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1、<p><b> 工程電磁場課程設(shè)計</b></p><p> ——基于ANSYS軟件的有限元分析法</p><p><b> 基本知識學(xué)習(xí)總結(jié):</b></p><p> Utility Menu 實用菜單</p><p> SAVE_DB 存儲數(shù)據(jù)庫 RESUM
2、E_DB 恢復(fù)數(shù)據(jù)庫</p><p> Select Entity 選擇實體 Comp/Assembly 組元/集合</p><p> Plot/Replot 畫圖/重新畫圖 Pan,Zoom,Rotate… 平移,縮放,旋轉(zhuǎn)…</p><p> WorkPlane(WP) 工作平面 Coordinate System(CS) 坐標(biāo)系</p
3、><p> Macro 宏 </p><p> Preference()… 優(yōu)先設(shè)置…</p><p> Preprocessor (Pre7)前處理 </p><p> General Postproc (Post1) 通用后處理</p><p> Soluti
4、on(Solu) 求解模塊</p><p> TimeHist Postproc (Post26)時間歷程后處理</p><p> Optim……優(yōu)化模塊</p><p><b> 分析步驟</b></p><p><b> 建模:</b></p><p> A.重
5、名文件名(/title,xx或者File>>Change Title…)</p><p> B.設(shè)定分析范圍(main menu>>preferences:electrics)</p><p> C.建立數(shù)學(xué)模型,并進(jìn)行物理剖分析</p><p><b> 加載求解器</b></p><p&g
6、t;<b> 計入求解器</b></p><p><b> 定義分析類型:</b></p><p><b> 定義分析屬性</b></p><p><b> 加載</b></p><p><b> 保存數(shù)據(jù)庫</b><
7、/p><p><b> 開始求解</b></p><p> 世家附加載荷:若想施加額外的負(fù)載條件,重復(fù)執(zhí)行</p><p><b> 完成求解</b></p><p> 讀取結(jié)果,進(jìn)入后處理模塊</p><p><b> 實驗項目</b></
8、p><p> 靜電場分析——求圓柱截流導(dǎo)線周圍的電場和對地電容</p><p> 功能:主要能解決有電荷分布以及電壓所引起的電場和電勢(電壓)分布以及多導(dǎo)體系統(tǒng)的部分電容。</p><p><b> 分析步驟:如上</b></p><p> 靜電場分析——電容計算方法</p><p> 定義
9、式:C = Q/U </p><p> Q—帶等量異號電荷的兩導(dǎo)體的電量,U—兩導(dǎo)體間的電壓。</p><p><b> 能量法:</b></p><p> W—兩導(dǎo)體系統(tǒng)的電場能量, U1 ,U0 —兩導(dǎo)體間的電壓</p><p> ANSYS中的CMATRIX宏命令:cmatrix GUI:Main
10、Menu>Solution>Solve>Electromagnet>StaticAnalysis>Capac Matrix</p><p><b> 模型描述:</b></p><p> 求無限長載流導(dǎo)線附近的電場分布,無限長載流導(dǎo)線截面為圓柱形,周圍為空氣介質(zhì),</p><p> 平面位置和尺寸如圖8(a)
11、所示,R0 = 100mm,h= 5m,H = 50m??諝獾南鄬﹄娙萋蕿棣舝 =1 ,導(dǎo)線的相對電容率為εr=1。</p><p> 邊界和激勵設(shè)置:將大地和無限遠(yuǎn)處作為求解邊界。求解區(qū)域外圍空氣(5倍的模 型尺寸)設(shè)置為截斷邊界,邊界上的電位為0V。導(dǎo)線截面內(nèi)所有的電位均相等,導(dǎo)線 為一等勢體,電位設(shè)置為100V,圖8(b)為模型總體示意圖。</p><p> 圖8(a)無限長導(dǎo)線
12、模型尺寸圖8(b)無限長導(dǎo)線電場計算模型示意圖</p><p><b> 模型分析</b></p><p> 原理:利用鏡像法與等電軸法建立數(shù)學(xué)模型,如圖</p><p><b> 等效電軸位置:</b></p><p> 等效電容為:d=2h</p><p>
13、 即:將單輸電線對地電容等效為雙輸電線之間的電容計算。,所以單極導(dǎo)線對地電容</p><p><b> C=2</b></p><p><b> 編程命令</b></p><p> 1、確定文件名,選擇研宄范圍</p><p> 點(diǎn)擊 Utility Menu>File>Chan
14、ge Title,輸入你的文件名。</p><p> 點(diǎn)擊 Main Menu>Preferences,選擇 Electric。</p><p> 2、定義參數(shù):(ansys command windows或者Utility Menu>Parameters>Scalar Parameters)</p><p> h = 5 R0 = 0.1&
15、lt;/p><p> D_2 = sqrt(h**2-R0**2)</p><p> U = 100 d = 2*h </p><p> b = h-D_2 pi = atan(1)*4</p><p> epsilon = 8.854187817*10**(-12)</p><p> C0 = 2*pi*eps
16、ilon/log((d-(R0+b))/(R0-b)) </p><p> tau = C0*U</p><p><b> 3、定義單元類型:</b></p><p> Main Menu>Preprocessor>Element Type>Add/Edit/Delete</p><p> 點(diǎn)擊
