ansys電磁場(chǎng)分析指南-第四章２-ｄ瞬態(tài)磁場(chǎng)分析-資料下載頁(yè)
2025-08-12 16:40本頁(yè)面
【導(dǎo)讀】流或外加場(chǎng)的隨時(shí)間無規(guī)律變化所引起的磁場(chǎng)變化。在瞬態(tài)磁場(chǎng)分析中我們所感。在渦流區(qū)域，瞬態(tài)模型只能用矢量位方程描述。只能用下列單元類型來模擬。電流或電動(dòng)勢(shì)降。區(qū)域賦屬性、劃分網(wǎng)格、加邊界條件和載荷、求解、然后檢察結(jié)果。分析中需要特殊處理的部分。數(shù)、單位制與2D靜態(tài)磁場(chǎng)分析相同，第2章已經(jīng)作了詳細(xì)描述。質(zhì)時(shí)，一般也采用與第2章中同樣的方法?！禔NSYS建模與分網(wǎng)指南》詳細(xì)介紹了建模過程。建立了模型后，對(duì)每個(gè)模。實(shí)常數(shù)、單元坐標(biāo)系等。使用AATT或VATT命令或其等效路徑來指定屬性。長(zhǎng)等），重復(fù)將這些載荷數(shù)據(jù)寫到載荷步文件中，直到所有的載荷步結(jié)束。使用PERBC2D宏，可對(duì)2D分析自動(dòng)定義周期性邊界條件。期對(duì)稱面施加約束方程和定義節(jié)點(diǎn)耦合。稱模型以及3D模型有效。在導(dǎo)體區(qū)，這種載荷要求2D單元PLANE13和PLANE53. 對(duì)2D平面和軸對(duì)稱模型，在集膚區(qū)選擇所有節(jié)點(diǎn)，并耦合它們VOLT自由度，用BFE命令或其等效菜單路徑），其值為集膚區(qū)總電流除以橫截面積。
【正文】 ＂ Areas and Mesh＂，但需將＂Existing areas will be＂菜單改為＂ Moved＂． OK． 步驟１７：加載并求解 Main MenuSolutionAnalysis TypeNew Analysis，出現(xiàn)新分析對(duì)話框． Transient 按鈕再按 OK． OK（接受 FULL 法 ） Utility MenuSelectEntities，出現(xiàn)選擇實(shí)體對(duì)話框． ＂ Nodes＂，在第二個(gè)下拉菜單中選擇＂Exterior＂． OK． Main MenuSolutionLoadsApplyMagicBoundaryFlux Par’l On Nodes，出現(xiàn)給節(jié)點(diǎn)加磁力線平行條件對(duì)話框． Pick All． Utility MenuSelectComp/AssemblySelect Comp/Assembly，出現(xiàn)選擇組件對(duì)話框． ＂ Select entities belonging to Component or Assembly＂域中選擇＂ COIL＂． OK． Main MenuSolutionLoadsApplyMagicExcitationVoltage Drop，出現(xiàn)給單元加電壓拾取菜單． Pick All，出現(xiàn)給單元加電壓對(duì)話框． ＂ Voltage drop mag ＂ (VLTG)域中輸入 12． OK． Utility MenuSelectEverything。 Main MenuSolutionLoad Step OptsTime/FrequencTime amp。 Substeps，出現(xiàn)時(shí)間和子步選項(xiàng)對(duì)話框． ＂ Time at end of load step＂域中輸入 .01，再按 OK． Main MenuSolutionLoad Step OptsTime/FrequencTime amp。 Time Step，出現(xiàn)時(shí)間和時(shí)間步長(zhǎng)選項(xiàng)對(duì)話框． ＂ Time step size＂域中輸入 .002，再按 OK． Main MenuSolutionOutput CtrlsDB/Results File，出現(xiàn)數(shù)據(jù)庫(kù)和結(jié)果文件輸出控制對(duì)話框． ＂ Item to be controlled＂域?yàn)椋?All Items＂． ＂ File write frequency＂域中打開＂ every substep＂． OK． Main MenuSolutionSolveCurrent LS． CLOSE 信息窗口， 點(diǎn) OK。 Main MenuSolutionLoad Step OptsTime/FrequencTime amp。Substeps，出現(xiàn)時(shí)間和子步選項(xiàng)對(duì)話框． ＂ Time at end of load step＂域中輸入 .03，再按 OK． Main MenuSolutionSolveCurrent LS． CLOSE 信息窗口，點(diǎn) OK。 Main MenuSolutionLoad Step OptsTime/FrequencTime amp。 TimeStep，出現(xiàn)時(shí)間和時(shí)間步長(zhǎng)選項(xiàng)對(duì)話框． ＂ Time step size＂域中輸入 .005，再按 OK． Main MenuSolutionLoad Step OptsTime/FrequencTime amp。