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How to add your knowledge
Table of contents
“Help: About” in Autodesk Algor Simulation identifies the software as
Autodesk Algor Simulation 2011
Build 2011.00.00.nnnn dd-Mar-2010
(where nnnn and dd are set during the final build of the software)
The “Help: About” title bar indicates whether the 32-bit or 64-bit version is being used.
CAD Interfacing and Meshing
- Added support for Autodesk Inventor Fusion. If Fusion is installed on the same computer, the loads applied in Autodesk Algor Simulation will be associative with the Fusion model; so, loads and properties applied to the FEA analysis will be re-applied if the Fusion model is changes and transferred to Autodesk Algor Simulation. From within Fusion, use the Algor command on the Home tab, Simulation panel to transfer the model to Autodesk Algor Simulation. If Fusion is not installed on the computer, the drawings (.dwg) can still be opened directly from Autodesk Algor Simulation from the File: Open menu with the Files of Type set to Inventor Fusion.
- New Meshing Results presentation to help users find/fix CAD meshing issues. Parts/Surfaces that produce errors during meshing turn into links that, when clicked, zoom to the area and highlight the bad areas, as shown below. This will help users pinpoint possible CAD modeling errors. See Mesh Results for more information.
- Added support for Autodesk Inventor Simulation. Now in addition to importing CAD geometry and part materials, users can also import applicable loads and constraints applied in Inventor Simulation. This allows users to bring their existing static stress or modal analyses into Algor Simulation for additional simulation options. See Autodesk Inventor Simulation for more information.
- Added support for Autodesk AutoCAD .DXF and .DWG files. Users can now import AutoCAD models as either Wireframe or 3D Surface/Solids models. This gives users the option to import solid objects and use the Algor Simulation 3D mesh engine. See following links for more information about Import CAD Wireframe Files and Import CAD Solid Models without CAD Application.
- The following CAD model types can be opened directly in Autodesk Algor Simulation even if the corresponding CAD application is not installed on the same computer: Autodesk Inventor and Autodesk Mechanical Desktop. Previously, these formats needed to be saved to a universal format (.SAT, .IGS, or .STP) and opened with Autodesk Algor Simulation.
- The Mesh: Enhance Surface Mesh command now preserves the lines on the user-specified layer as well as lines on layer 14 and layer 15 (from a mesh of a CAD solid model). See the page Meshing Overview: Surface Mesh Enhancing: Options Button: Mesh Shape and Quality for details.
- Corrected a problem with generating an automatic 2D mesh. If the 2D Mesh Generation is performed repeatedly on the same sketch, such as trying different mesh densities, the model could have gotten to a state that would fail during an analysis or Check Model. (The mesh would have looked distorted in the Results environment.) This no longer occurs.
Fluid Flow
- Simplified the appearance of the Analysis Parameters. The Options tab has been combined into the Solution tab. The controls used most often are shown on the tab: the Formulation (segregated, mixed GLS, etc.) and the Type of solver (sparse, iterative, etc.). The parameters for these controls are accessible on a separate dialog by clicking the >> button. See the pages Setting Up and Performing the Analysis: Fluid Flow: Analysis Parameters: Steady or Unsteady Fluid Flow: Formulation Options and Solver Options for details.
- Corrected a calculation with 2D triangular elements in steady fluid flow which could have led to incorrect results.
Heat Transfer
- Analysis: Check Model now uses the processor to check additional input (material properties, etc.) which helps to insure that the input is sufficient for an analysis. Naturally, the user still needs to inspect the model in the Results environment to confirm that the model represents the intended analysis.
Linear Stress
- The material properties for Injected molded parts can be obtained from an Autodesk Moldflow simulation. The Moldflow anisotropic material properties provide a more accurate stress analysis in Autodesk Algor Simulation compared to using homogeneous, isotropic material properties or anisotropic material properties that do not consider the changing orientation of the filler. See the page Setting Up and Performing the Analysis: Multiphysics: Using Results in Another Analysis: Injection Molded Parts - Material Properties From Autodesk Moldflow for details. (Also see Other: below.)
The solid model of a plastic phone cover (left) is analyzed in Autodesk Moldflow to calculate the time to fill the mold (center). The varying anisotropic material properties are then incorporated into the stress analysis in Autodesk Algor Simulation (right).
- Analysis: Check Model now uses the processor to check additional input (material properties, etc.) which helps to insure that the input is sufficient for an analysis. Naturally, the user still needs to inspect the model in the Results environment to confirm that the model represents the intended analysis.
