Autodesk algor simulation professional 2011 free
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Geometry: Use the Exercise K. Loads: 1, pounds upward force will be applied at the extended underside of the sliding latch. Constraints: The four bolt holes will be fully constrained. Elements: Brick — An absolute mesh size of 0. Two surface contact pairs should be created: 1. Between the sliding latch and the housing 2. Navigate to the directory where the model input file is located. Select the Exercise K. For the latch assembly, the contact areas include the interface between the sliding latch and the housing and between the sliding latch and the base plate.
For the purpose of this example, the remaining part interfaces will be bonded. The default contact option of “Bonded” will be kept and two contact pairs will be defined as “Surface Contact,” overriding the default. This type of contact will prevent the surfaces from penetrating each other, but will allow them to pull away from each other or slide relative to each other with no resistance.
Mouse Click on the heading for Part 2 in the tree view the housing. Mouse Click on the heading for Part 3 in the tree view the base plate. This will open the material selection screen. Mouse Select the “Material” heading for Part 2 in the tree view. Select the “Modify” pull-out menu and select the “Modify: Material…” “Material…. Double-click on the “Material” heading for Part 4 in the Mouse tree view. Select the “Circle” command. This will allow you select objects within a circular selection zone.
This will set a filter to allow you to select surfaces. Click near the center of one of the bolt holes and drag the Mouse mouse to make a circular selection area large enough to encompass the ID surfaces of one bolt hole. Click just inside the top edge of the ViewCube face, about midway between the top corners.
A light blue rectangle Mouse will indicate the correct clicking zone. This will provide an oblique view of the assembly with the back of the sliding latch visible.
This will allow you select objects by clicking on them. Mouse Click on the surface at the back end of the sliding latch. Enter “” in the “Stiffness” field. This soft boundary provides stability during the contact solution by preventing rigid-body motion but is small enough to produce an insignificant reaction at the surface for the converged solution.
Click on the surface at the extended underside of the sliding Mouse latch. Mouse Activate the “Z” direction radio button. The model will be displayed in the Results environment. Viewing the Results There are many options available in the Results environment to customize the presentation of results.
For this exercise, the stress range and the legend box precision and font will be modified. Mouse Select the “Legend Properties” tab. Using the down-arrow next to the “Precision” field, Mouse decrease the precision from 7 to “5”.
Select the “16” option in the “Size:” field. Note that you “16” can also change the font to any of the TrueType fonts listed. Mouse Select the “Range Settings” tab. Deactivate the “Automatically calculate value range” Mouse checkbox. Type “” in the “High” field. Any areas with stresses larger than this value will now be rendered using the highest color in the legend box typically red.
One common use of this feature is to set the value to the yield stress of the material in order to quickly see what areas of the model may have yielded. Another is to bring out the full range of colors when focusing on more lowly stressed regions of the model.
To review a completed archive of this exercise, refer to the file Exercise K. Geometry: Use the Exercise L. Select the Exercise L. Mouse Click on one of the surfaces of the largest hole. Rotate the model slightly, if desired, to clearly see both surfaces of the hole. Type “1. Mouse Click on one of the surfaces of the second largest hole.
Type “28” in the “Temperature Independent Convection 28 Coefficient” field. The model will be Analysis…” displayed in the Results environment and solved. The small circles on the surfaces of the two largest holes indicate the applied surface convection loads. Click the Mouse “Toggle Load and Constraint Display” toolbar button to turn off the display of the load and constraint symbols.
Your screen should now look similar to Figure L1. Click on a node on the top face hot end of the model. The “Inquire: Results” dialog will report that the temperature Mouse is somewhere between To review a completed archive of this exercise, refer to the file “Exercise L.
Define surface to surface contact to produce the proper component interaction. Produce a von Mises stress animation as well as a graph showing the displacement magnitude versus time at the drive wheel’s indexing pin and at the OD of the driven wheel. Geometry: Use the Exercise M. See next page for meshing, geometry modification, and contact setup instructions.
