HyperWorks 2020.1 Help

2020.1

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HyperWorks Tools
Administrative tools to customize your HyperWorks installation.
Model Identification Tool
The Model Identification Tool, known as HyperWorks, is a profile in HyperGraph for fitting test data from frequency- and amplitude-dependent bushings to analytical models. The HyperWorks operates in conjunction with HyperGraph, MotionView and MotionSolve to provide you with a comprehensive solution for modeling and analysis.
Use the Altair Bushing Model with MotionSolve
This section provides information about using the Altair Bushing Model, also known as AutoBushFD, with MotionSolve.
Theory and Formulations

What's New
Altair HyperWorks Introduction
Tutorials
HyperWorks Tools

2020.1

HyperWorks 2020.1 Help

What's New
View new features for HyperWorks 2020.1.
Altair HyperWorks Introduction
Quick introduction to Altair HyperWorks and its suite of products.
Tutorials
Discover HyperWorks functionality with interactive tutorials.
HyperWorks Tools
Administrative tools to customize your HyperWorks installation.
- Altair License Utility
  The Altair License Utility is a tool allowing you to determine a host ID, check license usage, borrow licenses, and set up hosted HyperWorks Units.
- AbaqusODB Upgrade
  AbaqusODB UpGrade is a HyperView tool, which upgrades ODB files created in Abaqus 6.2 (or earlier) to Abaqus 2020.
- HvTrans
  HvTrans is a result translator for HyperView that translates solver result files to H3D files.
- HyperWorks GUI Toolkit
  The Altair GUI Toolkit is a resource tool for coding Tcl/Tk dialogs. It contains documentation of the HyperWorks commands, demo pages that illustrate our Altair GUI standards, and sample code for creating those examples.
- Model Identification Tool
  The Model Identification Tool, known as HyperWorks, is a profile in HyperGraph for fitting test data from frequency- and amplitude-dependent bushings to analytical models. The HyperWorks operates in conjunction with HyperGraph, MotionView and MotionSolve to provide you with a comprehensive solution for modeling and analysis.
  - MIT and the Fitting Process
  - Start MIT
    This section explains how to start the HyperWorks interactively and in batch mode.
  - Use MIT
    This section explains how to use the features in the HyperWorks .
  - Appendix I: SPD File Format Specification
  - Altair Bushing Model
    The Altair Bushing Model is a library of sophisticated, frequency- and amplitude-dependent bushing models that you can use for accurate vehicle dynamics, durability and NVH simulations. The Altair Bushing Model supports both rubber bushings and hydromounts.
  - Use the Altair Bushing Model with MotionView
    This section provides information about using the Altair Bushing Model, also known as AutoBushFD, with MotionView. The Altair Bushing Model is a sophisticated model that you can use to simulate the behavior of bushings in vehicle dynamics, durability and NVH simulations.
  - Use the Altair Bushing Model with MotionSolve
    This section provides information about using the Altair Bushing Model, also known as AutoBushFD, with MotionSolve.
    - Features of the Altair Bushing Model
    - Select Force Models in the Bushing Property File
    - Theory and Formulations
      - Stiffness Force Models
        The Altair Bushing Model includes Stiffness Force Models for Spline Stiffness, Constant Stiffness and Cubic Stiffness:
      - Damping Force Models
        The Altair Bushing Model includes the following Damping Force Models:
      - Friction Formulation
        This section provides information about the LuGre and Dahl formulations for friction.
      - Mount Stiffness
        The bodies connected by the bushing are flexible and may deflect under the load being transmitted. This phenomenon is modeled with the Mount Stiffness feature. Mount stiffness models the structural stiffness of the bodies, thus mounting the bushing as a linear spring and damper in series with the bushing in each direction.
      - Mount Limits
        The Altair Bushing Model includes a Mount Limits feature, which lets you model the material contact that occurs between the bodies that a bushing connects. The bodies are flexible and may deflect under the load being transmitted. Given enough bushing deflection, the bodies may contact one another for negative and positive deflections in each direction.
      - Preload, Offset, and Scale
        This section describes how preloads, offsets and scales enter into bushing force computations. You use Preloads, Offsets and Scales to alter the operating point of a bushing. You can offset the bushing displacement in any direction, and scale the input displacement and velocity. You can also offset the bushing force in any direction by adding a preload or scale-output force or moment in any direction.
      - Coupling
        Coupling refers to the forces and moments generated in a bushing to oppose the overall deformation of the bushing. These forces and moments are independent of any coordinate system that might be used to measure the deformation or deformation velocity. Coupling is an important factor when the bushing characteristics are non-linear.
      - Validate Test Data in the SPD File
        The System Performance Data file, *.spd, contains the test data used for fitting a bushing. This data should be validated to ensure that it is physically meaningful. One test for physical consistency is that the dynamic stiffness at any amplitude of vibration must always be greater than the static stiffness at the same amplitude.
    - Bushing Property File
    - Mount Limits Property File
    - References
  - Supported Solvers
- Register HVPcontrol
  Register HVPcontrol registers the HVP ActiveX control for HyperView Player.
- HgTrans
  HgTrans translates solver results files from their native file format to Altair Binary Format (ABF). This can be done using the HgTrans GUI or via the HgTrans batch mode.
- HyperWorks Automation Toolkit
  The HyperWorks Automation Toolkit (HWAT) is a collection of functions and widgets that allows an application to quickly assemble HyperWorks automations with minimal effort and maximum portability.
- H3D Validation Tools
  The H3D Validation Tools available in HyperWorks are H3D Info and H3D Validate.
- HyperWorks Verification and Validation Harness
  HyperWorks Verification and Validation Harness (HVVH) is a tool that can be used to verify and validate HyperWorks products. End users can use this tool to quickly evaluate the software quality, performance, reliability, scalability, and robustness, and to gain more confidence in HyperWorks products.
- Uninstall HyperWorks
  Uninstall HyperWorks is a tool to launch the HyperWorks uninstallation program. This program contains two options that allow you to either remove the originally installed files, or remove all the files that resides in the installation directory.