Mechanical Event Simulation (MES) and Nonlinear Static Stress
- The sign of the reaction force at surface to surface contact has been reversed. Thus, the contact reaction force is now consistent with other reactions forces. The contact force is the force of the part/surface acting on the opposite body. (The sign of the other reaction forces was changed at version 22.0.)
- The material properties for Injected molded parts can be obtained from an Autodesk Moldflow simulation. The Moldflow anisotropic material properties provide a more accurate stress analysis in Autodesk Algor Simulation compared to using homogeneous, isotropic material properties or anisotropic material properties that do not consider the changing orientation of the filler. See Injection Molded Parts - Material Properties From Autodesk Moldflow for details. (Also see “Other:” below.)
- Simplified the input for surface to surface contact:
- Contact types of Surface to Surface (enhanced) and Point to Surface (enhanced) have been removed. The functionality is now in the Surface to Surface and Point to Surface options.
- The option to extend the contact element sides By specified amount has been removed because of limited usefulness.
- The output of the contact reaction forces has been moved to the Analysis Parameters: Output tab where the output of other reaction forces is specified.
- The input for the shell element has been simplified:
- Element Definition: Previously, the user chose the Element Formulation (General, Co-rotational, or Thin) and then selected an available material model (isotropic, orthotropic, etc). Now the user sets the material model, and the software sets a default element formulation. (The user can change the formulation if desired; it is now on the Advanced tab.)
- Element Definition: The material models available for each shell element formulation has been expanded for the General and Thin shell elements. Now the user has the option to choose an element formulation for many of the material models. (Previously, there was often just one element formulation for each material model.)
- Pressure: Pressure applied to the different element formulations was stored in different formats. Thus, switching the element formulation may have required the pressure to be re-applied. This is no longer necessary as the same dialog is used for all shell element types.
- Corrected a problem with thin shell elements (Element Definition: Element Formulation) when using small displacement analysis type (Element Definition: Analysis Type). Gravity and centrifugal loads did not follow the load curve properly. The multiplier from time 0 was used for these loads through the entire analysis. This problem has been fixed.
- Corrected a problem with pressure loads applied to kinematic element. The option for Follows moving surface was not working. The pressures were always working in the same direction in space as the original direction. This problem has been fixed.
- Corrected a problem with the general shell element (known as the original shell element prior to V2010). The centrifugal load calculation was incorrect when the Analysis Type was set to Small Displacement. (Other loads were handled properly.)
Multiphysics
- 2D planar elements can now be used in Transient Coupled Fluid Flow and Thermal. For models in which a 2D approximation is appropriate, this will provide an easier modeling approach with a faster, more stable analysis. Previously, only 3D elements could be used.
- A new method of transferring results from one analysis to another analysis has been implemented: for example, using the temperature results from a thermal analysis as a load in a stress analysis. Instead of relying on the node numbering to be identical in the two models, the new methods uses interpolation. Therefore, different mesh densities can be used in both models. For details, see the page Setting Up and Performing the Analysis: Multiphysics.
(a) Temperature result from a thermal analysis.
(b) Loaded into a stress analysis with a coarser mesh
(c) Loaded into a stress analysis with a finer mesh
Other
- Algor now contains the navigation tools found in Autodesk Inventor, including the View Cube, Steering Wheel and Nav Bar. These tools allow customers to manipulate their model more efficiently. See Navigation commands for more information.
- A new plastics library with 8000 materials is provided. The plastic materials can be used in any analysis that uses a standard material, such as linear stress (isotropic material model), nonlinear stress (isotropic and von Mises material models), and thermal (isotropic material model). (Also see Linear Stress and Mechanical Event Simulation (MES) and Nonlinear Static Stress above.)
- The definition of the Front and Top view can be changed to correspond to other applications. Pre-defined view points for various CAD applications can be chosen under the Tools: Options: View Options tab. See the View Options Tab for details.
Results Environment
- Since the new View Cube is located in the top right corner of the display area, the default position of the results legend was moved to the top left corner. However, existing models and saved presentations will show the legend in the same position as when the model was saved. If the legend overlaps the view cube, use the Display Options: Plot Settings: Legend Properties tab to move the legend or right-click on the view cube and choose Properties to move the view cube.
- A problem with the cross-sectional dimensions of beam elements was introduced in version 2010. If the beam cross section was entered using a display unit with length units that were different than the model length units, the dimensions were stored improperly in some circumstances. This affected the beam checking calculations only; the displacement and stress calculations were not affected because the cross-sectional values (area, inertia, etc.) were correctly converted. This problem has been fixed.