Constant 2 lbf. Nodal lumped mass at Joint 4 — Uniform mass of 0. Disable “Automatic” tolerance control. Use surface for the 1st contact pair, for the 2nd, and for the 3rd. Select the Exercise M. Mouse Click on the Part 1 heading in the tree view. Right-click on one of the selected two headings, access the Mouse “Contact” pull-out menu, and select the “Surface Contact” “Contact: Surface Contact” command.
Nonlinear contact occurs between a node and an element face rather than between pairs of nodes, as is the case for linear contact. For this reason, it is best if the meshes between adjacent contact parts are not matched. By default, meshes are not matched for MES contact pairs. That’s why it’s important to define surface contact between parts 1 and 2 prior to meshing.
Later, we will modify the geometry and the contact definitions, localizing the contact calculations to include only those surface pairs where contact will actually occur. This will be done to minimize the number of contact calculations the solver must perform and to speed up the analysis. We will also specify an absolute mesh size of 0. The program’s default geometry-based mesh sizing function will automatically provide finer elements around the circumference of the small pin, resulting in an acceptable mesh without further refinement.
Select “Absolute mesh size” “Absolute mesh size. Modifying the Model We will now select lines on the surface of the wheels and modify their surface number attribute so that they are conveniently grouped into the desired contact surfaces.
Click and drag the middle mouse button to temporarily Mouse enter the rotate view mode. Rotate the model so that the underside of the wheels can be seen. Click on the bottom surface of the drive wheel the disk and Mouse not the shaft — Part 1, Surface Then right-click and choose “Hide” the “Hide” command. Select the “Polyline” command. Refer to Figure M1. Clicking multiple times with the mouse, draw a selection polyline enclosing all of the lines of the first contact pair surfaces including both the drive Mouse and the driven wheel.
Be sure to include the chamfers on both wheels. The lines should be highlighted in magenta as shown in Figure M1. The yellow outline represents the selection polyline. Refer to Figure M2. Be sure to include the chamfer. Clicking multiple times with the mouse, draw another selection polyline enclosing all of the lines of the second contact pair surface that belong to the driven wheel. Be sure to include the two chamfers. The lines should be highlighted in magenta as shown in Figure M2.
The yellow outlines represent the selection polylines. Otherwise, the prior selection will be discarded. Click on the upper left half of the indexing pin’s cylindrical Mouse surface. Mouse In the tree view, right-click of the heading for Part 1 and “Hide” select the “Hide” command. Click and drag the mouse to create a selection box enclosing the driven wheel’s lines that belong to the third contact surface.
This will be the slot at the left side of the Mouse display. Include the chamfers at the outside end of the slot but not at the inside end. The lines should be highlighted in magenta as shown in Figure M3. The yellow outline represents the selection box. Right-click on the Part 1 heading and select the “Show” Mouse command, restoring the visibility of this previously hidden “Show” part.
Right-click on the “Surfaces” heading under Part 1 in the Mouse tree view. Select the “Show All Surfaces” command. The “Show All Surfaces” bottom surface of the drive wheel will reappear. Before proceeding further, save the work performed thus far “File: Save” by accessing the FILE pull-down menu and selecting the “Save” command.
Defining Surface Contact Pairs and Parameters Now that the proper surface line assignments have been applied to the model, we will go into the “MES: Surface-to-Surface Contact” dialog and set up the three contact pairs and their specified parameters. Contact…” Mouse Using the pull-down menu in the “First Surface” field at “” the top of the dialog, select surface ” Mouse Using the pull-down menu in the “First Part” field, select “1” part “1.
In the first row Pair 1 of the Contact Pairs table, click on Mouse the “Parameters” column currently showing “Default”. To conveniently duplicate these contact settings for the Mouse remaining two pairs, access the pull-down menu at the “To “All” Pair” field and select “All. Click the “Yes” button to verify that you want the parameters copied from the source pair 1 to all other pairs. Creating the Joints We will next create the four joints used to rotationally mount the two Geneva wheels.
