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ANSYS建?；痉椒?021/5/91 ANSYS建模ANSYS建模方法ANSYS坐標(biāo)系與工作平面實(shí)體建模網(wǎng)格劃分建模實(shí)例2021/5/92ANSYS建模方法直接建模實(shí)體建模輸入在計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)中創(chuàng)建的實(shí)體模型輸入在計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)創(chuàng)建的有限元模型2021/5/93直接建模直接創(chuàng)建節(jié)點(diǎn)和單元，模型中沒(méi)有實(shí)體優(yōu)點(diǎn)適用于小型或簡(jiǎn)單的模型可實(shí)現(xiàn)對(duì)每個(gè)結(jié)點(diǎn)和單元的編號(hào)完全控缺點(diǎn)需要人工處理的數(shù)據(jù)量大，效率低不能使用自適應(yīng)網(wǎng)格劃分功能不適合進(jìn)行優(yōu)化設(shè)計(jì)容易出錯(cuò)2021/5/94實(shí)體建模先創(chuàng)建由關(guān)鍵點(diǎn)、線段、面和體構(gòu)成的幾何模型，然后用網(wǎng)格劃分，生成節(jié)點(diǎn)和單元優(yōu)點(diǎn)適合于復(fù)雜模型，尤其適合3D實(shí)體建模需要人工處理的數(shù)據(jù)量小，效率高允許對(duì)節(jié)點(diǎn)和單元實(shí)施不同的幾何操作支持布爾操作支持ANSYS優(yōu)化設(shè)計(jì)功能可以進(jìn)行自適應(yīng)網(wǎng)格劃分可以進(jìn)行進(jìn)行局部網(wǎng)格細(xì)化便于修改和改進(jìn)缺點(diǎn)有時(shí)需要大量CPU處理時(shí)間對(duì)小型、簡(jiǎn)單的模型有時(shí)比較繁瑣在特定條件下可能會(huì)失敗2021/5/95輸入在計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)中創(chuàng)建的實(shí)體模型操作方法：UtilityMenu->File->Import輸入在計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)創(chuàng)建的有限元模型操作方法：UtilityMenu->File->Import2021/5/962021/5/97ANSYS坐標(biāo)系與工作平面坐標(biāo)系及其操作總體坐標(biāo)系局部坐標(biāo)系節(jié)點(diǎn)坐標(biāo)系單元坐標(biāo)系顯示坐標(biāo)系結(jié)果坐標(biāo)系工作平面及其操作2021/5/98總體坐標(biāo)系命令：CSYS定義笛卡爾坐標(biāo)系:CSYS,0UtilityMenu->WorkPlane->ChangeActiveCSto->GlobalCartesian定義柱坐標(biāo)系:CSYS,1UtilityMenu->WorkPlane->ChangeActiveCSto->GlobalCylindricalUtilityMenu->WorkPlane->ChangeActiveCSto->GlobalCylindricalY定義球坐標(biāo)系:CSYS,2UtilityMenu->WorkPlane->ChangeActiveCSto->GlobalSpherical2021/5/99ANSYS中，坐標(biāo)系均顯示為X,Y,Z，對(duì)柱坐標(biāo)，X代表R，Y代表θ；對(duì)球坐標(biāo)，X代表R，Y代表θ，Z代表Φ2021/5/910局部坐標(biāo)系局部坐標(biāo)的編號(hào)由11開(kāi)始在特定位置定義局部坐標(biāo)：LOCALUtilityMenu->WorkPlane->LocalCoordinateSystem->CreateLocalCS->AtSpecifiedLoc通過(guò)已有結(jié)點(diǎn)定義局部坐標(biāo)：CSUtilityMenu->WorkPlane->LocalCoordinateSystem->CreateLocalCS->By3Nodes通過(guò)已有關(guān)鍵點(diǎn)定義坐標(biāo)：CSKPUtilityMenu->WorkPlane->LocalCoordinateSystem->CreateLocalCS->By3Keypoints以當(dāng)前定義的工作平面圓心定義局部坐標(biāo)刪除局部坐標(biāo)列表顯示局部坐標(biāo)2021/5/911結(jié)點(diǎn)坐標(biāo)系用于定義結(jié)點(diǎn)自由度的方向。