ABAQUS612 orphan to geometryupload.docx

1、ABAQUS612 orphan to geometryuploadCreating geometry from orphan elements(从孤立网格创建几何体)方法如下：1.创建几何面。Abaqus/CAEUsage: Part module: ToolsGeometry Edit: Face: From element faces2.你每增加一个面，Abaqus/CAE在存在的几何体上缝上新面，最终产生孤立单元体表面生成一个壳体。3.当创建新面结束后，如果需要可使用Geometry Edit toolset中其它工具对几何体进行修整。每个面都具有独立特性，你不能对由单元面创建的面进行

2、编辑。然后，你可增加新的几何特征、由壳体创建实体、抑制或删除孤立网格、对所创建的part划分新网格。4.在Abaqus6.12中新增功能，允许你把孤立单元面当作sketch plane（草图平面）下面的步骤将帮助你从孤立网格创建几何体：1.创建新几何面使用由单元面生成面工具（Face from element facestool）创建模型的表面几何形状。每使用一次该工具，所选择的孤立单元外表面就创建一个壳面。该工具包含几个独特的方法用于选择包含多个孤立单元的边界面，以及自动将新创建的面缝合到对应的几何体上。更多信息见“Create face from element faces,”Sectio

3、n 69.7.10。当你完成创建面后，所有的孤立单元外表面将被几何体面覆盖。2.移除多余的边及面使用Geometry Edittoolset中其它工具移除多余的边，小面，及对其它对生成好网格有影响的特征。如必须，将该零件转化为精确的几何体。更多信息见“A strategy for repairing geometry,”Section 69.43.生成实体如果需要一个实体part，在Create solid工具中，使用Create solid from shelltool可生成实体零件。4.分割及对part进行网格划分抑制或删除孤立网格，对part划分新网格。5.在对几何体修复完成后再分割pa

4、rt如果part中包含分割，Geometry Edittoolset将删除分割。为了避免这种问题，你应该在对part编辑完成后才能分割part。3.8Creating geometry from orphan elements(从孤立网格创建几何体)Product: Abaqus/CAEBenefits: You can now use orphan element faces to create geometric faces and, in turn, entire parts.好处：现在可以用孤立网格面创建几何面，然后建立整个实体。Description: You can create

5、geometric faces that follow the contour of orphan element faces. In addition to selecting orphan element faces individually and by angle, you can use the following new selection methods to choose orphan element faces from which to create new geometry: 描述：可由孤立网格面创建几何面。除了用一个一个的分别选择及角度方法外，可用下面新的选择方法选择孤

6、立网格面，并创建新几何面：Limiting angle:Enter a maximum angle, and pick a starting element face; Abaqus/CAE measures the angle from the selected face to each adjacent face. Selection continues outward from the picked face until the measured angle with the original face is exceeded.方法1。Limiting angle（极限角）：输入一个最大

7、角度，然后选择开始的单元面；Abaqus/CAE以选择的单元面为基准，测量与相邻面的夹角。Abaqus从选择的面继续向外选择面直到所寻找到的面的与原始面的夹角超过所给定的极限角。Layer:Specify a number of layers, and pick a starting element face; Abaqus/CAE selects element faces radiating out from one that you selected up to the number of layers. Selection continues until the number of l

8、ayers is reached or there are no more orphan element faces in a particular direction.方法2。Layer（层）：定义一些层，然后选择一个开始的单元面；Abaqus/CAE从你选择的单元面开始，直到所定义的层数。继续选择直到所定义的层数，或在指定的方向上没有孤立单元面。Analytic:Pick a starting element face, and Abaqus/CAE adds all faces that it determines to be part of the same analytic shap

9、e. Analytic shapes include planes, cylinders, cones, spheres, and tori. 方法3。Analytic（解析体方法）：选择开始的单元面，Abaqus/CAE增加认为是相同解析体上所有面。解析体包括平面，圆柱，圆锥，球，圆环。As you add faces, Abaqus/CAE stitches new faces to any existing geometry to produce a shell part. Figure 36 shows an orphan mesh part and the same part wit

10、h most faces converted into geometry. 你每增加一个面，Abaqus/CAE在存在的几何体上缝上新面，最终产生一个壳体，Figure 36 给出了一个孤立单元体及由面所形成的体。Figure 36 Converting orphan element faces to geometric faces.When you are finished creating new faces, you can use the other tools in the Geometry Edit toolset to repair the geometry if needed.