17、Add,選擇Electrostatic和2D Quad 121 (二維四邊形單元plane121)------------------[ET,1,PLANE121]</p><p> < ET, ITYPE, Ename, KOP1, KOP2, KOP3, KOP4, KOP5, KOP6, INOPR></p><p> Defines a local element
18、type from the element library.</p><p><b> ET定義單元類型</b></p><p><b> 4、定義材料屬性:</b></p><p> Material Props>Material Models</p><p> Electromag
19、netics>Relative Permittivity>Constant: PREX=1 </p><p> (定義相對介電常數(shù))--------------[ MP,PERX,1,1]</p><p> <MP, Lab, MAT, C0, C1, C2, C3, C4></p><p> Defines a linear mate
20、rial property as a constant or a function of temperature.</p><p> PREP7:Materials</p><p> Lab: Valid material property label有效材料屬性</p><p> 包括:彈性模量Elastic moduli=(EX,EY,EZ)</p&
21、gt;<p> 割線熱膨脹系數(shù)Secant coefficients of thermal expansion(ALPX...)</p><p> 瞬時熱膨脹系數(shù)Instantaneous coefficients of thermal expansion</p><p> 主要泊松比Major Poisson's ratios(PRXY…)</p>
22、<p> 最小泊松比Minor Poisson's ratios(NUXY)</p><p><b> 5、創(chuàng)建幾何模型:</b></p><p> >>PlotCtrls>Numbering>選Keypoint numbers 為 on,Line numbers 為 on,Area numbers 為 on,點(diǎn)擊
23、OK</p><p> [/PNUM,KP,1 /PNUM,LINE,1 /PNUM,AREA,1]</p><p> < /PNUM, Label, KEY ></p><p> Controls entity numbering/coloring on plots.</p><p> Label: KP-
24、 Keypoint numbers on solid model plots.</p><p> LINE- Line numbers on solid model plots (both numbers and colors on line plots).</p><p> AREA- Area numbers on solid model plots (both numbers a
25、nd colors on area plots).</p><p> >>Main Menu>Preprocessor>Modeling>Create>Lines>Arcs>By Cent & Radius</p><p> Arc length in degrees中輸入180 Number of lines in arc中輸
26、入2</p><p> --------------------------------------畫一個半圓[circle,1,10*h,,,180]</p><p> < CIRCLE, PCENT, RAD, PAXIS, PZERO, ARC, NSEG ></p><p> Generates circular arc lines.<
27、;/p><p> PCENT-Keypoint defining the center of the circle (in the plane of the circle)</p><p> RAD-Radius of the circle</p><p> PAXIS; PZERO; ARC; </p><p> NSEG-Number
28、 of lines around circumference (defaults to minimum required for 90°-maximum arcs, i.e., 4 for 360°). Number of keypoints generated is NSEG for 360° or NSEG + 1 for less than 360°.</p><p>
29、; >>Main Menu>Preprocessor>Modeling>Create>Lines>Lines> Straight Line</p><p> 選擇關(guān)鍵點(diǎn)1,2并點(diǎn)擊OK。重復(fù)上述操作,選擇關(guān)鍵點(diǎn)1, 4 并點(diǎn)擊 OK。</p><p> --------------- 【l,1,2 l,1,4】</p>
30、<p> < L, P1, P2, NDIV, SPACE, XV1, YV1, ZV1, XV2, YV2, ZV2></p><p> Defines a line between two keypoints.連接關(guān)鍵點(diǎn)。</p><p> P1---Keypoint at the beginning of line.</p><p&g
31、t; P2----Keypoint at the end of line.</p><p> >> Main Menu>Preprocessor>Modeling>Create>Areas>Arbitrary> By Lines,</p><p> 選擇L1,L2,L3,L4,然后點(diǎn)擊OK。</p><p>
