{"id":306897,"date":"2023-09-15T05:10:54","date_gmt":"2023-09-15T05:10:54","guid":{"rendered":"\/forum\/forums\/topic\/about-electrostatic-field-analysis-in-mapdl\/"},"modified":"2023-10-05T20:29:59","modified_gmt":"2023-10-05T20:29:59","slug":"about-electrostatic-field-analysis-in-mapdl","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/about-electrostatic-field-analysis-in-mapdl\/","title":{"rendered":"About electrostatic field analysis in MAPDL"},"content":{"rendered":"

Dear everyone,<\/p>\n

Maxwell cannot be used due to licensing issues.
I created the program below to simulate the effect of fringe electric fields on parallel plate capacitors in MAPDL, but the simulation does not work well.<\/p>\n

\/CLEAR<\/div>\n
\/PREP7<\/div>\n
 <\/div>\n
! \u30d7\u30ec\u30fc\u30c8\u306e\u5bf8\u6cd5\uff08μm\u5358\u4f4d\u3092mm\u5358\u4f4d\u306b\u5909\u63db\uff09<\/div>\n
width = 0.1<\/div>\n
height = 0.02<\/div>\n
thickness = 0.003<\/div>\n
separation = 0.01<\/div>\n
 <\/div>\n
! 3D 8\u30ce\u30fc\u30c9\u8981\u7d20\u306e\u9759\u96fb\u89e3\u6790\u7528\u306b\u8a2d\u5b9a<\/div>\n
ET,1,SOLID122  <\/div>\n
 <\/div>\n
! \u7121\u9650\u8981\u7d20\u3092\u5b9a\u7fa9<\/div>\n
ET,2,111,2,1  <\/div>\n
 <\/div>\n
! \u6750\u6599\u7279\u6027\uff08\u771f\u7a7a\u306e\u76f8\u5bfe\u8a98\u96fb\u7387\uff09<\/div>\n
MP,PERX,1,8.854e-12  <\/div>\n
 <\/div>\n
! \u6700\u521d\u306e\u30d7\u30ec\u30fc\u30c8\u3092\u4f5c\u6210<\/div>\n
BLOCK,0,width,0,height,0,thickness<\/div>\n
 <\/div>\n
! \u4e8c\u756a\u76ee\u306e\u30d7\u30ec\u30fc\u30c8\u3092\u4f5c\u6210<\/div>\n
BLOCK,0,width,0,height,separation,separation+thickness<\/div>\n
 <\/div>\n
! \u30e1\u30c3\u30b7\u30e5\u8a2d\u5b9a<\/div>\n
ESIZE,0.005   ! \u8981\u7d20\u30b5\u30a4\u30ba\u3092\u8a2d\u5b9a<\/div>\n
 <\/div>\n
! \u3059\u3079\u3066\u306e\u30dc\u30ea\u30e5\u30fc\u30e0\u306b\u30e1\u30c3\u30b7\u30e5\u3092\u9069\u7528<\/div>\n
ALLSEL,ALL<\/div>\n
VMESH,ALL  <\/div>\n
 <\/div>\n
\/SOLU<\/div>\n
 <\/div>\n
! \u9759\u96fb\u89e3\u6790\u3092\u6307\u5b9a<\/div>\n
ANTYPE,STAT  <\/div>\n
 <\/div>\n
! \u5883\u754c\u6761\u4ef6<\/div>\n
ALLSEL<\/div>\n
CSYS,0<\/div>\n
 <\/div>\n
! \u6700\u521d\u306e\u30d7\u30ec\u30fc\u30c8\u306e\u4e0a\u9762\u306b0V\u3092\u9069\u7528<\/div>\n
ASEL,S,LOC,Z,thickness  <\/div>\n
NSLA,S,1  <\/div>\n
D,ALL,VOLT,0  <\/div>\n
 <\/div>\n
! \u4e8c\u756a\u76ee\u306e\u30d7\u30ec\u30fc\u30c8\u306e\u4e0b\u9762\u306b1V\u3092\u9069\u7528<\/div>\n
ALLSEL<\/div>\n
ASEL,S,LOC,Z,separation<\/div>\n
NSLA,S,1<\/div>\n
D,ALL,VOLT,1  <\/div>\n
 <\/div>\n
! \u89e3\u3092\u6c42\u3081\u308b<\/div>\n
SOLVE<\/div>\n
FINISH<\/div>\n
 <\/div>\n
\/POST1<\/div>\n
PLNSOL,VOLT  ! \u30ce\u30fc\u30c9\u89e3\uff08\u96fb\u5727\uff09\u3092\u30d7\u30ed\u30c3\u30c8<\/div>\n
 <\/div>\n
! \u96fb\u5834\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u62bd\u51fa\u3057\u3066\u5bb9\u91cf\u3092\u8a08\u7b97<\/div>\n
\/OUT, CAPACITANCE_CALCULATION, , TXT<\/div>\n
*GET, W, ENER, , STAT, ENE<\/div>\n
V = 1<\/div>\n
C = 2*W\/(V**2)<\/div>\n
*STATUS, C<\/div>\n
\/OUT<\/div>\n
 <\/div>\n
 <\/div>\n
Please tell me what needs to be improved.<\/div>\n
 <\/div>\n
thank you<\/div>\n","protected":false},"template":"","class_list":["post-306897","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t