11、 Each face is created as a separate feature, and you cannot edit the faces that you create from element faces. However, you can add new geometry features, create a solid from the shell part, suppress or delete the orphan mesh, and create a new mesh for the part. 当创建新面结束后，如果需要可使用Geometry Edit toolset

12、中其它工具对几何体进行修整。每个面都具有独立特性，你不能对由单元面创建的面进行编辑。然后，你可增加新的几何特征，由壳体创建实体，抑制或删除孤立网格，对所创建的part划分新网格。A related enhancement in this release allows you to use orphan mesh faces as a sketch plane (for more information, see “Combining orphan and native mesh features in a model,” Section 12.2). 在Abaqus6.12中新增功能，允许你把

13、孤立单元面当作sketch plane（草图平面）（更多信息见“Combining orphan and native mesh features in a model,” Section 12.2).在模型中混合孤立网格及本地网格特性）Abaqus/CAEUsage:Part module: ToolsGeometry Edit: Face: From element facesReferences: Abaqus/CAE Users Manual“Using the limiting angle, layer, and analytic methods to select multiple

14、 element faces,” Section 6.2.6“Creating a part from orphan elements,” Section 69.5“Create face from element faces,” Section 69.7.106.2.6Using the limiting angle, layer, and analytic methods to select multiple element faces使用极限角、层、分析方法选择多个单元面When you are selecting orphan element faces to create geome

15、try (for more information, see“Create face from element faces,”Section 69.7.10), Abaqus/CAE displays a field in the prompt area. The field allows you to choose between five selection methodsindividually,by angle,by limiting angle,by layer, andby analytic, as shown inFigure 611.当你选择孤立单元面创建几何信息（更多信息见“

16、Create face from element faces,”Section 69.7.10），Abaqus/CAE在信息区显示选择项。有5个方法可供选择-单独、角度、限制角、层及解析体方法，如图Figure 611所示。Figure 611Choose the selection method from the field in the prompt area.The angle selection method is described in“Using the angle and feature edge method to select multiple objects,”Secti

17、on 6.2.3. The limiting angle, layer, and analytic methods are available only while selecting orphan element faces to create new geometric faces.角度选择方法见“Using the angle and feature edge method to select multiple objects,”Section 6.2.3. 限制角、层及分析方法是仅适用于选择孤立单元面创建新几何面。By limiting angle极限角Selecting object

18、s using a limiting angle is a two-step process:用极限角来选择对象分两步：In the prompt area, you enter an angle (from 0 to 90).1.在提示区输入角度，从0 到90。From the part or assembly, you select an orphan element face.2.在零件或组件中选择一个孤立单元面。The angle must be greater than the total angle between the selected element face and the

19、 element faces connected to it. Abaqus/CAE starts from the selected geometry and selects all adjacent geometry until the angle between the selected face and the last face in the series of adjacent faces meets or exceeds the angle you entered.Figure 612shows selection of element faces with a limiting

20、 angle of 45, and one of the vertical element faces below the rounded area is picked.输入角度必须大于所选择的单元面及与之相连接的面的夹角。Abaqus/CAE从所选择的几何体开始，选择所有与之相连接的几何，直到扩展的面与选择的面的夹角小于等于所输入的角度。Figure 612给出了一个极限角为45的例子，所选择的单元面是在圆弧下方的垂直单元面。Figure 612A limiting angle of 45 with a selected vertical face.Increasing the limiti

