CATIA数字样机DMU入门教程
CATIA_DMU机构运动分析新手教程

第五章DMU 机构运动分析1 第五章CATIA V5 DMU 机构运动分析目录1产品介绍 (4)2图标功能介绍(基本概念、基本界面介绍) (4)2.1DMU运动仿真(DMU Simulation)工具条 (4)2.2DMU运动副创建工具条(Kinematics Joints) (4)2.3DMU Generic Animation (5)2.4机构刷新(DMU Kinematics Update) (6)2.5干涉检查模式工具条(Clash Mode) (6)2.6DMU 空间分析(DMU Space Analysis) (6)3功能详细介绍 (7)3.1DMU运动仿真(DMU Simulation)工具条 (7)3.1.1用命令驱动仿真(Simulating with Commands) (7)3.1.2用规则驱动仿真(Simulating With Laws) (9)3.1.3仿真感应器(Sensors) (10)3.1.4机构修饰(Mechanism Dressup) (12)3.1.5创建固定副(Fixed Part) (12)3.1.6装配约束转换(Assembly Constraints Conver) (13)3.1.7测量速度和加速度(Speeds and Accelerations) (15)3.1.8机构分析(Mechanism Analysis) (17)3.2DMU运动副创建工具条(Kinematics Joints) (19)3.2.1创建转动副(Creating Revolute Joints)点击 (19)3.2.2创建滑动副(Creating Prismatic Joints) (20)3.2.3同轴副(Creating Cylindrical Joints) (21)3.2.4创建球铰连接(Creating Spherical Joints) (22)3.2.5创建平动副(Creating Planar Joints) (23)3.2.6创建刚性副(Rigid Joints) (24)3.2.7点-线副(Point Curve Joints) (24)3.2.8曲线滑动副(Slide Curve Joints) (25)3.2.9点-面副(Point Surface Joints) (26)3.2.10万向节(Universal Joints) (26)3.2.11C V连接(CV Joints) (27)3.2.12创建齿轮副(Gear Joints) (28)2 第五章CATIA V5 DMU 机构运动分析3.2.13滑动-转动复合运动副(Rack Joints) (30)3.2.14滑动-滑动复合运动副(Cable Joints) (32)3.2.15用坐标系法建立运动副(Creating Joints Using Axis Systems) (32)3.3DMU Generic Animation工具条 (34)3.3.1创建运动仿真记录(Simulation) (34)3.3.2生成重放文件(Generate Replay) (36)3.3.3重放(Replay) (37)3.3.4仿真播放器(Simulation Player) (37)3.3.5编辑序列(Edit Sequence) (37)3.3.6包络体(Swept Volume) (37)3.3.7生成轨迹线(Trace) (37)3.4机构刷新(DMU Kinematics Update) (38)3.4.1机构位置刷新(Update) (38)3.4.2输入子机构(Import Sub-Mechanisms) (38)3.4.3重设位置(Reset Positions ) (39)3.5干涉检查模式工具条(Clash Mode) (40)3.5.1关闭干涉检查(Clash Detection(Off) (40)3.5.2打开干涉检查(Clash Detection(On) (40)3.5.3遇到干涉停止(Clash Detection(Stop) (40)3.6DMU 空间分析(DMU Space Analysis) (40)3.6.1干涉检查(Clash) (40)3.6.2距离和距离带分析(Distance and band analysis) (40)3.7示例 (41)3 第五章CATIA V5 DMU 机构运动分析1 产品介绍DMU机构运动分析(Kin )是专门做DMU装配运动仿真的模块。
CATIA DMU培训课件

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预研和基础技术研究院-整车架构部
1、DMU简介
DMU为电子样机的英文缩写,英文名称:Digital Mock-Up;是对产品的真实 化计算机模拟,满足各种各样的功能,提供用于工程设计、加工制造、产品 拆装维护的模拟环境;是支持产品和流程、信息传递、决策制定的公共平台; 覆盖产品从概念设计到维护服务的整个生命周期。
预研和基础技术研究院-整车架构部
2012-2-22
整车架构部:王养兵 2012年02月22日
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预研和基础技术研究院-整车架构部
2012-2-22
整车架构部:王养兵 2012年02月22日
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预研和基础技术研究院-整车架构部
目录
ØDMU简介 ØDMU运动机构介绍 ØDMU空间分析 ØDMU装配
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三、DMU拆装分析
DMU拆装是对产品拆装过程的演示,也可在拆装过程中进行动态的检查产 品与周边件之间的关系,拆装主要包含拆装路径的定义和优化,拆装过程 中德动态干涉检查、工具空间的校核等
轨迹记录器 颜色变换器 序号编辑器
播放器
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复位 路径追踪器 光顺
可拆装 的组件
包络体 9
爆炸图
预研和基础技术研究院-整车架构部
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预研和基础技术研究院-整车架构部
四、DMU空间分析
该模块是通过干涉检查、截面分析、距离测量等手段来对几何模型的一种校 核,以期消除模型中存在的结构问题。
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预研和基础技术研究院-整车架构部
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2.1 运动机构