Substeps，出現(xiàn)時(shí)間和子步選項(xiàng)對(duì)話框． ＂ Time at end of load step＂域中輸入 .06，再按 OK． Main MenuSolutionSolveCurrent LS． CLOSE 信息窗口，點(diǎn) OK。 步驟１８：觀看結(jié)果 Main MenuTimeHist PostproElecamp。MagMagics． arm． coil. OK， ANSYS 計(jì)算結(jié)果并求和，在窗口中顯示出數(shù)據(jù)信息． ，按 Close． 步驟１９：退出 ANSYS Quit 按鈕，出現(xiàn)退出 ANSYS 對(duì)話框． ＂ QuitNo Save!＂． OK. 命令流實(shí)現(xiàn) /batch,list /PREP7 /TITLE,2D Solenoid Actuator Transient Analysis ET,1,PLANE53,1! Define element type, set for axisymmetric run ET,2,PLANE53,2,1! Axisymmetric, voltagefed coil option MP,MURX,1,1! Define material permeability (air) MP,MURX,2,1000! Permeability (backiron) MP,MURX,3,1! Permeability (coil) MP,MURX,4,2020! Permeability (armature) MP,RSVX,3,3e8! Define coil resistivity MP,RSVX,4,70e8! Define armature resistivity /! Set parameter values n=650 ta=.75 tb=.75 tc=.50 td=.75 wc=1 hc=2 gap=.25 space=.25 ws=wc+2*space hs=hc+.75 w=ta+ws+tc hb=tb+hs h=hb+gap+td acoil=wc*hc! Crosssection of coil (cm**2) R,1,acoil*.01**2,n,1,.95 ! Coil constants (area, turns, dir., fill factor) /PNUM,AREA,1 RECTNG,0,w,0,tb! Create rectangular areas RECTNG,0,w,tb,hb RECTNG,ta,ta+ws,0,h RECTNG,ta+space,ta+space+wc,tb+space,tb+space+hc AOVLAP,ALL RECTNG,0,w,0,hb+gap RECTNG,0,w,0,h AOVLAP,ALL NUMCMP,AREA! Compress out unused area numbers APLOT ASEL,S,AREA,2! Assign attributes to coil AATT,3,1,2,0 ASEL,S,AREA,1! Assign attributes to armature ASEL,A,AREA,12,13 AATT,4,1,1 ASEL,S,AREA,3,5! Assign attributes to backiron ASEL,A,AREA,7,8 AATT,2,1,1,0 /PNUM,MAT,1 ALLSEL,ALL APLOT SMRTSIZE,4! Set smartsize meshing level AMESH,ALL! Mesh all areas ESEL,S,MAT,4! Select armature elements CM,ARM,ELEM! Define armature as a ponent FMAGBC,ARM! Apply force boundary conditions to armature ESEL,S,MAT,3 NSLE,S CP,1,CURR,ALL CM,COIL,ELEM! Define coil as a ponent ALLSEL,ALL ARSCAL,ALL,.01,.01,1,0,1! Scale model to MKS (meters) FINISH /SOLU ANTYP,TRANS NSEL,EXT! Select exterior nodes D,ALL,AZ,0! Set potentials to zero (fluxparallel) CMSEL,S,COIL BFE,ALL,VLTG,12 ALLSEL,ALL TIME,.01 DELTIM,.002 OUTRES,ALL,ALL SOLVE TIME,.03 NSUBST,1 SOLVE TIME,.03 DELTIM,.005 TIME,.06 NSUBST,1 SOLVE FINISH /POST26 PMGTRAN,ARM,,COIL,COIL FINISH 其它例題 在《 ANSYS 校驗(yàn)手冊(cè)》中還有幾個(gè)分析例題： VM186 帶縫導(dǎo)體的瞬態(tài)分析
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