The multi-body vehicle dynamics model can be configured to represent a variety of vehicles including 4×4, 6×6, and 8×8 wheeled vehicle configurations. The models can be tailored to meet specific vehicle performance curves, accurately reproducing acceleration, braking, and on-grade performance.
The vehicle model takes into account spring and damping rates, bump stops, anti-sway bars, anti-squat anti-dive geometry, and roll axis height.
The unsprung mass is modeled as a separate body connected by a prismatic joint to the base body. In addition a Magic Formula tire model is used to predict the tire forces at each wheel.
The powertrain model contains complete engine, transfer case, differential, and torque converter models. The engine model is based on a torque lookup map. Parameters such as torque converter efficiency, shiftmaps, and gear ratios can be adjusted based on specific vehicle requirements. Lockup transfer cases and differentials can also be incorporated. The brake model includes models of the master cylinder, prop valves, wheel cylinders, pad friction, and rotor and wheel diameters.
A reconfigurable operator’s console allows real-time external monitoring of all vehicle outputs and external control of the simulation using a web based operator’s console. Performance metrics can be collected and vehicle performance can be modified in real time.