How to Shift Plane Drawing

Drawing planes are used to add geometry to the model. Instead of the freedom of adding the geometry in 3D space, the geometry is ever snapped into the plane. In addition to the obvious advantage of being able to describe flat geometry, regions created with construction objects drawn in a aeroplane can be meshed with the 2D mesher. See the page Meshing Overview: Meshing Hand-built Models: 2d Mesh Generation for details.

When using a drawing plane, the FEA Editor surroundings is in sketch fashion. Hence, the terminology sketch and cartoon plane volition exist used interchangeably.

Create a plane

Additional planes tin be created by using Depict Draw New Sketch Aeroplane, or by right-clicking on the Planes branch of the tree view and choosing New Airplane.

You tin select between the three planes parallel to the global axes (XY, YZ or XZ). You tin can also select the Advanced option or the three points option to define an off-axis plane. Activating the Use Offset check box volition allow y'all to beginning one of the global planes from the origin. A positive kickoff places the plane in the positive direction. For example to draw in the X=ten plane, select the YZ pick, activate the Use Offset check box and type 10 in the adjacent field.

Enter, employ, and exit Sketch Way

To enter sketch manner to depict on a plane, correct-click the desired cartoon plane in the tree view and cull Sketch. When in sketch mode, a grid will appear in the brandish area and the drawing plane is shown in assuming in the tree view. All sketching will exist done in this plane. The filigree can be turned off by right-clicking on the plane in the tree view and clearing Visibility. The spacing of the grid can exist customized on the Options Sketching tab.

Geometry is added to the sketch simply similar whatsoever other geometry: utilize the commands on Depict and Design panel of the Describe tab. All properties such as part, surface, and layer number, and any object-specific input, are used in the sketch mode merely like it is in the 3D mode. (Meet the page Calculation Geometry for details.) The only real difference between adding these objects in 3D mode versus adding them in sketch mode is whether the entered points snap to the cartoon plane or non.

When cartoon sketch entities, if the cursor is close to a filigree bespeak, a lock icon will appear on the cursor. If yous click, the particular you are drawing will be snapped to that grid indicate. Likewise, you can snap the new geometry to existing geometry. The points will exist projected into the drawing plane.

When an item is added to a sketch, a branch is created nether the appropriate part that lists the drawing plane, and this branch includes an entry for each item drawn in that sketch. Click the drawing plane entry under the part to highlight the respective items.

To exit sketch manner, correct-click the drawing airplane and deactivate Sketch. Also, activating the sketch mode for some other aeroplane will deactivate the sketch style for the electric current plane.

Re-create between sketches

Here are the ways to re-create items or sketches to other sketches:

• Change Plane. All construction objects assigned to a sketch (the Plane entry in the tree view listed under the office) tin be moved or copied to a different plane. Right-click the sketch entry and choose Change Plane. The Transfer to Dissimilar Plane dialog will appear and list the available planes in the Target Plane driblet-down. (If necessary, create the new target aeroplane beforehand using Draw Draw New Sketch Plane.) If the Re-create to target plane choice is non activated, the selected sketch will be moved to the target aeroplane. When the two planes are parallel, the movement or copy performance is straight forwards. When the 2 planes are not parallel, then the transformation may exist harder to visualize (but is still straight forward). The 3D coordinates of each object are converted or projected to local (U,V) coordinates within the existing sketch. The objects are placed in the target plane with the same (U,V) coordinates, so converted to 3D coordinates. So, if a structure line is from (0, 3, iv) to (0, 6, viii) and sketched in the global YZ plane, information technology would parameterize as a line from (3,4) to (6,eight) in (U,V) space. These aforementioned (U,V) coordinates in the global XY plane would transform to a line from (3, 4, 0) to (6, 8, 0) in 3D space. Note that the part, surface, and layer number of the construction objects are non changed, so the branch for the new sketch appears in the same function as the original sketch.
• Copy and Paste. Individual construction objects in one sketch of a part tin can be copied (or cutting) and pasted into the aforementioned sketch airplane in another function. Select the objects (either in the tree view or in the brandish area), right-click and cull Copy or Cut. And so select the target sketch plane in the tree view, right-click, and choose Paste. Too, you tin can drag the entries from the sketch in i office to the same sketch plane in another part and drib them into the sketch. Naturally, this operation requires that the target sketch exists in the target role. Other than changing the role number of the copied object, the surface and layer number remains the same.

