MotionView

2022

Home
Vehicle Modeling
Explore the various vehicle modeling tools.
Vehicle Libraries
Car/Small Truck Library
MDL Library User's Guide
Vehicle Modeling Library User's Guide
The vehicle library models most four-wheeled vehicles in production today. Models can be modified interactively in MotionView to support topologies that are not supported in the vehicle library. The vehicle library is open-source, ASCII-based, and can be modified by you. The methods in the vehicle library can also be used and adapted to model non-automotive land vehicles, such as tractors and trucks.
Front Suspension Systems

What's New
Get Started
Tutorials
MotionView Overview
MotionView Menus
Project Browser
MotionView Panels
MotionView CAD Interfacing
Flexible Bodies
MotionView Solver Interfacing
Vehicle Modeling
Optimization
Functional Mockup Unit (FMU)
MotionView Interface with Collaboration Tools
Tcl/Tk Reference Guide
MDL Reference Guide
MotionSolve Reference Guide
Templex and Math Reference Guide
MotionView Python Reference Guide
HyperWorks MotionView Help

Index

2022

MotionView

What's New
View new features for MotionView 2022.
Get Started
Learn the basics and discover the workspace.
Tutorials
Discover MotionView functionality with interactive tutorials.
MotionView Overview
MotionView is a general pre-processor for Multi-body Dynamics.
MotionView Menus
Explore the MotionView menus which provide access to the various wizards, dialogs, tools, and panels.
Project Browser
The Project Browser allows you to view the MotionView model structure while providing display and editing control of entities.
MotionView Panels
Explore the various panels and tools in 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.
MotionView Solver Interfacing
Solvers and translators supported in MotionView.
Vehicle Modeling
Explore the various vehicle modeling tools.
- Build and Analyze Models
- Vehicle Libraries
  - Car/Small Truck Library
    - MDL Library User's Guide
      - Vehicle Modeling Library User's Guide
        The vehicle library models most four-wheeled vehicles in production today. Models can be modified interactively in MotionView to support topologies that are not supported in the vehicle library. The vehicle library is open-source, ASCII-based, and can be modified by you. The methods in the vehicle library can also be used and adapted to model non-automotive land vehicles, such as tractors and trucks.
        
        The Suspension Design Process
        A widely used process in the automotive industry is to split the suspension design and development into three distinct stages. The stages are typically performed by different teams working in different locations and at different times during the vehicle program. Ideally, the teams will share model data, modeling methods, and results widely. Since the teams are working on the same vehicle, the engineering lessons learned by one group will need to be shared with the other two teams.
        
        Design of Experiments and Optimization
        All of the MotionView models can be used in either a Design of Experiments (DOE) or Optimization study using the HyperStudy client in HyperWorks.
        
        Front Suspension Systems
        
        Front MacPherson Strut (1pc LCA)
        In a front MacPherson strut (1pc LCA) suspension the knuckle and wheel are located by a control arm and strut. The coil spring is part of the strut and acts between the strut tube and the vehicle body. The spring’s axis typically is not parallel to the strut, but is offset to minimize the bending moment in the strut.
        
        Front MacPherson Strut (2pc LCA)
        In a front MacPherson strut (2pc LCA) suspension, the knuckle and wheel are located by a control arm and strut. The coil spring is part of the strut and acts between the strut tube and the vehicle body. The spring’s axis typically is not parallel to the strut, but is offset to minimize the bending moment in the strut.
        
        Front Multi-link
        The multi-link suspension derives its name from the fact that it is made up of three or more links. The MotionView multi-link suspension contains four links, and it is generally used on cars and off-road vehicles. This suspension offers flexibility to the designer, since each link’s location can be determined independently.
        
        Front SLA (1pc LCA)
        The Short-Long Arm (SLA) suspension is also known as a Double Wishbone suspension. The SLA name is derived from the length of the control arms. The lower arm is typically long to provide a good spring lever ratio. The upper arm is typically short to provide the proper camber curve. This suspension is widely used on cars, light trucks, and on independent suspension heavy trucks.
        
        Front SLA (2pc LCA)
        A Short-Long Arm (SLA) suspension configuration is also known as a Double Wishbone suspension. The SLA name is derived from the length of the control arms. The lower arm is typically long to provide a good spring lever ratio. The upper arm is typically short to provide the proper camber curve. This suspension is widely used on cars, light trucks, and on independent suspension heavy trucks. The two-piece lower control arm is the only difference between the two front SLA suspensions.
        
        Rear Suspension Systems
        The rear suspension model is built using the same process as the front suspension. Eleven different rear suspensions are available using the Assembly Wizard.
        
        Suspension Components
        
        Events
        Events create motions and forces in the model which make the system move. Most events add additional parts to the model to perform the simulation.
        