32、-----------------------【al,all】</p><p> < AL, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10 ></p><p> Generates an area bounded by previously defined lines.通過已定義的線條生成一個有界區(qū)域。</p><p&g
33、t; L1, L2, L3, . . . , L10:List of lines defining area(The minimum number of lines is 3)(If L1 = ALL, use all selected lines with L2 defining the normal)</p><p> >>Main Menu>Preprocessor>Modeli
34、ng>Create>Areas>Circle> Solid Circle,在 WP X欄中輸入0,在WP Y欄中輸入h,在Radius欄中輸入R0</p><p> -----------------------------------【cyl4,0,h,R0】</p><p> < CYL4, XCENTER, YCENTER, RAD1, THETA1
35、, RAD2, THETA2, DEPTH></p><p> Creates a circular area or cylindrical volume anywhere on the working plane.</p><p> (在工作區(qū)域坐標(biāo)為(x,y)的點(diǎn)上建一個半徑為R0的圓)</p><p> >>Select>Ever
36、ything選中所有對象---------------------------【alls】</p><p> >>點(diǎn)擊 Main Menu>Preprocessor>Modeling>Operate>Booleans> Overlap>Areas, 在彈出的對話框中點(diǎn)擊Pick All。---------------------【aovlap,all】</p
37、><p> < AOVLAP, NA1, NA2, NA3, NA4, NA5, NA6, NA7, NA8, NA9 ></p><p> Overlaps areas:重疊區(qū)域。</p><p> NA1, NA2, NA3, NA9----Numbers of areas to be operated on(If NA1 = ALL, use a
38、ll selected areas and ignore NA2 to NA9.)</p><p><b> 6、準(zhǔn)備剖分模型</b></p><p> Main Menu>Preprocessor>Meshing>MeshTool:Size Controls》Lines:Set:輸入1,2</p><p> NDIV=
39、50,Set:3,4,NDIV=50 SPACE SPACE=3;Set : 5,6,7,8>NDIV=20</p><p> --------------------【lsel,s,radius,,R0;lesize,all,,,20;lsel,s,loc,y,0;lesize,all,,,50,3;lsel,all】</p><p> <LSEL, Type, Item
40、, Comp, VMIN, VMAX, VINC, KSWP></p><p> Selects a subset of lines. 選擇線段(建立線選擇子集</p><p> Type:Label identifying the type of select</p><p> S---Select a new set (default). -建立新的
41、選擇集(默認(rèn)) </p><p> R---Reselect a set from the current set.</p><p> A---Additionally select a set and extend the current set. A--選擇加入到當(dāng)前選擇集中以擴(kuò)充當(dāng)前集</p><p> U---Unselect a set
42、 from the current set.</p><p> ALL---Restore the full set.</p><p> NONE---Unselect the full set.</p><p> INVE---Invert the current set (selected becomes unselected and vice v反選。&
43、lt;/p><p> < LESIZE, NL1, SIZE, ANGSIZ, NDIV, SPACE, KFORC, LAYER1, LAYER2, KYNDIV ></p><p> Specifies the divisions and spacing ratio on unmeshed lines.劃分網(wǎng)格</p><p> NL1---Num
44、ber of the line to be modified.</p><p> SIZE---If NDIV is blank, SIZE is the division (element edge) length</p><p> ANGSIZ---The division arc (in degrees) spanned by the element edge (except f
45、or straight lines, which always result in one division)</p><p> NDIV:如果為正,NDIV就是每條線上的單元劃分?jǐn)?shù)量,如果為負(fù),NDIV 被認(rèn)為在每條線為為0個單元</p><p> SPACE :空間的比率,如果為正,就是最后一段尺寸與第一段尺寸的比(如果大于1,尺寸是增加的,如果小于1,尺寸是減小的):如果為負(fù),就
46、是中間段尺寸與兩端尺寸的比。Space默認(rèn)為1.0(各段平均)</p><p><b> 7、剖分模型:</b></p><p> >>Alls;選中全部實體</p><p> >> Main Menu>Preprocessor>Meshing>MeshTool:Mesh 欄中選擇Areas,并在
