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  • 1
    ISSN: 1573-272X
    Keywords: real-time-simulation ; multibody dynamics ; solution algorithms ; parallel computing ; sparse matrix technologies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Real-time dynamic simulation of large, realistic and complexmultibody systems is essential in developing modern technologies such asvirtual prototyping, man-in-the-loop simulators and intelligent vehiclecontrol systems. In order to achieve real-time performance, currentcommercial codes require the use of large costly computers, thuslimiting the number of potential users. This paper shows thatreal-time can be achieved on medium-size workstations if, on the onehand, an adequate combination of modeling, dynamic formulation, andnumerical integration scheme is selected and, on the other hand,advantage is taken of sparse matrix technology and parallel computing. Astudy of space-state and descriptor methods involving the dynamics of awhole vehicle model is carried out and in conclusion, two methods areproposed as the best candidates for real-time simulation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Multibody system dynamics 1 (1997), S. 259-280 
    ISSN: 1573-272X
    Keywords: real-time-simulation ; computationalmultibody dynamics ; solution algorithms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Current simulation tools for multibody dynamics arenot problem dependent, they use the same modelingprocess to all cases regardless of theircharacteristics. In addition, real-time simulation ofsmall multibody systems is achievable by existingsimulation tools, however, real-time simulation oflarge and complex systems is not possible withexisting methods. This is a challenge that needs to beaddressed before further advances in mechanicalsimulation with hardware-in-the-loop andman-in-the-loop, as well as virtual prototyping aremade possible. This paper addresses the issue of how the modelingprocess – dependent versus independent co-ordinates, anddescriptor form versus state-space form of theequations of motion – affects the dynamic simulation ofmultibody systems and how it could be taken intoaccount to define the concept of intelligentsimulation. With this new concept all the factorsinvolved in the simulation process – modeling,equations, solution, etc. – are chosen and combineddepending upon the characteristics of the system to besimulated. It is envisioned that this concept willlead to faster and more robust real-time simulators.
    Type of Medium: Electronic Resource
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