2021

Home
Multibody Modeling
MotionView is a general pre-processor for Multibody Dynamics.
Vehicle Modeling
Explore the various vehicle modeling tools.
Components Library
Bushings
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.
Define the Bushing's Properties
The Properties window includes five tabs that you can use to define the properties of your bushing.

What's New
Get Started
Video Tutorials
Manage Files and Data
Sessions and Report Templates
Interface with External Products
Entities and Solver Interfaces
Model Build and Assembly
Geometry
Meshing
Elements
Morph
Connectors
Composites
Crash and Safety
Design Space
Design Explorer
Aerospace
Aeroelasticity
Marine
Squeak and Rattle Director
Panels
Results Data
Plot Data
Multibody Modeling
Media Files
Text Files
Tabulate Results
Publishing and Reporting

2021

What's New
View new features for HyperWorks 2021.
Get Started
Learn the basics and discover the workspace.
Video Tutorials
Discover HyperWorks functionality with interactive tutorials.
Manage Files and Data
Learn how to create, open, import and save models.
Sessions and Report Templates
Set up your sessions in HyperWorks and create report templates.
Interface with External Products
Solver interfaces supported in HyperWorks.
Entities and Solver Interfaces
A solver interface is made up of a template and a FE-input reader.
Model Build and Assembly
Create, organize, and manage the CAE parts.
Geometry
Create, edit, and cleanup geometry.
Meshing
Learn about the different types of mesh you can create in HyperWorks.
Elements
Create and edit 0D/1D entities and edit 2D elements.
Morph
Rapidly change the shape of the FE mesh without severely sacrificing the mesh quality and create, edit, and apply shapes for subsequent design optimization studies.
Connectors
Create connections between parts of your model.
Composites
HyperMesh composites modelings.
Crash and Safety
Tools used for crash and safety analysis.
Design Space
The Design Space environment is dedicated to topology optimization model build and setup. It facilitates rapid model creation by generating the voxel design space for a number of different use cases.
Design Explorer
Multi-disciplinary design exploration and optimization tools.
Aerospace
Many essential utility tools using HyperWorks-Tcl have been developed over the years to support Aerospace customers. A few tools have been collected and upgraded to be compatible with this release.
Aeroelasticity
Import an aeroelastic finite element model with Nastran Bulk Data format.
Marine
Use the marine tool set to streamline the creation of properties and 1D stiffener mesh using the info read from Marine CAD tools.
Squeak and Rattle Director
Use Squeak and Rattle Director tool set to create evaluation lines, evaluate them and optimize the interfaces to eliminate squeak and rattle issues.
Panels
Panels contains pre-processing and post-processing tools.
Results Data
HyperView is a complete environment to visualize, query, and process results data.
Plot Data
HyperGraph is a data analysis and plotting tool with interfaces to many CAE file formats.
Multibody Modeling
MotionView is a general pre-processor for Multibody Dynamics.
- MotionView Overview
  MotionView is a general pre-processor for Multi-body Dynamics.
- Model Browser
  The Model Browser allows you to view the MotionView model structure while providing display and editing control of entities.
- MotionView Ribbons
  The MotionView ribbons allows you to quickly access tools and standard functions, and is located along the top of MotionView.
- MotionView CAD Interfacing
  MotionView supports the importing of several types of CAD and FE formats.
- Flexible Bodies
  MotionView has many pre-processing and post-processing capabilities with regards to flexible bodies, or flexbodies, for multi-body dynamics models.
- Preferences Menu
  From the Preferences menu, you can access the Options dialog.
- Vehicle Modeling
  Explore the various vehicle modeling tools.
  - Build and Analyze Models
  - Vehicle Libraries
  - Components Library
    - Accessing Auto Entities in MotionView
    - Symmetry Options
    - Bump and Rebound Stops
    - AutoRider
      The AutoRider models the mass and inertia of a human body and includes graphics for the human body.
    - Bushings
      - AutoBush
        The AutoBush is a bushing model that is designed to easily simulate bushings used in ground vehicles. The AutoBush entity reads bushing stiffness (force-displacement) and damping (force-velocity) data from a file written in the TeimOrbit format.
      - AutoBush FD
      - 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.
        
        General Bushing System Files
        The Model Identification Tool (MotionView) is a utility in HyperGraph that you use to fit experimental data to various bushing models. The MotionView generates a General Bushing System file, .gbs file, which defines the bushing properties.
        
        Add an Altair Bushing Model
        You can add an Altair Bushing Model, also known as AutoBushFD, a frequency-dependent bushing, to your MotionView model using the Add Auto Entity tool in MotionView.
        
        Attach a Bushing to the Model
        This section describes how you attach a bushing to a model.
        