47、Shape欄中選擇Tri,以及Free,然后點(diǎn)擊Mesh,在新彈出的對話框中點(diǎn)擊Pick All。</p><p> --------------------【mshape,1,2d amesh,all】</p><p> < MSHAPE, KEY, Dimension ></p><p> For elements that support m
48、ultiple shapes, specifies the element shape to be used for meshing.指定用于剖分的基本單元</p><p> KEY---Key indicating the element shape to be used:</p><p> 0---Mesh with quadrilateral-shaped (四邊形) eleme
49、nts when Dimension = 2-D mesh with hexahedral-shaped (六面體)elements when Dimension = 3-D. </p><p> 1--Mesh with triangle-shaped (三角形) elements when Dimension = 2-D mesh with tetrahedral-shaped (四面體)ele
50、ments when Dimension = 3-D.</p><p> Dimension--Specifies the dimension of the model to be meshed指定要網(wǎng)格的模型的尺寸</p><p> 2D--2-D model (area mesh).</p><p> 3D--3-D model (volume mesh
51、).</p><p> <AMESH, NA1, NA2, NINC></p><p> Generates nodes and area elements within areas.</p><p> NA1, NA2, NINC</p><p> Mesh areas from NA1 to NA2 (defaults
52、 to NA1) in steps of NINC (defaults to 1). If NA1 = ALL, NA2 and NINC are ignored and all selected areas [ASEL] are meshed</p><p> 8、施加邊界條件及載荷:</p><p> Main Menu>Solution>Define Loads>
53、;Apply>Electric>Boundary> Voltage>On Lines</p><p> 彈出的窗口中,輸入5,6,7,8,點(diǎn)擊OK,在新彈出的對話框的VALUE 一 欄中,輸入U。重復(fù)上述操作,在彈出的窗口中,輸入1,2,3,4,點(diǎn)擊OK,在新 彈出的對話框的VALUE —欄中,輸入0,點(diǎn)擊OK</p><p> ----------------
54、--------【lsel,s,,,5,8,1 dl,all,,volt,U lsel,s,,,1,4,1 dl,all,,volt,0】</p><p> <LSEL, Type, Item, Comp, VMIN, VMAX, VINC, KSWP ></p><p> Item ---Label identifying data. Valid item labels
55、are shown in the table below. Some items also require a component label. If Item = PICK (or simply “P”), graphical picking is enabled and all remaining command fields are ignored (valid only in the GUI). Defaults to LINE
56、. </p><p> Comp ----Component of the item (if required). Valid component labels are shown in the table below. </p><p> VMIN ----Minimum value of item range. Ranges are line numbers, coordinate
57、 values, attribute numbers, etc., as appropriate for the item. If VMIN = 0.0, a tolerance of ±1.0E-6 is used, or ±0.005 x VMIN if VMIN = VMAX. A component name (as specified on the CM command) may also be subst
58、ituted for VMIN (VMAX and VINC are ignored). If Item = MAT, TYPE, REAL, ESYS, or NDIV and if VMIN is positive, the absolute value of Item is compared against the range for selection; if VMIN is negative, the signed va<
59、;/p><p> VMAX ----Maximum value of item range. VMAX defaults to VMIN. </p><p> VINC ----Value increment within range. Used only with integer ranges (such as for line numbers). Defaults to 1. VINC