预研和基础技术研究院-整车架构部
CATIA运动分析(DMU)全解

3.1 revolute(实体接头)
该命令可以约束5个自由度 该命令用两零件之间的线和面作为约束条件,两线必须同轴,面可以不重合,选择 即可。两个零件之间的同轴旋转运动,可以用该命令约束。约束完毕添 加角度驱动 即可以实现运动功能。
运动分析培训
3.2 CYLINDER JOINT(圆柱接头)
运动分析培训
3.6 POINT SURFACE JOINT(点-曲面接头)
该命令可以约束1个自由度 通过点-面接头,可以让一个点在一个平面上移动。点与曲面分别位于不同的零件上, 如此零件即顺着曲面的弧度与高低而移动。设置此接头时,点必须位于曲面上,即点与 曲面的距离为零,因此要在assembly design中进行好组装再使用此接头。
运动分析培训
2、基础知识介绍
自由度的计算: 根据零件的数量计算自由度,自由度的计算公式: 高副: 凡两构件系通过点或线接触而构成的运动副统称为高副 低副: 两构件通过面接触而构成的运动副统称为低副;
运动分析培训
例如:四连杆机构 自由度的计算: F=3*3-2*4=1 机构可以实现运动。
运动分析培训
约束完成,所有自由度为零
运动分析培训
添加固定部件,出现如图的提示,既完 成运动分析的所有约束。
该机构可以模拟运动
运动分析培训
点击simulation进 行模拟,插入模拟 的过程,运动分析 完成。 气弹簧、叉臂式玻 璃升降器、门的闭 合过程、锁开启过 程、滑门等运动机 构的运动分析也有 实例,如果兴趣的 同事可以私下交流。
4、注意事项
当所有的机构约束好以后,整个相 关联的运动机构的自由度(DOF) 会变成零。这时候把运动过程中固 定的部位用FIX命令约束,运动副 即可按约束运动。
优选CATIA实用DMU运动仿真小教程

一、功能介绍
模块简介
功能键一览表
过程 将装配件导入DMU模块----建立机械装置----分析运动结合类型 ----建立运动结合----约束固定件----设置驱动形式----运动仿真
运动仿真有两种: 1、使用命令进行模拟 (可编辑传感器) 2、模拟 (可生成自动播放动画,也可编辑传感器)----可通 过编译模拟 ,生成重放 。
4. 固定零件
单机
中的 按钮,弹出右图所示窗口
,然后直接左键单击壳体part,这时系统会出现“可以模拟机
械装置”提示,点击确定
5、设置驱动形式
注意此时机械装置自由度=0,若不为0不能仿真 的,此项尤为重要。 修改: 下限改为-65°;上限改为0°
6、使用命令进行模拟
点击
中的 (使用命令
进行模拟)按钮,弹出右图所示窗口,电机“模
(4)其他约束 用旋转指令 将以下几个产品之间互相约束一起来。 ①、“波轮与连杆”;旋转副 ②、“连杆与风门连杆”;旋转副 ③、“风门连杆与壳体”;旋转副
壳体 波轮
连杆 命令在运动机构里面,点击其图标右下方的箭 头,点击后,选择图标
然后点击“风门连杆”跟“风门”
(3)约束 图中直线1、直线2、平面1、平面2,依次 选取壳体轴线、波轮轴线、壳体平面、波 轮平面,并单击“偏移”与“驱动角度”按 钮。单击确定
机械装置:运动机构名称 结合名称:运动副名称 直线1:波轮轴 直线2:壳体轴 平面1:破轮平面 平面2:壳体平面 驱动角度:点选可驱动波轮转动角度. (注意:驱动点选后自由度-1)
拟下的立刻”按钮,便可拖动上面的游标随意旋
转,也可使用“按需要”命令,修改一下右上角数
字框中的数据,就可点击下方的 箭头标示
catia DMU官方经典教程一

CATIA/ENOVIA TrainingCOPYRIGHT DASSAULT SYSTEMES 2002 Version 5 Release 9 June 2002D M U O p t i m i z e r D e t a i l e d S t e p sTable of ContentsNH90 Exercise (3)Step 1 (3)Step 2 (8)Step 3 (13)Step 4 (18)Step 5 (21)Step 6 (24)Step 7 (27)NH90 ExerciseStep 11. Compute Simplification▪Go to the DMU Optimizer workbench▪Open the CATProduct : CATDMO_NH90_Step1.CATProduct ▪Click on the Simplification iconThe Simplification dialog box appears:▪Select the NH90_linkage_rod_type-02▪Type an Accuracy of 3mm▪Click on the Preview button:The preview window appears:2. Save the Result as a CGR file▪Click on the Save button▪Select a directory and type a different name if you want ▪Click on the Save button of the Save As window The Simplification dialog box stays active3. Compute a multi-components Simplification▪Select others components like in the picture below (one by one or with a trap)▪Type an Accuracy of 5mm▪Click on the Preview buttonThe result is displayed:▪Save it as a CGR file like previously▪Click on the Close button4. Replace the Simplified components by the CGR file just created▪Remove these five components from the assembly▪Insert the CGR file of the Simplification in the product5. Save the product under another name▪Go to the menu File / Save As…▪Type a new name▪Click on SaveStep 26. Compute Silhouette▪Open the CATProduct : CATDMO_NH90_Step2-4.CATProduct▪Select the Silhouette View in the Named Views panel▪This viewpoint is the