Notation: If a structure object in a sketch is selected and changed with the Draw Design Move or Re-create command, then the object is no longer associated with a sketch. It becomes a 3D Object and is listed in a carve up co-operative under the function.

Convert from 3D objects to a sketch

There are situations in which a construction object is non in a cartoon plane, so the tree view lists the item equally a 3D object. Some commands are not available on 3D construction objects, such as 2nd meshing. These 3D objects tin be copied to a sketch as follows:

1. Select the 3D structure objects with the Option Select Structure Objects command.
2. Copy or cut the objects to the clipboard. Right-click and cull either Cut or Re-create.
3. Activate the drawing aeroplane into which the objects should go. (Correct-click the advisable aeroplane under the Planes co-operative of the tree view and cull Sketch.)
4. Paste the 3D objects into the part. Right-click the part name in the tree view and choose Paste. Note that the object must be pasted into a sketch on a different role than the original objects.

Note that the original 3D structure object is not projected into the drawing plane. Therefore, the object should lie in the plane into which it is being pasted.

Calculate the properties of a sketched region

The cross sectional properties of a sketch can be calculated. The guidelines for the sketch or sketches are as follows:

• Draw the region to be calculated using structure objects.
• Draw the objects while in sketch manner.
• The objects tin can exist in dissimilar parts but need to be in the same drawing plane. The combination of all parts on all selected sketches will define the region or regions.
• Any drawing plane tin can be used. The results will be in the local coordinates of the plane.
• The sketch must enclose an area or multiple areas.
• Holes inside the area are permitted.
• Regions can overlap, in which case the overlap region is calculated as if it were a hole, but dissever regions should not touch. See the post-obit figure.

(a) Two overlapping regions (in a higher place) are supported by the 2nd Moment of Inertia calculator. The overlapping region between the foursquare and the circle is interpreted equally a hole in the cantankerous section. The calculations are based on shaded the regions (below).

(b) Two regions that do not overlap (above) are not supported by the 2d Moment of Inertia calculator. When the command is executed, the problem areas are identified with the inverted triangles (below) . To calculate this area, remove the line in common betwixt the square and the semi-circle, creating a single, contiguous region. (Alternatively, duplicate lines could exist used where the regions meet—one for the foursquare and one for the semi-circle. For example, duplicate lines are required if the square and semi-circle belong to carve up parts, and the 2 regions volition be meshed with the 2nd mesh engine.)

Once the sketches are made, either select the airplane in the Planes co-operative of the tree view or select the plane entries in the tree view under the part, then right-click, and choose 2D Moment of Inertia. Selecting the Planes branch is equivalent to selecting each of the private planes appearing under each part. The figurer will carve up the combined sketches into a series of horizontal rectangular strips and perform a numerical integration based on these strips. The results are given in the 2D Moment of Inertia Results dialog and consist of the following:

• Area
• Center of Gravity location, given in local coordinate organization of the plane (u,v). The global coordinates of the heart of gravity tin can be determined by inquiring on the construction vertex that is added to the model.
• Expanse moment of inertia about the horizontal and vertical axes of the airplane (u and v axes) passing through the center of gravity of the sketch. The orientation of these axes is given as a vector in global coordinates in the Local Orientation

A construction vertex is too added to the model at the location of the center of gravity.

Tip: The accuracy of the calculation depends on the number of divisions used to dissever the sketch into rectangular strips. The pinnacle of the sketch (in the 5 direction) is divided into the number of divisions specified under the Options Sketching tab.

The Save Results dialog will appear when the Salve button is clicked. Choose the file name and location of the area calculation results. Activate the Append check box on the Salvage Results dialog before clicking the Save button to suspend the current results to an existing file. Otherwise, the existing file will be overwritten with the current results.

Similar calculations tin be performed on fully meshed models by using the Analysis Analysis Weight and Heart-of-Gravity command. See the page General Options: Weight and Center of Gravity Calculator.

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Source: https://knowledge.autodesk.com/search-result/caas/CloudHelp/cloudhelp/2015/ENU/SimMech/files/GUID-76FAF0C3-E0D6-4964-A181-A0842FEAE346-htm.html

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