60、 cannot be negative. </p><p> KSWP -----Specifies whether only lines are to be selected: </p><p> 0 — Select lines only.</p><p> 1 — Select lines, as well as
61、keypoints, nodes, and elements associated with selected lines. Valid only with Type = S.</p><p> <DL, LINE, AREA, Lab, Value1, Value2></p><p> Defines DOF constraints on lines </p>
62、<p> LINE ---Line at which constraints are to be specified. If ALL, apply to all selected lines [LSEL]. </p><p> AREA ---Area containing line </p><p> ANSYS DOF labels </p>&l
63、t;p> UX — Displacement in X direction. X位移</p><p> UY — Displacement in Y direction. Y位移</p><p> UZ — Displacement in Z direction. ……</p><p> RO
64、TX — Rotation about X axis. X旋轉(zhuǎn)量</p><p> ROTY — Rotation about Y axis. Y旋轉(zhuǎn)</p><p> ROTZ — Rotation about Z axis. </p><p> HDSP —
65、0;Hydrostatic pressure. 液體壓力</p><p> WARP — Warping magnitude. 彎曲度</p><p> TEMP, TBOT, TE2, TE3, . . ., TTOP — Temperature 溫度系數(shù)</p><p> VOLT
66、;— Electric scalar potential. 電位勢</p><p> AX — Magnetic vector potential in X direction. X方向磁矢勢在</p><p> AY — Magnetic vector potential in Y direction.</p><
67、;p> AZ — Magnetic vector potential in Z direction.</p><p> CONC — Concentration.濃度</p><p> ALL — Applies all appropriate DOF labels除HDSP外的適合自由度</p><
68、;p><b> 9、求解</b></p><p> 點(diǎn)擊 Utility Menu> Select> Entities,設(shè)定"Nodes"和"By Num/Pick"打開"From Full",</p><p> 點(diǎn)擊SeleAll,出現(xiàn)采集菜單,點(diǎn)擊PickAll。</p>
69、;<p> 點(diǎn)擊 Main Menu> Preprocessor〉Modeling〉Operate> Scale>Areas,出現(xiàn)米集菜單,</p><p> 點(diǎn)擊PickAll,出現(xiàn)面積表度對話框,在"RX, RY, RZ Scale Factors"分別輸入.01,.01,0,在"Items to be scaled"設(shè)為"
70、Areas and mesh.",在"Existing areas will be"設(shè)為"Moved."。點(diǎn)擊 OK。</p><p> 點(diǎn)擊 Main Menu〉 Finish</p><p> -------------------------【NSEL,ALL ARSCALE,ALL,,,.01,.01,0,,0,1 FINISH
71、】</p><p> < NSEL, Type, Item, Comp, VMIN, VMAX, VINC, KABS ></p><p> Selects a subset of nodes,選中符合條件的節(jié)點(diǎn)</p><p> Type –--S R A U ALL INVE STAT</p><p> Item --
72、-- NODE >>Node number </p><p> LOC >> X, Y, or Z location in the active coordinate system </p><p> < ARSCALE, NA1, NA2, NINC, RX, RY, RZ, KINC, NOELEM, IMOVE ></p><
73、;p> Generates a scaled set of areas from a pattern of areas 生成一個比例模型</p><p> NA1, NA2, NINC---Set of areas, NA1 to NA2 in steps of NINC that defines the pattern to be scaled. NA2 defaults to NA1, NINC d
74、efaults to 1. If NA1 = ALL, NA2 and NINC are ignored and the pattern is defined by all selected areas. If NA1 = P, graphical picking is enabled and all remaining arguments are ignored (valid only in the GUI). A component
