Dynamic Simulation for Vehicle Virtual Prototyping

Virtual prototyping is a key element in emerging simulation-based Integrated Product and Process Development (IPPD) frameworks for vehicles and other human-operated mechanical equipment. Virtual prototyping simulation can allow evaluation of design alternatives in the hands of a human operator at relatively early stages of the product development process. It thus provides a fundamentally new capability to investigate human factor-based design issues. A key requirement of operator-in-the-loop virtual prototyping is the ability to simulate the behavior of the mechanical system in real-time, at a level of fidelity sufficient to insure valid human-machine interaction and to support the associated engineering design and analysis functions. Modern recursive multibody dynamics formulations have been developed that can achieve real-time performance for detailed vehicle models, using advanced parallel processing computing methods. These dynamics formulations, augmented with appropriate models of vehicle subsystems (tires, steering system, powertrain, etc.) can achieve a level of fidelity and real-time performance sufficient to support engineering virtual prototyping applications. As such, they provide the foundation for advanced ground vehicle simulators that can provide a comprehensive operator-in-the-loop virtual prototyping capability to support the IPPD process.

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