Home
Multibody Modeling
MotionView is a general pre-processor for Multibody Dynamics.
Vehicle Modeling
Explore the various vehicle modeling tools.
Vehicle Libraries
Two-Wheeler MDL Library
Front Suspension Systems
Front suspension systems support the wheels in the front with the help of strut rods.
Scooter - Double Side Trailing Link

Welcome
What's New
View new features for Altair HyperWorks 2024.1.
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
Results data can be post-processed using both HyperMesh and HyperView.
Developer
The Developer ribbon contains tools for automation and customization.
Plot Data
HyperGraph is a data analysis and plotting tool with interfaces to many file formats.
Multibody Modeling
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
    - Car/Small Truck Library
    - Heavy Truck MDL Library
    - Two-Wheeler MDL Library
      - Build a Two-Wheeler Model
        The vehicle library is installed as a part of the normal MotionView installation.
      - Front Suspension Systems
        Front suspension systems support the wheels in the front with the help of strut rods.
        Motorcycle Telescopic - Rigid and Deformable Strut Rod (Classic)
        Motorcycle Telescopic - Rigid and Deformable Strut Rod (Inverted)
        Scooter - Single Side Trailing Link
        Scooter - Double Side Trailing Link
        Scooter - Double Side Leading Link
        Scooter - Front Telescopic Fork (Classic)
      - Rear Suspension Systems
        Rear Suspension systems support the rear wheel with the help of a swingarm and coil springs.
      - Linear Torque Powertrain
        A powertrain based on a linear curve where the torque generated is directly proportional to throttle applied.
      - Jounce and Rebound Systems
        Jounce and Rebound bumpers restrict the upward and downward movement of suspension components.
      - Rider
        Rider plays an important role in two wheeler dynamics. To capture the effects of rider on a vehicle, it is important to have a good human body multibody dynamics model.
      - Driveline
        The driveline transmits the power from the power source to the driving wheel.
  - Components Library
  - Leaf Spring Modeling
  - Road Modeling
  - Tire Modeling
  - Soft Soil Modeling
  - Full Vehicle Events and Altair Driver
  - Road Tools
  - 1D Vehicle System Models
  - Update Model Tool
  - Aerodynamics
  - Track Builder
- 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
MediaView plays video files, displays static images, tracks objects, and measures distances.
Tabulate Results
Use TableView to create an Excel-like spreadsheet.
Text Files
TextView math scripts reference vector data from HyperGraph windows to automate data processing and data summary.
Publishing and Reporting
Create, define, and export reports.

View All Altair HyperWorks Help

Scooter - Double Side Trailing Link

This suspension consists of double trailing arms, pivoted symmetrically at the bottom end of the steering column. The inline spring damper system is mounted on the trailing arm on either side. The wheel is suspended on the rear end of the trailing arm.

Figure 1. Double Side Trailing Link Suspension with Steering

Model Use

The Double Side Trailing Link Suspension system can be used in front half vehicle or full vehicle models of a two wheeler. The default geometry and mass approximate that of a two wheeler scooter, but the model and data can be revised to reflect any size two wheeler.

Note:

The wheel body represents the mass and inertia of the tire and the rim.
The wheel hub body represents the mass and inertia of other rotating bodies such as a brake rotor. The wheel hub and brake rotor have no associated graphics.
The wheel and wheel hub parts use the Wheel center location as the center of gravity.

The image below shows the Model Browser view of the systems on a fully populated front suspension model. The Double Side Trailing Link Suspension system has six “child” systems.

Figure 2. Browser View of Double Side Trailing Link Suspension

Points

Points locate the joints and bushings that connect the suspension bodies to one another. The image below shows the principal points for the Double Side Trailing Link Suspension.

Figure 3. Right Side Principal Points – Double Side Trailing Link Suspension

Note: The image above is from the right side of the vehicle.

Bodies

The Double Side Trailing Link Suspension is comprised of the bodies shown in the image below:

Figure 4. Right Side Bodies – Double Side Trailing Link Suspension

Joints

The table below describes the joints for a Double Side Trailing Link Suspension:


Label	Type	Body 1	Body 2	Point	Notes
Steering Swingarm Attachment Joint	Revolute	Swing Arm	Steering Column	Swingarm steering Att Point
Swingarm Spindle Att Joint	Fixed	Spindle	Swing Arm	Front Wheel CG
Spindle to Wheel	Revolute	Front Wheel	Spindle	Front Wheel CG
Steering REV Joint	Revolute	Handle	Frame	Steering Axis Top
Handle	Fixed	Handle	Steering Column	Steering Axis Top

The following image shows the location of the joints in the suspension:

Figure 5. Joints - Double Side Trailing Link Suspension