75、 name may also be substituted for NA1 (NA2 and NINC are ignored).</p><p> RX, RY, RZ---Scale factors to be applied to the X, Y, and Z keypoint coordinates in the active coordinate system. (RR, R θ, RZ
76、for cylindrical; RR, R θ, R Φ for spherical). Note that the R θ and R Φ scale factors are interpreted as angular offsets. For example, if CSYS = 1, RX, RY, RZ input of (1.5,10,3) would scale the speci
77、fied keypoints 1.5 times in the radial and 3 times in the Z direction, while adding an offset of 10 degrees to the keypoints. Zero, blank, or negative scale factor values ar</p><p> KINC---Increment to be a
78、pplied to keypoint numbers for generated set. If zero, the lowest available keypoint numbers will be assigned [NUMSTR].</p><p> NOELEM---Specifies whether nodes and elements are also to be generated:</p&
79、gt;<p> 0—Nodes and elements associated with the original areas will be generated (scaled) if they exist.</p><p> 1—Nodes and elements will not be generated.</p><p> IMOVE---Specifies
80、whether areas will be moved or newly defined:</p><p> 0—Additional areas will be generated.</p><p> 1—Original areas will be moved to new position (KINC and NOELEM are ignored). Use only if th
81、e old areas are no longer needed at their original positions. Corresponding meshed items are also moved if not needed at their original position.</p><p> <FINISH>Exits any of the ANSYS processors or t
82、he DISPLAY program</p><p><b> 10、后處理</b></p><p> 點(diǎn)擊Main Menu> Solution〉Solve> Current LS,出現(xiàn)電流載荷步驟對話框。并彈出載荷步驟</p><p> 屬性信息表。關(guān)閉載荷列表窗口。在對話框點(diǎn)擊OK開始求解,彈出信息提示求解完成, 關(guān)閉窗
83、口</p><p> 點(diǎn)擊 Main Menu〉 Finish</p><p> ------------------【/SOLUTION SOLVE FINISH】</p><p> </SOLU >Enters the solution processor</p><p> < SOLVE > Starts
84、 a solution.</p><p><b> 11、參數(shù)計算</b></p><p> 點(diǎn)擊 Main Menu> General Postproc> Element Table> Define Table。出現(xiàn)添加對話框,點(diǎn)擊 Add</p><p> 后,彈出單元表數(shù)據(jù)對話框,在"User label
85、 for item"輸入SENE,在滾動表"Results data item" 選中"Energy."。點(diǎn)擊 OK。</p><p> 再點(diǎn)擊 Add 在"User label for item",輸入 EFX。在"Results data item"中,左欄中選中"Flux & gradient&qu
86、ot;,右欄中選中"Elec field EFX.",點(diǎn)擊 OK;</p><p> 再點(diǎn)擊 Add,在"User label for item"輸入 EFY,在"Results dataitem"左欄中"Flux & gradient",右欄中"Elec field EFY."。點(diǎn)擊OK,單元表數(shù)據(jù)對話
87、框現(xiàn)在顯示所定義的SENE, FEX和EFY。點(diǎn)擊CLOSE關(guān)閉對話框。在工具欄點(diǎn)擊SAVE—DB存盤。</p><p> ---------------------【/POST1 ETABLE,SENE,SENE ETABLE,EFX,EF,X ETABLE,EFY,EF,Y】</p><p> </POST1 >Enters the database results p
88、ostprocessor.進(jìn)入通用后處理模塊</p><p> < ETABLE, Lab, Item, Comp ></p><p> Fills a table of element values for further processing. 將單元值形成一個表以便進(jìn)一步的處理</p><p> Lab:用戶自定義的表名,用于后續(xù)命令或輸出的
