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VPG's Structure module allows the user to define LS-DYNA models which can be used for mechanical system analysis including tire model, suspension model and road surfaces. eta/VPG uses an analysis approach consistent with test environments dynamic non-linear analysis using
Road Surface Models
- Digitized from MGA proving ground roads
- Any 3-D data can be used to generate road surfaces
Tire Models
- 3-D FEA models including the tire air pressure
- Frictional Contact interface with road
- Validated versus test data
Vehicle Dynamics
- Road Load Generation
- Use of simplified models for event-based loads
- Rigid and flexible members
- Component or sub-system studies
Full System & Component Durability / Fatigue Assessment
 Time-domain transient stress and strain prediction- eta/VPG fatigue analysis tool included
- Allows multiple material assignment
- Provides a way to create user defined materials
- Users can output files useful in other fatigue codes
- Simulation of durability critical proving ground events
- Calculate material damage of each event
- Calculate the "occurrence" cycles
- Accumulate damages per cycle to predict fatigue life.
Noise, Vibration & Harshness
- Simulate dynamic rough road events including cobbles, potholes and ditches
- Simulate vehicle limit handling events including rollover and emergency lane changes
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