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Multibody Modeling in MotionView
MotionView is a general pre-processor for Multibody Dynamics.
Vehicle Modeling
Explore the various vehicle modeling tools.
Full Vehicle Events and Altair Driver
Event Types
This section describes all of the full vehicle events currently supported with Altair Driver. It also describes all of the events and their parameters.

Welcome
What's New
View new features for Altair HyperWorks 2025.1.
Get Started
Learn the basics and discover the workspace.
Tutorials
Learn more about the Altair HyperWorks suite of products with interactive tutorials.
Startup Procedures and Customizations
Start and configure the applications.
Tool Finder
View a list of deprecated panels and their newer, equivalent workflows.
Manage Files and Data
Create, open, import, and save models.
Sessions and Report Templates
Set up sessions and create report templates.
Interface with External Products
Solver interfaces supported in HyperMesh.
Entities and Solver Interfaces
A solver interface is made up of a template and a FE-input reader.
Browsers
Browsers provide a structured view of model data, which you can use to review, modify, create, and manage the contents of a model. In addition to visualization, browsers offer features like search, filtering, and sorting, which enhance your ability to navigate and interact with the model data.
Sketching
Create and edit 2D parametric sketch geometry.
Topology
Create, edit, and cleanup geometry.
FE Geometry
FE geometry is topology on top of mesh, meaning CAD and mesh exist as a single entity. The purpose of FE geometry is to add vertices, edges, surfaces, and solids on FE models which have no CAD geometry.
Meshing and Elements
Explore the different types of mesh you can create in HyperMesh and create and edit 0D, 1D, 2D, and 3D elements.
Model Build and Assembly
Create, organize and manage parts and subsystems.
Composites
HyperMesh composites modeling.
Connectors
Create connections between parts of your model.
Morph
Rapidly change the shape of the FE mesh without severely sacrificing the mesh quality.
Skeleton Modeling
Create a reduced ordered model to facilitate optimization at the concept phase.
Design Space
Workflow to support topology optimization model build and setup.
Optimization
Setup an Optimization in HyperMesh.
Design Explorer
Multi-disciplinary design exploration and optimization tools.
Validate
Validate the model built before running solver analysis.
Analyze
Models require loads and boundary conditions in order to represent the various physics and/or physical equivalents to bench and in-use testing.
Axisymmetry
Reduce a full 3D model with axisymmetric surfaces while accounting for imperfections.
Concept Modeling
Tools and workflows that are dedicated to rapidly creating new parts for specific use cases, or amending existing parts. The current capabilities are focused on stiffening parts.
Crash and Safety
Tools used for crash and safety analysis.
Airbag
Use airbag folder utilities and export a resulting airbag in a Radioss deck.
Aerospace
Essential utility tools developed using HyperMesh-Tcl.
Aeroelasticity
Import an aeroelastic finite element model with Nastran Bulk Data format.
Certification
Framework to plug certification methods to assess margin of safety from the model and result information.
PhysicsAI
Use PhysicsAI to build fast predictive models from CAE data. PhysicsAI can be trained on data with any physics or remeshing and without design variables.
Results Data in HyperMesh and HyperView
Results data can be post-processed using both HyperMesh and HyperView.
Developer
The Developer ribbon contains tools for automation and customization.
Plot Data in HyperMesh and HyperGraph
Plot data can be post-processed using both HyperMesh and HyperGraph.
Multibody Modeling in MotionView
MotionView is a general pre-processor for Multibody Dynamics.
- MotionView Overview
  MotionView is a general pre-processor for Multibody 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 multibody dynamics models.
- Functional Mockup Unit (FMU)
  Add an FMU to the model or export a model as an FMU.
- Vehicle Modeling
  Explore the various vehicle modeling tools.
  - Build and Analyze Models
  - Vehicle Libraries
  - Components Library
  - Leaf Spring Modeling
  - Road Modeling
  - Tire Modeling
  - Soft Soil Modeling
  - Full Vehicle Events and Altair Driver
    - Full Vehicle Models with Altair Driver and Events
      This section describes how to add a full vehicle model with the Altair Driver and include the events. The events are simulation commands that enable the Altair Driver control to perform the vehicle maneuvers. A model with an event exports an Altair Driver File (.adf) and the MotionSolve (.xml) files to be simulated.
    - Event Types
      This section describes all of the full vehicle events currently supported with Altair Driver. It also describes all of the events and their parameters.
      - Braking In a Turn
        A Braking in a turn event simulates a vehicle decelerating in a circular path.
      - Constant Radius
        A Constant radius event simulates a vehicle driving in a circular path, typically with increasing speed. The event predicts the vehicles roll and understeer characteristics with increasing lateral acceleration.
      - Double Lane Change
        A Double lane change event drives the vehicle through a lane change and a return to lane maneuver, attempting to follow the centerline of the defined lane.
