ansys分析电磁场

1、三维螺线管静态磁场分析要求计算螺线管，如下图所示，衔铁所受磁力，线圈为直流激励，产生力驱动衔铁。线圈电流为6A，500匝。由于对称性，只分析1/4的模型，如图1所示：图1螺线管制动器在仿真分析时，空气相对磁导系数为1.0；使用智能网格划分（LVL=8）；设定全部面为通量平行，这是自然边界条件，自动得到满足。因为是采用的1/4对称模型，所以磁力的计算结果要乘以4。施加边界条件：!/SOLUD,2,MAG,0!SOLVE!ALLSEL,ALLMAGSOLV,3,1FINISH!建立的模型如下图所示：对模型进行智能网格划分，如下图所示：仿真分析所得磁场强度分布图为：衔铁所受磁力分布图为：衔铁所受磁力

2、分布图为：计算所得衔铁所受磁力为： SUMMARY OF FORCES BY VIRTUAL WORK Load Step Number: 2. Substep Number: 1. Time: 0.2000E+01 Units of Force: ( N ) Component Force-X Force-Y Force-Z ARM 0.14339E+02 0.11359E+02 -0.12846E+02 _ SUMMARY OF FORCES BY MAXWELL STRESS TENSOR Units of Force: ( N ) Component Force-X Force-Y F

3、orce-Z ARM 0.79007E+01 0.55769E+01 -0.11511E+02 _ Note: Maxwell forces are in the Global Cartesian coordinate system. Virtual work forces are in the element ESYS coordinate system. The following element table items are available for printing and plotting of the forces obtained by Virtual Work and th

4、e Maxwell Stress Tensor methods. Element Item Name Method Direction FVW_X Virtual Work X FMX_X Maxwell Stress X FVW_Y Virtual Work Y FMX_Y Maxwell Stress Y FVW_Z Virtual Work Z FMX_Z Maxwell Stress Z _ 本题采用输入命令流的方法处理，命令流如下：!/BACH,LIST/TITLE,3-D STATIC FORCE PROBLEM - TETRAHEDRAL ! 定义工作标题/FILNAME,EMA

5、GE_3D,1 ! 定义工作文件名KEYW,MAGNOD,1 ! 指定磁场分析/PREP7! 定义分析参数N=500 ! 线圈匝数I=6 ! 每匝通过的电流! 定义单元类型ET,1,96!给空气和衔铁定义材料属性MP,MURX,1,1TB,BH,2,40TBPT,355,0.7,405,0.8,470,0.9,555,1.0,673,1.1,836,1.2,1065,1.3,1220,1.35,1420,1.4,1720,1.45,2130,1.5,2670,1.55,3480,1.6,4500,1.65,5950,1.7,7650,1.75,10100,1.8,13000,1.85,1590

6、0,1.9,21100,1.95,26300,2.0,32900,2.05,42700,2.1,61700,2.15,84300,2.2,2.25,2.3,2.41,2.69,3.22TBCOPY,BH,2,3!创建电极体/PNUM,VOLU,1BLOCK,0,63.5,0,25/2,0,25/VIEW,1,1,1,1/REPLOTBLOCK,38.5,63.5,0,25/2,25,125BLOCK,13.5,63.5,0,25/2,125,150VGLUE,ALL!创建衔铁、空气体并压缩编号BLOCK,0,12.5,0,5,26.5,125 ! 衔铁体BLOCK,0,13,0,5.5,26,

7、125.5 ! 空气体VOVLAP,1,2NUMCMP,VOLUCYL4,0,0,100,90,175VOVLAP,ALLNUMCMP,VOLU!设置几何体的属性VSEL,S,VOLU,1VATT,3,1,1 ! 设置衔铁属性VSEL,S,VOLU,3,5VATT,2,1,1 ! 设置电极属性!给模型划分网格ALLSEL,ALLSMRT,8 ! 定义网格智能划分等级为8MSHAPE,1,3DMSHKEY,0VMESH,ALL/PNUM,MAT,1/NUMBER,1EPLOT!把衔铁定义成一个组件并施加力标志!ESEL,S,MAT,3 ! 选择衔铁材料单元CM,ARM,ELEMFMAGBC,ARM!转换模型单位制为米!ALLSEL,ALLVLSCALE,ALL,0.001,0.001,0.001,0,1!创建线圈!LOCAL,12,0,0,0,75/1000WPCSYS,-1,12RACE,0.0285,0.0285,0.014,N*I,0.018,0.0966,COIL1/ESHAPE,1EPLOTSAVEFINIS