Altair HyperWorks
Altair HyperWorks

2023.1

  1. Home
  2. Altair HyperWorks Tools

    Administrative tools to customize your Altair HyperWorks installation.

  3. Model Identification Tool

    The Model Identification Tool (MIT) is a profile in HyperGraph for fitting test data from frequency- and amplitude-dependent bushings to analytical models. The MIT operates in conjunction with HyperGraph, MotionView and MotionSolve to provide you with a comprehensive solution for modeling and analysis.

  4. Use the Altair Bushing Model with MotionSolve

    This section provides information about using the Altair Bushing Model, also known as AutoBushFD, with MotionSolve.

  5. Theory and Formulations

  6. Damping Force Models

    The Altair Bushing Model includes the following Damping Force Models:

  7. Rubber Damping Model
  • What's New
  • Altair HyperWorks Introduction
  • Tutorials
  • Altair HyperWorks Tools
Index
Altair HyperWorks
Altair HyperWorks
  • What's New

    View new features for Altair HyperWorks 2023.1.

  • Altair HyperWorks Introduction

    Quick introduction to Altair HyperWorks products.

  • Tutorials

    Discover the functionality of Altair HyperWorks products with interactive tutorials.

  • Altair HyperWorks Tools

    Administrative tools to customize your Altair HyperWorks installation.

    • Altair License Utility

      Use the Altair License Utility to determine a managed Altair Licensing ID, check license usage, borrow licenses, and set up managed Altair Units.

    • Altair Compute Console

      Altair Compute Console (ACC) is a utility that allows you to start different Altair HyperWorks Solvers.

    • Remote Job Submission

      Remote Job Submission in Altair Compute Console (ACC) is implemented as an alternative to a local run.

    • Remote Server User Guide
    • AbaqusODB Upgrade

      AbaqusODB UpGrade is a HyperView tool, which upgrades ODB files created in Abaqus 2018 (or earlier) to Abaqus 2023.

    • 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.

    • HvTrans

      HvTrans is a result translator for HyperView that translates solver result files to .h3d files.

    • HWTK GUI Toolkit

      The HWTK GUI Toolkit is a resource tool for coding Tcl/Tk dialogs. It contains documentation of the HWTK GUI Toolkit commands, demo pages that illustrate our Altair GUI standards, and sample code for creating those examples.

    • Cleanup Utility

      The Cleanup Utility is a script for Windows that removes any custom settings that you may have due to the Altair applications installed.

    • Model Identification Tool

      The Model Identification Tool (MIT) is a profile in HyperGraph for fitting test data from frequency- and amplitude-dependent bushings to analytical models. The MIT 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 MIT interactively and in batch mode.

      • Use MIT

        This section explains how to use the features in HWTK GUI Toolkit.

      • 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:

            • Constant Damping Model

            • Rubber Damping Model
              • Schematic and Equations

              • First Order Filter

              • Scale Factors P0, P1, P2, and Q0, Q1, Q2

              • Multiple Preloads

              • Factor RMIN

              • Select a Lower Bound of R and Rmin

            • Hydromount Damping Model

          • 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.

    • 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 are H3D Info and H3D Validate.

    • Uninstall

      Use the Altair HyperWorks Products Uninstaller to remove all files from the installation directory.

View All Altair HyperWorks Help

Altair HyperWorks
Altair HyperWorks

2023.1

  1. Home
  2. ...
    • Theory and Formulations

    • Use the Altair Bushing Model with MotionSolve

      This section provides information about using the Altair Bushing Model, also known as AutoBushFD, with MotionSolve.

    • Model Identification Tool

      The Model Identification Tool (MIT) is a profile in HyperGraph for fitting test data from frequency- and amplitude-dependent bushings to analytical models. The MIT operates in conjunction with HyperGraph, MotionView and MotionSolve to provide you with a comprehensive solution for modeling and analysis.

    • Altair HyperWorks Tools

      Administrative tools to customize your Altair HyperWorks installation.

    • Damping Force Models

      The Altair Bushing Model includes the following Damping Force Models:

  3. Rubber Damping Model
  • What's New
  • Altair HyperWorks Introduction
  • Tutorials
  • Altair HyperWorks Tools
Index

ON THIS PAGE

    Rubber Damping Model

    • Schematic and Equations
    • First Order Filter
    • Scale Factors P0, P1, P2, and Q0, Q1, Q2
    • Multiple Preloads
    • Factor RMIN
    • Select a Lower Bound of R and Rmin

    ON THIS PAGE

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