always draw______________________ to the xy plane for autocad 3d drawings

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

When using a cartoon airplane, the FEA Editor environment is in sketch mode. Hence, the terminology sketch and drawing aeroplane will be used interchangeably.

Create a aeroplane

Additional planes can exist created past using Draw Describe New Sketch Airplane, or by right-clicking on the Planes co-operative of the tree view and choosing New Airplane.

Yous can select between the iii planes parallel to the global axes (XY, YZ or XZ). You can also select the Advanced option or the three points option to define an off-axis airplane. Activating the Use First cheque box will allow you to offset 1 of the global planes from the origin. A positive offset places the plane in the positive direction. For case to draw in the X=x plane, select the YZ option, activate the Use Offset check box and blazon ten in the adjacent field.

Enter, use, and exit Sketch Way

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

Geometry is added to the sketch simply similar any other geometry: use the commands on Draw and Design panel of the Draw tab. All properties such as role, surface, and layer number, and any object-specific input, are used in the sketch mode merely like it is in the 3D mode. (See the page Adding Geometry for details.) The only real deviation between calculation these objects in 3D manner versus adding them in sketch mode is whether the entered points snap to the cartoon airplane or not.

When cartoon sketch entities, if the cursor is shut to a grid point, a lock icon will appear on the cursor. If you click, the detail you are drawing will exist snapped to that grid point. Besides, you can snap the new geometry to existing geometry. The points will be projected into the drawing plane.

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

To exit sketch fashion, right-click the drawing plane and conciliate Sketch. Also, activating the sketch mode for another plane will deactivate the sketch mode for the electric current plane.

Copy between sketches

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

• Modify Aeroplane. All construction objects assigned to a sketch (the Aeroplane entry in the tree view listed under the part) tin can be moved or copied to a dissimilar plane. Right-click the sketch entry and cull Change Plane. The Transfer to Unlike Plane dialog will announced and list the available planes in the Target Plane drib-downwardly. (If necessary, create the new target plane beforehand using Draw Draw New Sketch Airplane.) If the Copy to target airplane option is not activated, the selected sketch will exist moved to the target airplane. When the two planes are parallel, the motility or copy operation is straight forrard. When the two planes are not parallel, and so the transformation may be harder to visualize (but is still straight forrad). 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 airplane with the aforementioned (U,Five) coordinates, and then converted to 3D coordinates. And so, if a construction line is from (0, three, 4) to (0, 6, 8) and sketched in the global YZ plane, it would parameterize equally a line from (3,4) to (6,8) in (U,V) space. These same (U,V) coordinates in the global XY airplane would transform to a line from (3, 4, 0) to (half-dozen, 8, 0) in 3D space. Note that the part, surface, and layer number of the structure objects are not inverse, then the branch for the new sketch appears in the same part equally the original sketch.
• Copy and Paste. Private construction objects in one sketch of a function tin be copied (or cut) and pasted into the same sketch plane in some other part. Select the objects (either in the tree view or in the brandish area), correct-click and choose Copy or Cut. Then select the target sketch plane in the tree view, right-click, and choose Paste. Likewise, yous can drag the entries from the sketch in one role to the same sketch plane in another office and drop them into the sketch. Naturally, this operation requires that the target sketch exists in the target part. Other than changing the part number of the copied object, the surface and layer number remains the same.

Notation: If a construction object in a sketch is selected and changed with the Draw Pattern Move or Re-create control, then the object is no longer associated with a sketch. It becomes a 3D Object and is listed in a dissever co-operative under the office.

Catechumen from 3D objects to a sketch

At that place are situations in which a structure object is not in a drawing plane, so the tree view lists the item as a 3D object. Some commands are not bachelor on 3D construction objects, such as 2D meshing. These 3D objects tin can be copied to a sketch as follows:

1. Select the 3D construction objects with the Option Select Structure Objects command.
2. Copy or cutting the objects to the clipboard. Right-click and choose either Cut or Copy.
3. Activate the drawing plane into which the objects should go. (Correct-click the appropriate aeroplane under the Planes branch of the tree view and choose Sketch.)
4. Paste the 3D objects into the role. Right-click the part proper name in the tree view and choose Paste. Note that the object must be pasted into a sketch on a unlike role than the original objects.

Notation that the original 3D construction object is not projected into the cartoon plane. Therefore, the object should lie in the plane into which it is beingness pasted.

Calculate the properties of a sketched region

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

• Draw the region to exist calculated using structure objects.
• Describe the objects while in sketch mode.
• The objects tin can exist in unlike parts merely need to exist in the same drawing airplane. The combination of all parts on all selected sketches will ascertain the region or regions.
• Any cartoon plane tin can be used. The results will be in the local coordinates of the aeroplane.
• The sketch must enclose an area or multiple areas.
• Holes within the surface area are permitted.
• Regions can overlap, in which case the overlap region is calculated as if information technology were a hole, merely dissever regions should not affect. Run across the post-obit figure.

(a) Two overlapping regions (higher up) are supported past the 2nd Moment of Inertia computer. The overlapping region between the square and the circle is interpreted as a hole in the cross section. The calculations are based on shaded the regions (below).

(b) Ii regions that do non overlap (above) are not supported past the 2d Moment of Inertia calculator. When the control is executed, the trouble areas are identified with the inverted triangles (below) . To calculate this area, remove the line in common between the square and the semi-circle, creating a unmarried, contiguous region. (Alternatively, duplicate lines could be used where the regions meet—one for the square and one for the semi-circle. For instance, indistinguishable lines are required if the square and semi-circle belong to separate parts, and the 2 regions will exist meshed with the second mesh engine.)

One time the sketches are made, either select the plane in the Planes branch of the tree view or select the plane entries in the tree view under the part, so right-click, and choose 2D Moment of Inertia. Selecting the Planes co-operative is equivalent to selecting each of the private planes appearing under each part. The computer will split 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 post-obit:

• Area
• Heart of Gravity location, given in local coordinate system of the plane (u,five). The global coordinates of the center of gravity can exist determined by inquiring on the construction vertex that is added to the model.
• Surface area moment of inertia about the horizontal and vertical axes of the plane (u and v axes) passing through the eye of gravity of the sketch. The orientation of these axes is given equally a vector in global coordinates in the Local Orientation

A construction vertex is also 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 separate the sketch into rectangular strips. The height of the sketch (in the v direction) is divided into the number of divisions specified under the Options Sketching tab.

The Salve Results dialog will appear when the Save push button is clicked. Choose the file name and location of the expanse adding results. Actuate the Append cheque box on the Save Results dialog before clicking the Salvage button to suspend the current results to an existing file. Otherwise, the existing file volition be overwritten with the current results.

Similar calculations can exist performed on fully meshed models by using the Analysis Analysis Weight and Center-of-Gravity command. See the page General Options: Weight and Center of Gravity Reckoner.

segerspostencell.blogspot.com

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

Share this post