默認(rèn)平行于總體笛卡爾坐標(biāo)系將結(jié)點(diǎn)坐標(biāo)系旋轉(zhuǎn)到激活坐標(biāo)系方向：NROTATGUI->MainMenu->Preprocessor->Modeling->Create->Node->RotateNodeCS->ToActiveCSGUI->MainMenu->Preprocessor->Modeling->Move/Modify->Node->RotateNodeCS->ToActiveCS按給定角度旋轉(zhuǎn)結(jié)點(diǎn)坐標(biāo)系：NMODIFGUI->MainMenu->Preprocessor->Modeling->Create->Node->RotateNodeCS->ByAngleGUI->MainMenu->Preprocessor->Modeling->Move/Modify->Node->RotateNodeCS->ByAngle通過(guò)新坐標(biāo)系各軸的方向余弦旋轉(zhuǎn)結(jié)點(diǎn)坐標(biāo)系：NANG GUI->MainMenu->Preprocessor->Modeling->Create->Node->RotateNodeCS->ByVectorsGUI->MainMenu->Preprocessor->Modeling->Move/Modify->Node->RotateNodeCS->ByVectors顯示結(jié)點(diǎn)坐標(biāo)系：NLIST2021/5/912單元坐標(biāo)系用于規(guī)定正交材料特性的方向和面力結(jié)果的輸出方向，每個(gè)單元均有各自的單元坐標(biāo)系，均為右手系改變單元坐標(biāo)系的方向：ESYSGUI:MainMenu->Preprocessor->Meshing->MeshAttributes->DefaultAttribsGUI:MainMenu->Preprocessor->Modeling->Create->DefaultAttributes2021/5/913顯示坐標(biāo)系改變圖形顯示的坐標(biāo)系命令：DSYSUtilityMenu->WorkPlane->ChangeDisplayCSto->GlobalCartesianUtilityMenu->WorkPlane->ChangeDisplayCSto->GlobalCylindricalUtilityMenu->WorkPlane->ChangeDisplayCSto->GlobalSphericalUtilityMenu->WorkPlane->ChangeDisplayCSto->SpecifiedCoordSys2021/5/914結(jié)果坐標(biāo)系默認(rèn)情況下，結(jié)果數(shù)據(jù)顯示采用總體笛卡爾坐標(biāo)系改變結(jié)果坐標(biāo)系：RSYSGUI:MainMenu->GeneralPostproc->OptionsforOutputUtlityMenu->List->Results->Options2021/5/915工作平面顯示工作平面：WPSTYLE,STATUtilityMenu->List->Status->WorkingPlane通過(guò)坐標(biāo)位置定義工作平面：WPLANUtilityMenu->WorkPlane->AlignWPwith->XYZLocations通過(guò)3個(gè)關(guān)鍵點(diǎn)定義工作平面：KWPLANUtilityMenu->WorkPlane->AlignWPwith->Keypoint通過(guò)3個(gè)結(jié)點(diǎn)定義工作平面：NWPLANUtilityMenu->WorkPlane->AlignWPwith->Nodes通過(guò)線段上一點(diǎn)垂直線段定義：LWPLANUtilityMenu->WorkPlane->AlignWPwith->PlaneNormaltoLine通過(guò)現(xiàn)有坐標(biāo)系定義：WPCSYSUtilityMenu->WorkPlane->AlignWPwith->ActiveCoordSysUtilityMenu->WorkPlane->AlignWPwith->GlobalCartesianUtilityMenu->WorkPlane->AlignWPwith->SpecifiedCoordSys2021/5/916工作平面的操作移動(dòng)到多個(gè)關(guān)鍵點(diǎn)坐標(biāo)的平均值處：KWPAVEUtilityMenu->Workplane->offsetWPto->Keypoint將工作平面原點(diǎn)移動(dòng)到指定位置：WPAVEUtilityMenu->Workplane->offsetWPto->GlobalOriginUtilityMenu->Workplane->offsetWPto->OriginofActiveCSUtilityMenu->Workplane->offsetWPto->XYZLocations平移工作平面：WPOFFSUtilityMenu->Workplane->offsetWPbyIncrements旋轉(zhuǎn)工作平面：WPROTAUtilityMenu->Workplane->offsetWPbyIncrements還原已定義的工作平面：CSWPLA2021/5/917實(shí)體建模自底向上建模關(guān)鍵點(diǎn)硬點(diǎn)線面體自頂向下建模生成面生成體2021/5/918定義關(guān)鍵點(diǎn)定義單個(gè)關(guān)鍵點(diǎn)：KMainMenu->Preprocessor->Modeling->Create->Keypoints->InActivesCSMainMenu->Preprocessor->Modeling->Create->Keypoints->OnWorkingPlane在已知線段上的給定位置定義關(guān)鍵點(diǎn)：KLMainMenu->Preprocessor->Modeling->Create->Keypoints->OnLineMainMenu->Preprocessor->Modeling->Create->Keypoints->OnLinew/Ratio2021/5/919在2個(gè)關(guān)鍵點(diǎn)之間生成單個(gè)關(guān)鍵點(diǎn)：KBTWMainMenu->Preprocessor->Modeling->Create->Keypoints->KPbetweenKPs在2個(gè)關(guān)鍵點(diǎn)之間生成多個(gè)關(guān)鍵點(diǎn)：KFILLMainMenu->Preprocessor->Modeling->Create->Keypoints->FillbetweenKPs在圓弧中心點(diǎn)生成關(guān)鍵點(diǎn)：KCENTERMainMenu->Preprocessor->Modeling->Create->Keypoints->KPatCenter復(fù)制生成關(guān)鍵點(diǎn)：KGENMainMenu->Preprocessor->Modeling->Copy->Keypoints映像生成關(guān)鍵點(diǎn)：KSYMMMainMenu->Preprocessor->Modeling->Reflect->Keypoints將關(guān)鍵點(diǎn)移至另一個(gè)坐標(biāo)系：KTRANMainMenu->Preprocessor->Modeling->Move/Modify->TransferCoord->Keypoint將關(guān)鍵點(diǎn)移到一個(gè)交點(diǎn)上：KMOVEMainMenu->Preprocessor->Modeling->Move/Modify->>Keypoint->ToIntrsect在已知結(jié)點(diǎn)處定義關(guān)鍵點(diǎn)：KNODEMainMenu->Preprocessor->Modeling->Create->Keypoints->OnNode2021/5/920查看、選擇和刪除關(guān)鍵點(diǎn)列表顯示關(guān)鍵點(diǎn)：KLISTUtilityMenu->List->Keypoints圖形顯示關(guān)鍵點(diǎn)：KPLOTUtilityMenu->Plot->Keypoints選擇關(guān)鍵點(diǎn)：KSELUtilityMenu->Select->Entities刪除關(guān)鍵點(diǎn)：KDELEMainMenu->Preprocessor->Modeling->Delete->Keypoints顯示關(guān)鍵點(diǎn)編號(hào)：/PNUM,KP,1UtilityMenu->PlotCtrls->Numbering計(jì)算兩個(gè)關(guān)鍵點(diǎn)的直線距離：KDISTMainMenu->Preprocessor->Modeling->CheckGeom->KPdistances修正關(guān)鍵點(diǎn)：KMODIF2021/5/921線的定義和操作生成直線段：LSTRMainMenu->Preprocessor->Modeling->Create->Line->Lines->StraightLine由兩個(gè)關(guān)鍵點(diǎn)生成直線段：LMainMenu->Preprocessor->Modeling->Create->Line->Lines->StraightLine生成圓弧線：LARCMainMenu->Preprocessor->Modeling->Create->Line->Arcs->ByEndKps&RadMainMenu->Preprocessor->Modeling->Create->Line->Arcs->Through3Kps生成圓：CIRCLEMainMenu->Preprocessor->Modeling->Create->Line->Arcs->ByCentRadius生成樣條曲線：BSPLINMainMenu->Preprocessor->Modeling->Create->Line->Splines生成分段樣條曲線：SPLINE生成與1條線段成一定角度的線MainMenu->Preprocessor->Modeling->Create->Line->Lines->AtAngletoLine2021/5/922生成與2條線段成一定角度的線：L2ANG生成與1條線段具有共同終點(diǎn)且相切的線：LTAN生成與1條線段具有共同終點(diǎn)且相切的線：L2TAN生成一個(gè)面上2個(gè)關(guān)鍵點(diǎn)見(jiàn)最短的線：LAREA由關(guān)鍵點(diǎn)按一定路徑延伸生成線：LDRAG由關(guān)鍵點(diǎn)按某一軸線旋轉(zhuǎn)生成圓弧線：LROTAT在兩相交線之間生成倒角線：LFILLT復(fù)制生成線：LGEN映射生產(chǎn)線：LSYMM選擇線：LSEL2021/5/923面的定義和操作通過(guò)關(guān)鍵點(diǎn)：A通過(guò)線段定義面：AL拖拉線定義面：ADRAG繞軸旋轉(zhuǎn)線定義面：AROTAT面倒角：AFILLT通過(guò)引導(dǎo)線生成光滑曲面：ASKIN2021/5/924面相加：AADD面相減：ASBA面疊加：AOVLAP列表顯示面：ALIST圖形顯示面：APLOT選擇面：ASEL刪除面：ADELE2021/5/925體的定義與操作通過(guò)關(guān)鍵點(diǎn)定義體：V通過(guò)面生成體：VA沿某一路徑拖拉面生成體：VDRAG繞軸旋轉(zhuǎn)生成體：VROTAT沿面的法線方向拉伸生成體：VOFFST沿坐標(biāo)軸拉伸面生成體：VEXT復(fù)制生成體：VGEN映像生成體：VSYMM2021/5/926自頂向下建模生成面體素生成矩形生成圓形面通過(guò)圓心和半徑生成圓環(huán)或圓面通過(guò)終點(diǎn)生成圓面生成多邊形面生成體體素塊體、圓柱體、棱柱體、球體、圓臺(tái)及環(huán)體2021/5/927網(wǎng)格劃分定義單元類型定義網(wǎng)格生成控制生成網(wǎng)格2021/5/928定義單元類型ANSYS提供了豐富的單元庫(kù)，用于各種工程問(wèn)題定義單元：ETMainMenu->Preprocessor->ElementType->Add/Edit/Delete2021/5/9292021/5/9302021/5/931定義實(shí)常數(shù)和材料屬性定義實(shí)常數(shù)：RMainMenu->Preprocessor->RealConstant定義材料屬性：MP、MPDATAMainMenu->Preprocessor->MaterialModel2021/5/9322021/5/933網(wǎng)格密度控制設(shè)置默認(rèn)網(wǎng)格劃分控制：ESIZE設(shè)置關(guān)鍵點(diǎn)最近線段網(wǎng)格劃分：KESIZE控制線段網(wǎng)格劃分：LESIZE對(duì)面上線段設(shè)置網(wǎng)格控制：AESIZE設(shè)置只能網(wǎng)格控制：SMARTSIZE2021/5/934網(wǎng)格劃分方法自由劃分映射網(wǎng)格劃分延伸網(wǎng)格劃分自適應(yīng)網(wǎng)格劃分2021/5/9352021/5/936實(shí)體網(wǎng)格劃分命令關(guān)鍵點(diǎn)處生