View All Altair HyperWorks Help

HyperWorks 2020.1 Help

2020.1

Home
HyperWorks Tools
Administrative tools to customize your HyperWorks installation.
Model Identification Tool
The Model Identification Tool, known as HyperWorks, is a profile in HyperGraph for fitting test data from frequency- and amplitude-dependent bushings to analytical models. The HyperWorks operates in conjunction with HyperGraph, MotionView and MotionSolve to provide you with a comprehensive solution for modeling and analysis.
Use the Altair Bushing Model with MotionSolve
This section provides information about using the Altair Bushing Model, also known as AutoBushFD, with MotionSolve.
Theory and Formulations

What's New
Altair HyperWorks Introduction
Tutorials
HyperWorks Tools

Theory and Formulations

The following topics include the theory and supporting equations for the Altair Bushing Model:

Stiffness Force Models
The Altair Bushing Model includes Stiffness Force Models for Spline Stiffness, Constant Stiffness and Cubic Stiffness:
Damping Force Models
The Altair Bushing Model includes the following Damping Force Models:
Friction Formulation
This section provides information about the LuGre and Dahl formulations for friction.
Mount Stiffness
The bodies connected by the bushing are flexible and may deflect under the load being transmitted. This phenomenon is modeled with the Mount Stiffness feature. Mount stiffness models the structural stiffness of the bodies, thus mounting the bushing as a linear spring and damper in series with the bushing in each direction.
Mount Limits
The Altair Bushing Model includes a Mount Limits feature, which lets you model the material contact that occurs between the bodies that a bushing connects. The bodies are flexible and may deflect under the load being transmitted. Given enough bushing deflection, the bodies may contact one another for negative and positive deflections in each direction.
Preload, Offset, and Scale
This section describes how preloads, offsets and scales enter into bushing force computations. You use Preloads, Offsets and Scales to alter the operating point of a bushing. You can offset the bushing displacement in any direction, and scale the input displacement and velocity. You can also offset the bushing force in any direction by adding a preload or scale-output force or moment in any direction.
Coupling
Coupling refers to the forces and moments generated in a bushing to oppose the overall deformation of the bushing. These forces and moments are independent of any coordinate system that might be used to measure the deformation or deformation velocity. Coupling is an important factor when the bushing characteristics are non-linear.
Validate Test Data in the SPD File
The System Performance Data file, *.spd, contains the test data used for fitting a bushing. This data should be validated to ensure that it is physically meaningful. One test for physical consistency is that the dynamic stiffness at any amplitude of vibration must always be greater than the static stiffness at the same amplitude.

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