ANSYS Products 19.2 Linux

Part I: ANSYS Structural Products

Release notes are available for the following ANSYS Structural products:

- Mechanical Application (p. 3)
- Mechanical APDL (p. 19)
- Autodyn (p. 27)
- Aqwa (p. 29)
- ACP (p. 31)
- Material Designer (p. 33)

Chapter 1: Mechanical Application Release Notes

This release of the Mechanical application contains all of the capabilities from previous releases plus many new features and enhancements. Areas where you will find changes and new capabilities include the following:

1.1. Changes in Product Behavior
1.2. General
1.3. Graphics
1.4. Geometry
1.5. Materials
1.6. Model Assembly
1.7. External Model
1.8. Model Transfer
1.9. Contact and Connections
1.10. Mesh
1.11. Fracture
1.12. Composites
1.13. Additive Manufacturing Process Simulation
1.14. Analysis
1.15. Acoustics Analysis
1.16.Topology Optimization
1.17. System Coupling
1.18. Loads/Supports/Conditions
1.19. Solution
1.20. Fatigue
1.21. Rigid Body Solver
1.22. Explicit Dynamics
1.23. Results

1.1. Changes in Product Behavior

Product Changes for Mechanical 19.2

Release 19.2 includes several new features and enhancements that result in product behaviors that differ from previous releases. These behavior changes are presented below.

Writing Constant Loading Values to the Input File. For most of the boundary conditions available in Static Structural, Transient Structural, Steady-State Thermal, Transient Thermal, Electric, and ThermalElectric analyses, the way in which the application writes constant loading values to the input file has changed. In previous releases, the application converted values into a table in the input file. Now, it writes load data directly as a constant. However, the loading conditions described below, still do not employ this new method.
For the following boundary conditions, if defined by Components, but not all the Components use constant values (for example, X and Y are constant but Z uses tabular data), and if the Coordinate System you specify in the Details view of the boundary condition does not share the same orientation as the Global Coordinate System, then the application sends the constant components as tabular data.
. Force or Moment applied to a vertex using a follower element (FOLLW201).
. Rotational Acceleration/Rotational Velocity.
Furthermore, for Acceleration, all Component values must be constant. If this is not the case, then the application sends the constant component as tabular data for both Acceleration and Standard Earth Gravity.
- Evaluating Results Based on Display Time. In previous releases, if a result had a Display Time that was past the analysis end time, that result as well as any other valid results were not evaluated. Now, the application evaluates properly defined results, but not the results with incorrect end times.
- Static Acoustics: The Program Controlled option for the Solver Type property now uses the Direct Solver setting.
- Acoustic Frequency Response: The results Sound Pressure Level and A-Weighted Sound Pressure Level now, by default, use the Real option for the Display Type property. Note: For projects prior to release 19.2, the Display Type setting remains as Amplitude.
- Region of Manufacturing Constraint. Now, by default, the Manufacturing Constraints Extrusion, Cyclic, and Symmetry include exclusions.
- Animating Results. In previous releases, if you were animating a result for a file that contained a result set with no values, the Geometry window displayed gray translucent content within the animation for that specific step. Now, the animated graphical display ignores any result set with no data.
- Damping Controls - Structural Damping Coefficient. In the previous release, for a Harmonic Response (Full) analysis, the Damping Control property Structural Damping Coefficient used the unit of measure radians per second (rad/s). The property is now unitless.
- Mesh Object Display Setting. The default setting for the Display Style property of the Mesh object has changed. The previous default setting was Body Color. This option has been changed to Use Geometry Setting. This option displays the mesh in the Geometry window based on the setting of the Display Style property of the Geometry object.

1.2. General

19.2 Enhancements
The following general enhancements were made at Release 19.2:

- Adding Analysis Systems in Mechanical. The New Analysis drop-down menu on the Standard Toolbar has been updated to include all the available Mechanical analysis types. Using this menu also adds a corresponding analysis system, with the appropriate connections, to the Project Schematic.
- Linking Analysis Systems. Mechanical now enables you to link and unlink analysis systems, such as Thermal-Stress or Pre-Stressed Modal, from within the application without having to return to the
- Project Schematic. This new capability automatically creates or deletes the links between the corresponding systems in the Workbench Project Schematic. This feature supports all linked analyses.
- Delete an Environment.You can now delete environments from within the Mechanical application if your Model includes more than one environment. This action also removes the corresponding system from the Workbench Project Schematic.
- Saving and Archiving Projects. Mechanical now offers the File Menu options Save Project As and Archive Project.
- Preference Migration. Most ANSYS Workbench preferences are now automatically migrated when you install a new version of the application. This includes licensing settings, Options panel settings, solver preferences, and Engineering Data settings.
- License Selection. A new category and property has have been added for the Model cell when selected in the Workbench Project Schematic. The new property, License, enables you to specify the license that will be used by a new instance of the Mechanical application for your model.

1.3. Graphics

19.2 Enhancements
The following graphical enhancements were made at Release 19.2:

- Invert Visibility. Invert Visibility is a new context (right-click) menu option that enables you to display all bodies that have been hidden and inversely hide all of the current visible bodies.
- Export Views. A new Export category is available in the preferences dialog. The Views category provides the property File Directory. This property enables you to specify a default location to where you will export and/or import the graphical views that you have created, exported, or imported.

1.4. Geometry

19.2 Enhancements
The following geometry enhancements were made at Release 19.2:

- Import an STL file using Construction Geometry. The Construction Geometry feature has a new option: STL. The STL option enables you to import and view an STL file in your simulation.

1.5. Materials

19.2 Enhancements
No material enhancements were made at Release 19.2:

1.6. Model Assembly

19.2 Enhancements
No Model Assembly enhancements were made at Release 19.2

1.7. External Model

19.2 Enhancements
The following External Model enhancements were made at Release 19.2:

- Automatic Material Assignment.When you import a finite element data file that specifies the materials, and more than one body has the same material assignment, Mechanical automatically creates a Material Assignment object for the associated bodies to ensure that each body has the same unique material identifier.
- Import Composite Plies.You can now import composite ply data from Mechanical APDL (.cdb) and NASTRAN Bulk Data (.bdf, .dat, .nas) files.
- Workbench Model Cell Properties. The Mesh Conversion Options category has a new property: Create Geometry. Active be default, this property instructs the application to create a geometry for your mesh file when imported into Mechanical. If deselected, application imports the mesh only (elements and nodes). Not creating a geometry dramatically increases your import time as well as significantly reducing the amount of memory used during the process.
- Promoting Connections to Remote Points. The promotion feature is now available for imported Flexible Remote Connectors and/or Rigid Remote Connectors. This feature enables you to automatically create a Remote Point object from Worksheet connections that you can then use to scope other objects.
- Accessing Imported Mesh-Based Databases through ACT. Now, when importing a NASTRAN command database using External Model, this imported data is available through the ACT extensions and console window.
- Imported Boundary Conditions. External Model now enables you to:
. Import thermal convection and heat flux loads for Mechanical APDL (.cdb) and Abaqus Input (.inp) files for Surface Load Boundary Conditions.
. Specify Convection and Heat Flux on imported Surface Load boundary conditions.
. Import gravity boundary conditions in the form of an Acceleration object for external CDB, ABAQUS, and NASTRAN files.

…………………. more