自己画了个直线电机,1/4圆筒(整个结构就是1/4圆筒,并非是简化后的模型哦)型的结构,计算了一下动子的推力,却不知道为什么,结果老是不对,法向吸引力因该是推力的10倍左右吧,可是结果却不是,不知道什么地方出的错,请大家帮忙看看
结构图如下:
/prep7
*afun,deg
*SET,t,12e-3 !结构参数
*SET,h,4e-3
*SET,m,20e-3
*SET,k,43e-3
*SET,s,36e-3
*SET,k1,7/12
*SET,k2,28/43
*SET,K3,4/7
*SET,K4,1/4
*SET,K5,30/36
*SET,ts,k1*t
*SET,d,k2*k
*SET,n,k3*ts
*SET,delta,k4*h
*SET,tau,k5*s
*SET,ml,6*t+t*(1-k1)
*SET,dl ,6*s+s*(1-k5)
*SET,z,300
*SET,I,3
*SET,tt,0
*SET,w,50
*SET,JSA,z*I*sin(w*tt)/(d-0.001)/ts !动子三相电流密度
*SET,JSB,z*I*sin(w*tt+120)/(d-0.001)/ts
*SET,JSC,z*I*sin(w*tt+240)/(d-0.001)/ts
et,1,plane53 !定义单元
et,2,solid117
emunits,mks
mp,murx,1,1 !空气
mp,murx,2,4000 !定子铁轭
TB,BH,3,1,30, !矽钢片B-H曲线
TBPT,,355,0.7
TBPT,,405,0.8
TBPT,,470,0.9
TBPT,,555,1.0
TBPT,,673,1.1
TBPT,,836,1.2
TBPT,,1065,1.3
TBPT,,1220,1.35
TBPT,,1420,1.4
TBPT,,1720,1.45
TBPT,,2130,1.5
TBPT,,2670,1.55
TBPT,,3480,1.6
TBPT,,4500,1.65
TBPT,,5950,1.7
TBPT,,7650,1.75
TBPT,,10100,1.8
TBPT,,13000,1.85
TBPT,,15900,1.9
TBPT,,21100,1.95
TBPT,,26300,2.0
TBPT,,32900,2.05
TBPT,,42700,2.1
TBPT,,61700,2.15
TBPT,,84300,2.2
TBPT,,110000,2.25
TBPT,,135000,2.3
TBPT,,200000,2.41
TBPT,,400000,2.69
TBPT,,800000,3.22
mp,murx,4,1 !永磁体N极
mp,mgxx,4,895000
mp,murx,5,1 !永磁体S极
mp,mgxx,5,-895000
mp,murx,6,1
mp,rsvx,6,1.0e-8
!参数建模
blc4,0,0,ml,k !动子模型
blc4,t*(1-k1),1e-3,ts,d
agen,6,2,,,t
blc4,t-ts+0.5*(ts-n),0,n,1e-3
agen,6,8,,,t
allsel,all
aovlap,all
numcmp,all
numcrg,all,,,,low
adele,1,6,1,1
blc4,-(2*S-tau/2)+(2*t+(t-ts)/2),-(m+h+delta),dl,m !定子模型
blc4,-(2*S-tau/2)+(2*t+(t-ts)/2)+(s-tau),-(h+delta),tau,h
agen,6,2,,,s
blc4,-57e-3,-25e-3,270e-3,118e-3
allsel,all
aovlap,all
numcrg,all,,,,low
numcmp,all
/PNUM,AREA,1
VROTAT,all, , , , , ,81,82,90, ,
allsel,all
wpoff,0,-0.025,0
wpro,,,-90
cswpla,11,1,1,1
csys,11
vsel,s,volum,,6,11,1 !赋值材料属性
vatt,6,1,2,11
vsel,a,volum,,12
vatt,3,1,2,11
vsel,s,volum,,15
vatt,1,1,2,11
vsel,s,volum,,1,5,2
vatt,4,1,2,11
vsel,s,volum,,2,4,2
vsel,a,volum,,13
vatt,5,1,2,11
vsel,s,volum,,14
vatt,2,1,2,11
allsel,all !网格划分
vsel,s,volum,,6,11,1
esize,0.004
vsweep,all
vsel,s,volum,,12
esize,0.004
vsweep,all
vsel,s,volum,,1,5,1
vsel,a,volum,,13,14,1
esize,0.004
vsweep,all
vsel,s,volum,,15
mshape,1,3d
mshkey,0
esize,0.015
vmesh,all
vsel,s,mat,,3,6,3
eslv,s
cm,'mover',elem
FMAGBC,'mover'
allsel,all
finish
/solu
antype,static
emodify,all,esys,11 !更改单元坐标系
vsel,s,volum,,6 !加载电流密度
eslv,s
bfe,all,js,1,,JSA
vsel,s,volum,,7
eslv,s
bfe,all,js,1,,-JSC
vsel,s,volum,,8
eslv,s
bfe,all,js,1,,JSB
vsel,s,volum,,9
eslv,s
bfe,all,js,1,,-JSA
vsel,s,volum,,10
eslv,s
bfe,all,js,1,,JSC
vsel,s,volum,,11
eslv,s
bfe,all,js,1,,-JSB
allsel,all
da,122,az,0,0 !边界条件
allsel,all
solve
finish
/post1
vsel,s,mat,,3,6,3
eslv,s
nsle,s,all
emft
[ 本帖最后由 grandjiang 于 2008-5-22 14:48 编辑 ] |