ON
EQSLV,PCG,,2
!NROP,UNSYM
SOLVE
finish 应该是坐标错了吧，仔细看一下
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