Click on the bottom, end surface of the drive wheel’s center Mouse shaft Part 1, Surface Click on the bottom, end surface of the driven wheel’s Mouse center shaft Part 2, Surface 4.
Click on the top, end surface of the drive wheel’s center Mouse shaft Part 1, Surface 9. Click on the top, end surface of the driven wheel’s center Mouse shaft Part 2, Surface Mouse Access the pull-down menu at the “Joint” field and choose “Universal Joint lines to axis “Universal Joint lines to axis midpoint.
Defining Element and Material Data Next, we’ll define the element type for the joints and the element definitions and materials for each part of the assembly. The element type for the Geneva wheels will have already been set to brick. Click on the “Element Definition” heading under Part 1 in Mouse the tree view. Double-click on the “Material” heading under Part 1 in the Mouse tree view.
Click on the plus sign to the left of the “Brass” folder to Mouse expand this branch. Double-click on the “Material” heading under Part 2 in the Mouse tree view. We will set the element type, element definition, and material properties for all four joints simultaneously. Mouse Click on the “Part 3” heading in the tree view.
Parts 3 through 6 should now be highlighted. Once again, right-click on a selected heading, access the Mouse “Modify” pull-out menu, and select the “Element Data” “Modify: Element Data…” command. Mouse Double-click in the “Outside diameter” field and type the 0. One more time, right-click on a selected heading, access the Mouse “Modify” pull-out menu, and select the “Material…” “Modify: Material…” command. Mouse Double-click in the “Modulus of Elasticity” field and enter e6 the value “e6”.
All other values remain at zero. These consist of the nodal loads and constraints at the joint center-points and the part-based load initial velocity to be applied to the drive wheel. Select the “Front View” View” command. Click and drag the mouse to draw a selection window Mouse enclosing the two center-nodes of the bottom two joints 1 and 2.
Click and drag the mouse to draw a selection window Mouse enclosing the two center-nodes of the top two joints 3 and 4. Click on the center-point of Joint 3 upper-left. Be sure Mouse to select the vertex and not the previously applied boundary condition. This value ensures that the prescribed 1 displacement remains active throughout the simulation event. Click on the center-point of Joint 4 upper-right. Mouse While the joint 4 center-point is still selected, right-click “Add: Nodal Lumped again, access the “Add” pull-out menu, and select the Mass…” “Nodal Lumped Mass…” command.
Right-click on the heading for Part 1 in the tree view. Mouse Double-click in the “Z” field under the “Rotational 30 Magnitude” heading and type “30” in this field. We will now define the analysis parameters.
Mouse Double-click in the “Capture Rate” field and enter “90”. Deselect the “Automatic” checkbox to the right of the Mouse “Displacement Tolerance” field. Mouse Double-click in the “Displacement Tolerance” field and 0. NOTE: Depending upon the computer hardware, this analysis may take an hour or several hours to run.
Viewing the Results We will review the stress results for time step 44 when the peak stress occurs , create and export a graph showing the displacement magnitude as a function of time, and create an animation showing the stress results for the whole simulation. We will also turn off the display of contact diagnostic probes so that they will not appear within the animation. They do not necessarily indicate a problem, since slight, localized penetration is not uncommon and may be insignificant.
Contact behavior is influenced by the mesh density, mesh smoothness, and contact stiffness. Chatter is generally the result of excessive contact stiffness and makes convergence more difficult. Click the “Toggle Load and Constraint Display” toolbar Mouse button to turn off the display of the load and constraint symbols.
This Mouse will place a flag at the peak von Mises stress location. Mouse Click on the heading for Part 2 in the tree view. Right-click on a selected heading and choose the “Hide” Mouse command. This will improve the visibility of the peak stress, “Hide” which is on the drive wheel’s indexing pin. Click and drag the middle mouse button to temporarily enter the rotate view mode. Rotate the model for a better Mouse view of the peak stress area.
If desired, roll the wheel to zoom in somewhat. The annotation and legend will indicate the maximum stress value. This stress should be approximately 5, to 5, psi and will be in the contact area of the indexing pin.