one, which will be used for the silhouette view 7. Compute and save the silhouette▪Select the Silhouette icon▪Select the helicopter for the Selection field▪Enter 50mm for the Accuracy parameter▪Select the viewpoint Silhouette View from the Multi-selection List panel then Click OK▪Launch the computation by clicking on the Preview button▪It takes about one minute and half to compute the silhouette with this accuracy▪The preview window display the result▪Click on the Save button▪You are asked to save the silhouette in a directory: Save it▪Note that the resulting file is a tessellated file format (. cgr)▪Click on the Close button8. Create a scene with the silhouette duplicated several times▪Close all the windows in CATIA▪Go to the DMU Navigator workbench▪Insert as an existing component the silhouette you have just created▪You can inspect the silhouette as you wish▪Within the Product, copy and paste the helicopter several times,▪And use the 3D Compass to move the copies▪You can create a scene with 4 or 5 helicopters parked together9. Information about the reduction of sizeSize of the original model: 15.7 MBSize of the tessellated file: 7.8 MBNumber of triangles: 463.000Size of the silhouette: 3.4 MBNumber of triangles: 229.000Step 310. Compute Wrapping▪Go to the DMU Optimizer workbench▪Open the CATProduct : CATDMO_NH90_Step3.CATProductSelect the view View for Wrapping in the Named Views panelThis viewpoint is the one which will be used for the Wrapping computation11. Compute the Wrapping representation and substitute it to the original▪Select Tools -> Options▪Select DMU Optimizer in the left-hand box▪Select the DMU Optimizer tab▪Switch the Manage as alternate shape option on for Wrapping▪Check that Activate shape option is on▪Check that Default shape option is off▪Click OK▪Select the Wrapping icon▪Select the landing gear for the Selection field▪Put the Grain value to 50 mm▪Put the Ratio to 0.0▪Click Preview▪Note that the wrapping representation is replacing the original model in the session, because the Activate Shape option is on in the DMU Optimizer tab▪Make some tests by changing the parameters Grain,Ratio or Cubic, with Preview button to compute the new representation▪Click Save when you are satisfied with the wrapping representation ▪You are asked to save the wrapping representation (cgr file)▪Re-compute on another component or click CloseStep 412. Compute Thickness▪Go to the DMU Optimizer workbench▪Open the CATProduct : CATDMO_NH90_Step2-4.CATProduct13. Prepare the options for the result▪Turn the option Manage as an alternate shape on for Thickness14. Compute and visualize the thickness▪Select the Thickness icon▪Select the NH90 skin for the Selection field▪Enter 5 mm for the Offset1 field▪Enter 0 mm for the Offset2 field▪Click Preview to start the computation▪You can manipulate the new representation as you wish15. Analyse the new representation (volume)▪Select the Measure item icon▪Click on the