21、ng angle to its maximum of 90 would select the faces up to the top of the rounded section. In contrast, using the angle method with an angle of 13 or more would continue the selection around the rounded portion and down the far side since the angle between each adjacent face is less than 13.如果将极限角改为

22、最大值90，所选择的面将到达圆弧的顶部。相比之下，如果使用角度方法（angle method），将角度定义为13或更大，将包含半圆弧及对面的垂直面，这是由于每个相联面的夹角小于13。By layer层Selecting objects using the layer method is a two-step process:用层来选择对象分两步：In the prompt area, you enter a number of layers.1.输入层数。From the part or assembly, you select an orphan element face.2. 在零件或组件

23、中选择一个孤立单元面。Abaqus/CAE starts from the selected face and selects layers of adjacent element faces around it in all directions. Selection continues around corners and other features until the number of layers is reached or until there are no more adjacent orphan element faces.Abaqus/CAE从选择的面开始，在任意方向选择

24、相邻单元面的层。选择围绕着角落，以及其它特征，直到达到层数或没有可供选择的孤立单元面。Figure 613illustrates the selection of three layers of orphan shell element faces around a starting face and the resulting geometric face.Figure 613给出一个围绕开始面的3层孤立壳单元面的选择，以及产生的几何面。Figure 613Face layer selection and creation of a geometric face.As shown inFig

25、ure 613, layer selection can traverse sharp corners and other model features that would normally signify the end of a geometric face. In most cases you should preserve logical model edges and other features by creating separate faces. Otherwise, the resulting geometry may be difficult to repair and

26、mesh.如图Figure 613所示， 层选择能穿过锐角转角及其它模型特性，它通常象征最后的几何面。在很多情况下，你将通过建立分离面来维持逻辑模型边和其它特征。否则，产生的几何将很难修复及画网格。Note:When you are working with solid orphan elements, selections that include multiple faces from the same orphan element are not acceptable for the creation of a single geometric face.注意：当你处理实体孤立单元，不能

27、选择包括多个面的孤立单元来创建单个几何面。By analyticThe analytic selection method for orphan element faces is based on the recognition of basic shapes in analytic geometry (such as planes, cylinders, cones, spheres, and tori), or portions of these shapes. Analytic selection attempts to recognize the logical boundaries

28、of a set of orphan element faces that would make a recognizable geometric face.解析体方法：分析选择方法选取孤立单元面是认为基本形状是解析体（如平面、圆柱、圆锥、球及圆环），或是解析体的一部分。解析体选择试图承认将要由孤立单元面创建的几何面集合逻辑边界条件Figure 614illustrates analytic selection of orphan element faces. A spherical section of element faces is highlighted; this selection

29、 could not be made using any of the other selection options for multiple objects.图Figure 614给出了一个用解析体方法选择孤立单元面的例子。球形单元截面被选中；这种选择用其它的方法无法实现。Figure 614Analytic geometry selection.After you use any of the above methods, you can select other methods in the prompt area andShift+Clickto append more elemen

30、ts to your selection. You can alsoCtrl+Clickon items to unselect them. In addition, you can continue to use the current method and useShift+Clickto append elements to your selection. For more information, see“Combining selection techniques,”Section 6.2.8.但你使用上面的任一方法，你能在提示区选择其它方法，然后用Shift+Click增加更多的单

31、元到你的选择中。你也可用Ctrl+Click删除单元从你的选择集中。此外，你能继续使用当前方法及Shift+Click增加单元到你的选择集中。更多信息见“Combining selection techniques,”Section 6.2.8.For information on related topics, click any of the following items:“Understanding selection within viewports,”Section 6.1“Selecting objects within the current viewport,”Section

32、 6.2“Create face from element faces,”Section 69.7.1069.5Creating a part from orphan elements（从孤立单元创建零件）You can use tools from theGeometry Edittoolset to create geometry from the faces of orphan mesh elements. This technique is useful when you have a meshed part that requires modifications, but you do not have some or all of its geometry available. The decision