Contact stresses are rather sensitive to surface mesh and contact settings changes, so expect different peak values for modeling variants. The screen image should resemble Figure M4. Click on a node on the top, end face of the drive Mouse wheel’s indexing pin. Choose the node that is furthest from the centerline of the wheel. Right-click in the graph display area, access the “Font Mouse Size” pull-out menu and select the “Large” option. Select the “File” radio button under the “Export “File” Destination” heading.
Mouse Double-click on the “Width” field under the “Export Size” heading and enter “”. Using the pull-down menu in the “DPI” field, choose Mouse “,” which is the closet value to the typical computer “” screen’s resolution.
Before making the stress animation, let’s override the default legend range for the plot. This will be done for the following two reasons: 1. To make the correlation between stress level and plot color consistent for all video frames—otherwise, the stress range in the legend will be recalculated for each frame based on the minimum and maximum stress result at that time step only. Because the high contact stresses are localized and the typical stresses in the two wheels are much lower—changing the display range to a lesser maximum value will bring out a broader range of color throughout the assembly and reveal the more typical and lower stress values.
Rotate the model to a good Mouse viewpoint for creating the animation AVI file. Also, roll the mouse wheel to zoom in or out as desired. Or, click on the Export Animation toolbar icon. We will keep the default settings for frames per second, start and end steps, step increment, and video compression. Mouse Double-click in the “Width” field and type “”.
Click twice slowly in the “File name” field at the end of the default name, the first click selects the name, the Mouse second one positions the cursor just before the point. Click the “Yes” button when asked if you want to view “Yes” the animation now. Use the Analysis Replay controls to play, pause, or rewind the animation. If the stress exceeds the yield stress of 36, psi, run another analysis using a plastic material model.
Geometry: The beam shown below is 10 feet long. Loads: 56, pound force downward -Y direction at the free end. Constraints: Fully constrained at one end. Click on the arrow button to the right of the analysis Mouse type field. Note the default folder location Exercise N where the analysis files will be created. Select the “Top View” command. Select the “Line…” command to access the “Define Geometry” dialog. Select the “Divide…” command to bring up the “Divide Lines” dialog.
Type “20” in the “Number of Lines:” field in the 20 “Divide Lines” dialog. Right-click on the “Element Definition” heading Mouse for Part 1 in the tree view. Select the “Rectangular” option in the drop-down “Rectangular” box in the upper right corner. Right-click on the “Material” heading for Part 1 in Mouse the tree view.
Draw a box around the vertex at the left end of the Mouse beam. Press the “Fixed” button in the “Predefined” “Fixed” section. Draw a box around the vertex at the right end of the Mouse beam. Right-click on the “Analysis Parameters” heading Mouse in the tree view. The model “Analysis: Perform Analysis…” will be displayed in the Results environment while the solution is progressing. Choose the Stress” “Worst Stress” command. Therefore, a nonlinear material model is necessary.
We will create a second design scenario within the model for the non- linear run. Before doing so, we will check the displacement magnitude to compare with the later results, which will consider plastic deformation. Choose the “Magnitude” Magnitude” command. The maximum displacement magnitude should be about 2. We expect this number to be less than the actual displacement with plastic deformation considered. Right-click on the “Design Scenario 1” heading in the tree Mouse view and select the “Copy” command.
Right-click on the “Design Scenario 1” heading in the tree Mouse view and select the “Rename” command. Right-click on the “Design Scenario 2” heading in the tree Mouse view and select the “Rename” command.
You now have two design scenarios defined within the model, one for the elastic isotropic material model and one for the non-linear von Mises with isotropic hardening material model. Double-clicking on an inactive scenario heading will make it the active scenario. We will now modify the element data for the second design scenario to specify the non-linear material model.
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Mouse Click on the Part 1 heading in the tree view. The material properties are independent of direction. Disable “Automatic” tolerance control. Mouse Activate the “Rz” checkbox.