NH90 skin with its new thickness▪example with composites structures)▪Close the Measure item panel▪You can try several thicknesses and re-start the computation, then compare the volumes▪To go further in this functionnality, you can put some orientation constraints to the faces with a wrong orientation, and re-start thecomputationStep 51. Compute Offset▪Go to the DMU Optimizer workbench▪Open the CATProduct : CATDMO_NH90_Step5.CATProduct▪Turn the option Manage as an alternate shape on for Offset ▪Display the view View Offset2. Compute and visualize the offseted representation▪Select the Offset icon▪Select the Actuator Cylinder component for the Selection field ▪Enter 20 mm for the Offset field▪Click Preview to start the computation▪You can manipulate the new representation as you wish▪You can try different values for the offset, then save the one you want to keep▪Click CloseStep 63. Swept Volume▪Click on the swept volume icon▪Choose the SweptVolume replay▪Click on the search icon of Products to sweep and keep selected only the Landing Gear Wheel▪Click OK▪Click on Apply button to preview the result in the preview window▪Click Ok to store the result as a Cgr, Vrml or V4 model file4. Close the structure▪Select File > Close…▪Select No save in the Close panelStep 75. Compute Free Space▪Go to the DMU Optimizer workbench▪Open the CATProduct : CATDMO_NH90_Step6.catproduct▪Turn the option Manage as an alternate shape on for Free Space6. Compute and visualize the free space representation▪Select the Free Space icon▪Select the wheel model for the Selection field▪Click Dialog Active to display the Free space box panel▪Click on the Trim on selection button to re-center the box on the wheel▪Put the Accuracy to 10 mm▪Put the Type to: In box area▪Click Preview to start the computation▪You can manipulate the new representation as you wish▪You can try different values for the accuracy, then save the one you want to keep▪Note that the representation saved is a 3Dmap format, that is to say a volume representation, made of voxels。
2024版CATIA入门教程

01 CATIAChapter法国达索公司开发01广泛应用于航空、汽车等领域02不断升级与发展03电气布线支持电气布线设计,可以定义电缆、线束等电气元件并进行布线。
提供钣金设计模块,支持钣金零件的展开和折弯计算。
数控编程支持数控加工编程,可以生成加工轨迹和三维建模能,支持各种复杂形状的设计。
工程分析01020304在航空航天领域,CATIA 被广泛应用于飞机、发动机等复杂产品的设计。
航空航天在汽车工业中,CATIA 可用于车身、底盘、发动机等各个部件的设计。
汽车工业对于机械制造行业,CATIA 可用于各种机床、模具、夹具等的设计。
机械制造在船舶制造领域,CATIA 可应用于船体、轮机、电气等各个系统的设计。
船舶制造CATIA 软件应用领域02 CATIAChapter界面介绍工具栏提供了常用命令的快捷方式,方便用户快速执行操作。
规格树用于显示和管理模型的结构和数据。
工具栏功能标准工具栏视图工具栏测量工具栏草图工具栏特征工具栏新建文件打开文件保存文件030201基本操作命令基本操作命令关闭文件撤销/重做选择对象删除对象03零件设计基础Chapter01020304草图基本概念草图编辑与修改草图绘制工具草图约束草图设计实体建模01020304实体建模基本概念基础特征创建高级特征创建特征编辑与修改曲面设计了解曲面的定义和分类,以及曲面在产品设计中的应用。
学习创建基本曲面的方法,如拉伸曲面、旋转曲面等。
掌握更复杂的曲面创建技巧,如扫掠曲面、填充曲面等。
了解如何编辑和修改已创建的曲面,以满足设计要求。
曲面基本概念基础曲面创建高级曲面创建曲面编辑与修改04装配设计基础Chapter装配约束相合约束偏移约束使两个部件的对应面、线或点重合。
使两个部件的对应面、线或点保持一定的距离。
固定约束接触约束角度约束将一个部件固定在另一个部件上,限制其所有自由度。
使两个部件的表面接触,但不限制其相对运动。
限制两个部件绕某轴的旋转角度。
DMU学习

