ansys电磁受力比较

1、ansys 2d电磁力受力分析比较1、 所用apdlfini/cle/filname,pingbi,1/title,lovz/prep7/format,f,18,9r1=0.464r2=0.5115l=0.355i=165n=14526s=l*(r2-r1)j=n*i/srd1=0.18rd2=0.18rd3=0.18r4=0.9r5=0ld=-0.636!etet,1,53,1et,2,110,1mp,murx,1,1mp,murx,2,1mat,3mpread,'emagSa1010','SI_MPL','D:Program FilesANSYS I

2、ncv140ansysmatlib',LIB!model/pnum,area,1rect,r1,r2,-l/2,l/2rect,r5,r4,ld,0.636rect,r5,r4+rd2,ld-rd1,0.636+rd3rect,0,1.5,-1.5,1.5rect,0,3,-3,3rect,0,6,-6,6aovlap,allaglue,allnumcmp,allaplotallselaatt,1,1asel,1aatt,2,1asel,2aatt,3,1asel,5aatt,1,2allselasel,5asel,invesmrt,1amesh,allallselasel,5asel

3、,invelsel,s,extlsel,u,loc,x,0lccat,allallsellsel,s,extlsel,u,loc,x,0lccat,allallselsmrt,offesize,1amesh,5aref,1,2,1,2allsel*get,lmax,line,num,maxldele,lmax-1,lmax,1allsel/sollsel,s,extlsel,u,loc,x,0nsll,s,1sf,all,infallselnsel,s,loc,x,0d,all,az,0allselesel,s,mat,2bfe,all,js,jallselesel,s,mat,3cm,arm

4、,elemfmagbc,'arm'esel,s,mat,2cm,coil,elemfmagbc,'coil'allselmagsolv,0,4,0.0001,25/post1plnsol,b,sumplf2d,100nc=node(0,0,0)*get,b_center,node,nc,b,summur=1.256e-6etab,nmisc,1sadd,uu,nmis1,1/murpletab,uu,avgpath,c1,2,30,200ppath,1,0ppath,2,-2pdef,b,y,noavprpath,byfmagsum,'arm',

5、'coil'2、 模型图示如右，一铁轭与电流线圈，铁轭对称，理论上铁轭受力为0；但由于中心磁场略大，约为3.2T，所以受力的误差相对放大，有点不可接受。现对各种处理做一比较，方便以后更好的对其进行控制。3、 网格比较1)粗略网格smrt,1 2） 较细网格 >>plane53>>magsolv,0,4,0.0001,25>>smrt,1$amesh,all$aref,all,23) 更细网格>> plane 53>> magsolv,0,4,0.0001,25smrt,1amesh,allaref,all,2可见，细致

6、网格能提高求解电磁力的精度，通过查看求解时的收敛曲线，可以看到细致网格降低了磁电流段的收敛误差。另外，可以看出虚功力的要比麦克斯韦力准确点。一般来说，网格密度足够时，虚功力和麦克斯韦力相差无几。4、 单元比较1） plane13单元>> magsolv,0,4,0.0001,25smrt,1amesh,allaref,all,2与3-3）比较，可见准确度没有53单元好。13为4节点单元；53为8节点单元，拥有中间节点，有个233单元，貌似也差不多。CSG收敛程度和网格密度一致，但53要少一半单元。13单元可以用作磁结构耦合。MAGSOLV, OPT, NRAMP, CNVCSG,

7、CNVFLUX, NEQIT, BIOT,CNVTOL5、对magsolv>cnvcsg项的设置比较1） >>plane 53>>amrt,1$amesh,all$aref,all,2 magsolv,0,4,0.0001,25>>magsolv,0,4,0.001,25对cnvcsg项的CSG的容差设置对结果没有多大影响，较小的cnvcsg可减小csg的收敛误差。鉴于收敛判据为value与toler一起作用，因此需对其谨慎处理。通过cnvtol,csg,1e-8,将csg容差设为1e-8可获得较为精确的结果。3)>>magsolv,0,4

8、,0.000001,252） >>magsolv,0,4,0.00001,256、 对magsolv>nramp项的设置比较2）magsolv,0,5,0.0001,251）>>plane 53>>amrt,1$amesh,all$aref,all,2>>magsolv,0,3,0.0001,25nramp项为迭代次数。4)>>magsolv,0,10,0.000001,253）>>magsolv,0,10,0.0001,252)>>solve>>amrt,1$amesh,all7、 solv

9、e和magsolv的比较1） >>plane53>>solve>>amrt,1$amesh,all$aref,all,2 可见，若无收敛容差设置，solve 对于此例材料非线性，效果没有magsolv好。8、其他设置1）单载荷步求解time,2nsub,20kbc,0solve2）pcg求解器time,1nsub,4eqslv,pcg,1e-8solve3）time,1nsub,4cnvtol,a,0.0001cnvtol,csg,1e-8solve4）time,1nsub,5cnvtol,csg,1e-8solve5）time,1nsub,5solcont

10、rol,1cnvtol,csg,1e-8solve6）time,1nsub,5solcontrol,1cnvtol,csg,1e-8magsolv,4,1e-8,507）allselmagsolv,4,1e-8,508）allseleqslv,jcg,1e-8solve9）allseleqslv,jcgmagsolv,4,1e-8,5010）allseleqslv,front,1e-8solve11）allseleqslv,front,1e-8magsolv,5,1e-8,5012）allseleqslv,sparse,1e-8cnvtol,csg,1e-8cnvtol,a,1e-8solve13）allseleqslv,sparse,1e-8cnvtol,a,1e-8solve14）allselcnvtol,csg,1e-8solve15）allselcnvtol,csg,1e-8eqslv,jccgsolve做的吐血。（#_#&；%；总结下，用magsolv,4,1e-8,50即可。但为什么线圈受力那么差呢，难道除了网格对称没别的方法了么。esel,s,mat,2eta