      - Driver File
        The Altair Driver File event allows you to run your own Altair Driver File and use this file in the event.
      - J-turn
        The J-turn event (or Fishhook maneuver) simulates the vehicle response to a large steer in one direction, a dwell time to allow the vehicle to react, and a large steer in the opposite direction, with an additional reaction time.
      - Mass/Inertia Setup
        The Mass/Inertia Setup event is used to modify a specified body’s mass properties (mass, CG and optionally inertia tensor) to achieve a desired set of model (global) mass properties.
      - n-Post Shaker
        The n-Post Shaker event simulates a vehicle supported on a test-rig by posts.
      - Power-off in a Straight Line
        A Power-off in a straight line event simulates the dynamics of a vehicle due to a sudden removal of drive torque.
      - Pulse Steering
        A Pulse steering event simulates a vehicle response to a sudden pulse input to the steering wheel while driving in a straight line at a constant speed.
      - Road Course Drive
        The Road Course Drive event can be used to simulate full vehicle models on the required road profile. Different path and velocity profiles can be specified to validate the vehicle behavior on the specified road. The event also provides a means to study vehicle performance in the areas of durability/fatigue and ride comfort.
      - Single Lane Change
        A Single lane change event drives the vehicle through a single lane change, attempting to follow the centerline of the defined lane.
      - Sinusoidal Steering
        A Sinusoidal steering event simulates a vehicle driving at a constant speed while a sin wave input is applied to the steering wheel.
      - Slalom
        A Slalom event drives the vehicle in a straight, followed by a sequence of turns around cones in alternate directions with constant vehicle velocity.
      - Stability Analysis
        The Stability Analysis event can be used to simulate two-wheeler models on various road surfaces to evaluate the weave and wobble modes of the vehicle. A user-defined road property file determines the road input.
      - Step Steer
        A Step steer event simulates vehicle response to a sudden step input to the steering wheel.
      - Straight Line Acceleration
        A Straight line acceleration event simulates a vehicle accelerating at a constant rate in a straight line.
      - Straight Line Braking
        A Straight line Braking event simulates a vehicle slowing in a straight line.
      - Swept Sine
        A Swept Sine event simulates a vehicle driving at a constant speed with a sinusoidal steering input of constant magnitude but increasing frequency applied.
      - Swept Steer
        A Swept steer event simulates a ramped steer input into a vehicle driving at a steady speed.
      - Throttle-off Cornering
        A Throttle-off cornering event simulates the dynamics of a vehicle driving a constant radius turn at steady state and the reaction of the vehicle due to a sudden removal of the drive torque while cornering.
      - Throttle-off Turn-in
        A Throttle-off turn-in event simulates a vehicle driving straight at constant speed, turning on to a constant radius, then after reaching steady state the throttle is closed and the steering is ramped to tighten the turn.
    - General Driver Event Settings
    - Event Specific Reports
      Various plots are reported in different vehicle events. The plots are selected based on metrics that are important for a given event.
    - Jupyter Reports for Full Vehicles and Suspension Analyses
    - Driver Overview
      The Altair Driver is a set of MotionView models and libraries that allows MotionView users to control and script vehicle events.
    - Controllers Library
      Controllers form the core of the driver. The Controller Library has various basic controllers its arsenal to calculate different driver outputs.
    - Additional Altair Driver File Blocks
    - Altair Driver Mathematical Methods
    - Troubleshooting Driver Modeling
    - MotionView Interface
      Driver can be loaded using the Model Wizard of MDLLIB when the Full Vehicle with Driver option is chosen. Driver has some special requirements to interface with the vehicle model. These requirements are resolved automatically if the vehicle model is built using the Full vehicle with advanced driver option in the Model Wizard in MDLLIB.
    - Altair Driver File
      Driver uses the Altair Driver File (ADF) to access all the event parameters in the Solver.
  - Road Tools
  - 1D Vehicle System Models
  - Update Model Tool
  - Aerodynamics
  - Track Builder
  - Useful Functions and Subroutines
- Tcl/Tk Reference Guide
  Reference material for the 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 in MediaView
MediaView plays video files, displays static images, tracks objects, and measures distances.
Tabulate Results in TableView
Use TableView to create an Excel-like spreadsheet.
Text Files in TextView
TextView math scripts reference vector data from HyperGraph windows to automate data processing and data summary.
Publishing and Reporting
Create, define, and export reports.

Event Types

This section describes all of the full vehicle events currently supported with Altair Driver. It also describes all of the events and their parameters.