        Define the Bushing's Properties
        The Properties window includes five tabs that you can use to define the properties of your bushing.
        
        Define the Property File
        
        Define Preload, Offset and Scale
        
        Define the Friction
        The friction torque resists rotation of the bodies relative to one another. The friction model supports stiction and sliding effects as well as a measured friction torque due to preload in the bushing.
        
        Define the Mount Stiffness
        Use Mount Stiffness when you want to approximate the structural deflection of the bodies that the bushing connects due to the load that the bushing carries. Mount stiffness is modeled as a set of linear springs and dampers in series with the bushing stiffness and damping, thus softening the connection between the bodies. Alternatively, you can use flexible bodies to model the bodies the bushing connects.
        
        Define the Mount Limits
        You can activate Mount Limits to simulate material contact between the bodies that the bushing connects. This contact limits the bushing deflection. When the deflection is sufficient in a given direction to close the gap distance, the mount limit forces or torques become active. The forces and torque are computed using an impact function. An exponent greater than one (1) provides increasing stiffness with penetration. The damping force is smoothed with a cubic step function over the penetration distance.
        
        Add a Pair of Bushings
        In addition to adding a single bushing to your project, you can also add a pair of bushings such as AutoBushFD pair. When you add a pair, MotionView automatically reflects modifications you make on the left bushing of the pair to the right bushing, unless you choose otherwise. MotionView assumes bilateral symmetry about the global X-Z plane.
    - AutoDamper
      The AutoDamper entity is a force-velocity model designed to easily simulate a shock absorber used in ground vehicles. The AutoDamper entity reads force-velocity data from a file written in the TeimOrbit format.
    - Springs
    - Tires
    - Plotting Auto Entities in HyperGraph
    - TeimOrbit File Format
    - Test Rig
  - Leaf Spring Modeling
  - Road Modeling
  - Tire Modeling
  - Full Vehicle Events and Altair Driver
  - Road Tools
  - 1D Vehicle System Models
  - Update Model Utility
- Tcl/Tk Reference Guide
  Reference material for the HyperWorks Desktop scripting interface which is a set of Tcl/Tk commands.
- MDL Reference Guide
  Reference materials for the MotionView MDL Language, Tire Modeling, and the MDL Library.
- MotionSolve Reference Guide
  Reference material detailing command statements, model statements, functions and the Subroutine Interface available in MotionSolve.
- Templex and Math Reference Guide
  Reference material for Templex (a general purpose text and numeric processor) and additional mathematical functions and operators.
- MotionView Python Reference Guide
  Reference materials for the MotionView Python Language.
Media Files
MediaView plays video files, displays static images, tracks objects, and measures distances.
Text Files
TextView math scripts reference vector data from HyperGraph windows to automate data processing and data summary.
Tabulate Results
TableView creates an Excel-like spreadsheet in HyperWorks.
Publishing and Reporting
Create and export Document and Presentation reports with one click and also define your own report structure.

View All Altair HyperWorks Help

2021

Home
Multibody Modeling
MotionView is a general pre-processor for Multibody Dynamics.
Vehicle Modeling
Explore the various vehicle modeling tools.
Components Library
Bushings
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.
Define the Bushing's Properties
The Properties window includes five tabs that you can use to define the properties of your bushing.

What's New
Get Started
Video Tutorials
Manage Files and Data
Sessions and Report Templates
Interface with External Products
Entities and Solver Interfaces
Model Build and Assembly
Geometry
Meshing
Elements
Morph
Connectors
Composites
Crash and Safety
Design Space
Design Explorer
Aerospace
Aeroelasticity
Marine
Squeak and Rattle Director
Panels
Results Data
Plot Data
Multibody Modeling
Media Files
Text Files
Tabulate Results
Publishing and Reporting

Define the Bushing's Properties

The Properties window includes five tabs that you can use to define the properties of your bushing.

Define the Property File
Define Preload, Offset and Scale
Define the Friction
The friction torque resists rotation of the bodies relative to one another. The friction model supports stiction and sliding effects as well as a measured friction torque due to preload in the bushing.
Define the Mount Stiffness
Use Mount Stiffness when you want to approximate the structural deflection of the bodies that the bushing connects due to the load that the bushing carries. Mount stiffness is modeled as a set of linear springs and dampers in series with the bushing stiffness and damping, thus softening the connection between the bodies. Alternatively, you can use flexible bodies to model the bodies the bushing connects.
Define the Mount Limits
You can activate Mount Limits to simulate material contact between the bodies that the bushing connects. This contact limits the bushing deflection. When the deflection is sufficient in a given direction to close the gap distance, the mount limit forces or torques become active. The forces and torque are computed using an impact function. An exponent greater than one (1) provides increasing stiffness with penetration. The damping force is smoothed with a cubic step function over the penetration distance.

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