89、標(biāo)題,最多可使用8個字母,不可與預(yù)定義的表名稱重復(fù),不可用作用戶自定表名:REFL, STAT, 和ERAS</p><p> Lab = REFL以ETABLE的最新選項重寫所有ETABLE命令預(yù)定義的表,但保留字段將被忽略,這個命令在載荷步改變后重寫表時很方便。Lab = STAT將顯示儲存的表的值。Lab = ERAS將刪除整個表</p><p> Item選項名稱(Item =
90、 ERAS將刪除表中的某一欄)</p><p> Comp: 選項的欄目名</p><p><b> 12、畫出分析結(jié)果</b></p><p> 點(diǎn)擊 Utility Menu> PlotCtrls> Numbering,將"Numbering shown with"設(shè)為"Colors only
91、.",點(diǎn) 擊 OK。</p><p> 點(diǎn)擊 Main Menu> General Postproc> Plot Results〉Contour Plot> Nodal Solu,在"Item to be contoured"選中"DOF solution>Electric potential。點(diǎn)擊 OK,圖形對話框等位線繪圖。</p>
92、<p> 點(diǎn)擊 Main Menu〉General Postproc〉Plot Results〉Vector Plot〉User-defined,在"Item"</p><p> 輸入EFX,在"Lab2"輸入EFY。點(diǎn)擊OK,顯示電場矢量繪圖</p><p> ------------------------【/NUMBER,1
93、 PLNSOL,VOLT PLVECT,EFX,EFY】</p><p> < /NUMBER, NKEY > Specifies whether numbers, colors, or both are used for displays</p><p> 設(shè)置顯示實體編號時,編號與顏色是否一起顯示</p><p> NKEY: 0---Colo
94、r (terminal dependent) the numbered items and show numbers</p><p> 1---Color the numbered items. Do not show the numbers</p><p> 2---Show the numbers. Do not color the items</p><p&g
95、t; -1---Do not color the items or show the numbers. For contour plots, the resulting display will vary</p><p> < PLNSOL, Item, Comp, KUND, Fact, FileID ></p><p> Displays results as con
96、tinuous contours. 顯示節(jié)點(diǎn)結(jié)果圖。(根據(jù)item和comp的表格)</p><p> Item:顯示結(jié)果的標(biāo)識符 Comp標(biāo)志符組項的符號</p><p> Kund: Fact:對接觸分析的結(jié)果數(shù)據(jù),2D顯示為縮放因子</p><p> < PLVECT, Item, Lab2, Lab3, La
97、bP, Mode, Loc, Edge, KUND ></p><p> Displays results as vectors. 以矢量方式顯示結(jié)果圖</p><p> Item - 預(yù)定的矢量標(biāo)識符或矢量的分量標(biāo)識符預(yù)定的矢量標(biāo)識符主要有U、ROT、V、A、S、EPTO、EPEL、EPPL、EPCR、EPTH。 </p><p> L
98、ab2,Lab3 - 用戶定義的分矢量標(biāo)識符如Item為預(yù)定標(biāo)識符必須為空。</p><p> LabP - 合成矢量標(biāo)識符缺省為 Item。 </p><p> Mode - 顯示方式控制。如為空則采用 /DEVICE 中的 KEY 參數(shù)指定的方式;如 MODE=RAST 則采用光柵模式;如 MODE=VECT 則采用矢量模式顯示。 </p
99、><p> Loc - 顯示單元場結(jié)果的矢量位置。如 Loc=ELEM缺省則在單元質(zhì)心處顯示;如 Loc=NODE 則在單元節(jié)點(diǎn)上顯示。 </p><p> Edge - 單元邊界的顯示方式。如為空則采用 /DEGE 中的 KEY 參數(shù)指定的方式如 Edge=OFF 則不顯示單元邊界如 Edge=ON 則顯示單元邊界。</p><p> 【
100、注釋:還可以有其他顯示方式如PLDISP PLESOL PLETAB PLLS PLTRAC /REPLOT 】</p><p> 13、完成電容計算:</p><p> 點(diǎn)擊 Main Menu〉General Postproc〉Element Table〉Sum of Each Item,出現(xiàn)信息對話框,點(diǎn)擊OK,彈出窗口顯示你輸入的所有單元表和它們的值。點(diǎn)擊CLOSE關(guān)閉窗口。&
101、lt;/p><p> 點(diǎn)擊Utility Menu〉Parameters〉Get Scalar Data,出現(xiàn)獲得的標(biāo)量數(shù)據(jù)對話框,在"Type of data to be retrieved"選中"Results data"和"Elem table sums.",點(diǎn)擊 OK,出現(xiàn)得到的單元 表總和結(jié)果對話框。在"Name of paramete