        Static Ride Analysis
        The Static Ride analysis is a simulation of both wheels moving up and down, in phase, with the steering wheel held fixed. The chassis is fixed-to-ground. The displacement of the wheel center is prescribed by the user. The suspension moves via a simple control system and a “suspension test rig”. The wheel is constrained at the tire patch location to the suspension test rig using an in-plane joint. Standard suspension requests (caster, camber, toe, etc.) are included as part of the ride analysis and are described here. The front and rear suspension ride analyses are similar.
      - Task Wizard Dialog
        The Task Wizard dialog allows you to select the analysis tasks to be run.
      - Assembly Wizard Dialog
        In MotionView, models are assembled from libraries of pre-defined systems using the Assembly Wizard, located on the Model menu. The Assembly Wizard dialog guides you through the assembly process, ensuring that your selections are compatible.
      - Attachment Wizard Dialog
        The attachments specified during the assembly process (using the Assembly Wizard dialog) can be modified using the Attachment Wizard, located on the Model menu. The Attachment Wizard dialog guides you through the process of modifying the model attachments.
      - Set Wizard Paths Dialog
        The Set Wizard Path dialog allows you to select directories in which several files are stored.
    - MDL Library Reference Guide
  - Heavy Truck MDL Library
  - Two-Wheeler MDL Library
- Components Library
- Leaf Spring Modeling
- Road Modeling
- Tire Modeling
- Full Vehicle Events and Altair Driver
- Road Tools
- 1D Vehicle System Models
- Update Model Utility
- Aerodynamic Forces
Optimization
Discover optimization with MotionView, MotionSolve, and HyperStudy.
Functional Mockup Unit (FMU)
Use the FMU tool to add a Functional Mock-up Unit and connect it to a multi-body model.
MotionView Interface with Collaboration Tools
MotionView supports a limited version of interface with HyperWorks Collaboration Tools.
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.
HyperWorks MotionView Help
MotionView help for HyperWorks.

View All Altair Simulation Help

MotionView

2022

Home
Vehicle Modeling
Explore the various vehicle modeling tools.
Vehicle Libraries
Car/Small Truck Library
MDL Library User's Guide
Vehicle Modeling Library User's Guide
The vehicle library models most four-wheeled vehicles in production today. Models can be modified interactively in MotionView to support topologies that are not supported in the vehicle library. The vehicle library is open-source, ASCII-based, and can be modified by you. The methods in the vehicle library can also be used and adapted to model non-automotive land vehicles, such as tractors and trucks.
Front Suspension Systems

What's New
Get Started
Tutorials
MotionView Overview
MotionView Menus
Project Browser
MotionView Panels
MotionView CAD Interfacing
Flexible Bodies
MotionView Solver Interfacing
Vehicle Modeling
Optimization
Functional Mockup Unit (FMU)
MotionView Interface with Collaboration Tools
Tcl/Tk Reference Guide
MDL Reference Guide
MotionSolve Reference Guide
Templex and Math Reference Guide
MotionView Python Reference Guide
HyperWorks MotionView Help

Index

Front Suspension Systems

Front MacPherson Strut (1pc LCA)
In a front MacPherson strut (1pc LCA) suspension the knuckle and wheel are located by a control arm and strut. The coil spring is part of the strut and acts between the strut tube and the vehicle body. The spring’s axis typically is not parallel to the strut, but is offset to minimize the bending moment in the strut.
Front MacPherson Strut (2pc LCA)
In a front MacPherson strut (2pc LCA) suspension, the knuckle and wheel are located by a control arm and strut. The coil spring is part of the strut and acts between the strut tube and the vehicle body. The spring’s axis typically is not parallel to the strut, but is offset to minimize the bending moment in the strut.
Front Multi-link
The multi-link suspension derives its name from the fact that it is made up of three or more links. The MotionView multi-link suspension contains four links, and it is generally used on cars and off-road vehicles. This suspension offers flexibility to the designer, since each link’s location can be determined independently.
Front SLA (1pc LCA)
The Short-Long Arm (SLA) suspension is also known as a Double Wishbone suspension. The SLA name is derived from the length of the control arms. The lower arm is typically long to provide a good spring lever ratio. The upper arm is typically short to provide the proper camber curve. This suspension is widely used on cars, light trucks, and on independent suspension heavy trucks.
Front SLA (2pc LCA)
A Short-Long Arm (SLA) suspension configuration is also known as a Double Wishbone suspension. The SLA name is derived from the length of the control arms. The lower arm is typically long to provide a good spring lever ratio. The upper arm is typically short to provide the proper camber curve. This suspension is widely used on cars, light trucks, and on independent suspension heavy trucks. The two-piece lower control arm is the only difference between the two front SLA suspensions.

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