Digital Mock-Up(DMU)——电子样机Catia(V5R12)电子样机部分一共有8个模块,分别是DMU Navigator、DMUSpace Analysis、DMU Kinematics、DMU Fitting Simulator、DMU Optimizer、DMU Engineering Analysis Review、DMU 2D Viewer、DMU Tolerancing Review。
其中后三个模块内容不多,应用极少,也缺少相关资料,不予介绍,大概介绍前五个模块,重点介绍功能比较丰富且比较常用的Navigator和Kinematics两个模块。
DMU基础(一)DMU简述DMU运行的运行的前提是产品(总成:Product),是对产品真实化的计算机模拟,通过对样机的模拟,检验产品的各项功能,提供用于工程设计、加工制造、产品拆装维护的模拟环境。
DMU提供强大的可视化手段,如安装/拆卸、机构运动分析、干涉检查、截面扫描等,由于其加强了设计过程中的最为关键的空间和尺寸控制之间的集成,在产品开发过程中,不断验证,减少错误,从而大大减少实物样机的制作与验证,缩短的产品开发周期,降低研发成本。
(二)DMU工作环境DMU只能对总成进行运算和操作,其运算规则是基于Cash System环境的。
Cash System的定制是在选项卡中Tools > Options> Product Structure中,有一个Cache Management选项,如图:指定保存位置保存文件容量选中Work with the Cache System选项卡,以后系统打开文件时都会在Cache System下运行。
它会在其他格式的文件第一次打开时,将其转换成.cgr格式的文件并将其保存在指定的位置下的Catia Cash文件夹里。
以后再打开该文件时,会直接从该位置调用相应的文档。
.cgr格式文件的显示精度可以在Tools > Options>Display>Performances中调整。
CATIADMU官方教程一

CATIADMU官方教程一D M U O p t i m i z e rD e t a i l e d S t e p sTable of ContentsNH90 Exercise (3)Step 1 (3)Step 2 (8)Step 3 (12)Step 4 (17)Step 5 (20)Step 6 (22)Step 7 (24)NH90 ExerciseStep 11. Compute SimplificationGo to the DMU Optimizer workbenchOpen the CATProduct : CATDMO_NH90_Step1.CATProduct ?Click on the Simplification iconThe Simplification dialog box appears:Select the NH90_linkage_rod_type-02Type an Accuracy of 3mmClick on the Preview button:The preview window appears:2. Save the Result as a CGR fileClick on the Save buttonSelect a directory and type a different name if youwant ?Click on the Save button of the Save As window The Simplification dialog box stays active3. Compute a multi-components SimplificationSelect others components like in the picture below(one by one or with a trap)Type an Accuracy of 5mmClick on the Preview button The result is displayed:Save it as a CGR file like previouslyClick on the Close button4. Replace the Simplified components by the CGR file just createdRemove these five components from the assemblyInsert the CGR file of the Simplification in the product5. Save the product under another nameGo to the menu File / Save As…Type a new nameClick on SaveStep 26. Compute SilhouetteOpen the CATProduct : CATDMO_NH90_Step2-4.CATProduct Select the Silhouette View in the Named Views panelThis viewpoint is the one, which will be used for the silhouette view 7. Compute and save the silhouetteSelect the Silhouette iconSelect the helicopter for the Selection fieldEnter 50mm for the Accuracy parameterSelect the viewpoint Silhouette View from the Multi-selection List panel then Click OKLaunch the computation by clicking on the Preview buttonIt takes about one minute and half to compute the silhouette with this accuracy ?The preview window display the result Click on the Save buttonYou are asked to save the silhouette in a directory: Save itNote that the resulting file is a tessellated file format (. cgr) Click on the Close button8. Create a scene with the silhouette duplicated several timesClose all the windows in CATIAGo to the DMU Navigator workbenchInsert as an existing component the silhouette you have just createdYou can inspect the silhouette as you wishWithin the Product, copy and paste the helicopter several times,And use the 3D Compass to move the copiesYou can create a scene with 4 or 5 helicopters parked together9. Information about the reduction of sizeSize of the original model: 15.7 MBSize of the tessellated file: 7.8 MBNumber of triangles: 463.000Size of the silhouette: 3.4 MBNumber of triangles: 229.000Step 310. Compute WrappingGo to the DMU Optimizer workbenchOpen the CATProduct : CATDMO_NH90_Step3.CATProduct Select the view View for Wrapping in the Named Views panel This viewpoint is the one which will be used for the Wrapping computation11. Compute the Wrapping representation and substitute it to the originalSelect Tools -> OptionsSelect DMU Optimizer in the left-hand boxSelect the DMU Optimizer tabSwitch the Manage as alternate shape option on for Wrapping ?Check that Activate shape option is onCheck that D efault shape option is offClick OKSelect the Wrapping iconSelect the landing gear for the Selection fieldPut the Grain value to 50 mmPut the Ratio to 0.0Click PreviewNote that the wrapping representation is replacing the original model in the session, because the Activate Shape option is on in the DMU Optimizer tabMake some tests by changing the parameters Grain,Ratio or Cubic, with Preview button to compute the new representation Click Save when you are satisfied with the wrapping representationYou are asked to save the wrapping representation (cgr file) Re-compute on another component or click CloseStep 412. Compute ThicknessGo to the DMU Optimizer workbenchOpen the CATProduct : CATDMO_NH90_Step2-4.CATProduct13. Prepare the options for the resultTurn the option Manage as an alternate shape on for Thickness14. Compute and visualize the thicknessSelect the Thickness iconSelect the NH90 skin for the Selection fieldEnter 5 mm for the Offset1 fieldEnter 0 mm for the Offset2 fieldClick Preview to start the computationYou can manipulate the new representation as you wish15. Analyse the new representation (volume)Select the Measure item iconClick on the NH90 skin with its new thicknessYou get the volume of the NH90 skin with a thickness of 5 mm (for example with composites structures)Close the Measure item panelYou can try several thicknesses and re-start the computation, then compare the volumesTo go further in this functionnality, you can put some orientation constraints to the faces with a wrong orientation, and re-start the computation。
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CATIA数字样机DMU入门教程
沈沉CAX门户()
今天有个学弟问我DMU装配动画怎么做,网上相关资料不多,我做了个简单的入门的教程。
DMU本身不难,界面也友好,只要了解结构关系和基本操作,入门以后都可以自己摸索。
转载注明出处:/forum-38-1.html
好了,开始了,零部件文件如下:
DMU.zip (46.26 KB)
首先导入part1、part2。
用操纵按钮移动零部件到动画初始位置。
转到DMU模块
使用Track按钮,编辑轨道
如下图操作
设置轨道时间长度
编辑序列(sequence)
将轨道加入序列
看到tree上的序列,可以播放啦
这是个简单的例子,动作复杂可以用序列编辑器导演,如图
东西挺简单吧,接下来可以自己摸索了,很多别的小功能自己探索吧。
导出视频可以用实时渲染模块(下图)。