102、r to be defined,"輸入 W,將"Element table item"設(shè) 為"SENE.",點(diǎn)擊 OK。</p><p> 點(diǎn)擊 Utility Menu> Parameters〉Scalar Parameters,出現(xiàn)標(biāo)量參數(shù)對話框,輸入 C = (w*2)/((V1-V0)**2),點(diǎn)擊 accept;再輸入 C = ((C*2)*1e
103、12),點(diǎn)擊 accept,最后點(diǎn)擊 Close,</p><p> 關(guān)閉參數(shù)設(shè)置對話框。</p><p> 點(diǎn)擊 Utility Menu〉List〉Status〉Parameters〉Named Parameter 出現(xiàn)定義的參數(shù)情況</p><p> 對話框,在"Name of parameter"突出C,點(diǎn)擊OK彈出的對話框顯示C參
104、數(shù)(電容)的值, 大約為178.94</p><p> 點(diǎn)擊Close關(guān)閉彈出窗口</p><p> ------------------------【SSUM *GET,W,SSUM,,ITEM,SENE C=(W*2)/((V1-V0)**2) C=((C*2)*1E12) *STATUS,C】</p><p> < SSUM > Calc
105、ulates and prints the sum of element table items</p><p> Calculates and prints the tabular sum of each existing labeled result item [ETABLE] for the selected </p><p> elements . If absolute va
106、lues are requested [SABS,1], absolute values are used</p><p> < *GET, Par, Entity, ENTNUM, Item1, IT1NUM, Item2, IT2NUM ></p><p> *GET retrieves a value for a specified item and stores t
107、he value as a scalar parameter, or as a value in a usernamed array parameter.</p><p> 從一個參數(shù)或者數(shù)組參數(shù)中提取值 Par, 貯存返回值的參數(shù)名 Entity,將要返回項的關(guān)鍵詞 NODE ELEM KP LINE AREA VOLU PDS 等 ENTNUM 實體的編號,若為·代表所有實體 Item1 對
108、一個特定實體,其項的名稱 IT1NUM 指定的Item1的數(shù) Item2,IT2NUM</p><p><b> 14、完成分析:</b></p><p> 點(diǎn)擊Main Menu〉Finish,然后退出</p><p> *********************************************************
109、****************************************</p><p><b> LOG文件:</b></p><p><b> /prep7</b></p><p><b> h=5</b></p><p><b> R0=0.1&
110、lt;/b></p><p> D_2=sqrt(h**2-R0**2)</p><p><b> U=100</b></p><p><b> d=2*h</b></p><p><b> b=h-D_2</b></p><p> pi
111、=atan(1)*4</p><p> epsilon=8.854187817*10**(-12)</p><p> C0=2*pi*epsilon/log((d-(R0+b))/(R0-b))</p><p><b> tau=C0*U</b></p><p><b> k,1,0,0</b&g
112、t;</p><p> circle,1,10*h,,,180</p><p><b> l,1,2</b></p><p><b> l,1,4</b></p><p><b> al,all</b></p><p> cyl4,0,h,R0
113、</p><p><b> alls</b></p><p> aovlap,all</p><p><b> !物理模型設(shè)置</b></p><p> et,1,plane121</p><p> mp,perx,1,1</p><p>&
114、lt;b> !剖分</b></p><p> lsel,s,radius,,R0</p><p> lesize,all,,,20</p><p> lsel,s,loc,y,0</p><p> lesize,all,,,50,3</p><p><b> lsel,all&l
115、t;/b></p><p> lsel,s,loc,x,10*h*1.414/2</p><p> lsel,a,loc,x,-1*10*h*1.414/2</p><p> lesize,all,,,50</p><p> mshape,1,2d</p><p><b> amesh,all
116、</b></p><p><b> alls</b></p><p><b> !定義組件</b></p><p> lsel,s,radius,,R0</p><p><b> asll,s,1</b></p><p><b&
117、gt; nsla,s,1</b></p><p> cm,cond1,node</p><p><b> alls</b></p><p> lsel,s,loc,y,0</p><p> lsel,a,loc,x,10*h*1.414/2</p><p> lsel,a,
118、loc,x,-1*10*h*1.414/2</p><p><b> nsll,s,1</b></p><p> cm,cond2,node</p><p><b> !求解電容</b></p><p><b> alls</b></p><p>
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