Determination of dynamic responses (accelerations, stresses) of linear systems with large number of degrees of freedom costs much work and time. Practically the same results can be obtained by using an appropriate method by which the given dynamic system can be reduced. Retaining the structure of physical model the static reduction is the most commonly used process. Elaboration of lumped mass matrix of bus and commercial vehicle models is heuristic, therefore only the stiffness matrix of given system is problematic. Considering the computational possibilities there are more ways to determine the stiffness matrix of a simplified model. A reduced stiffness matrix, elaborated from the results of dynamic analyses of finite element models, is competitive from the point of view of accuracy and computational costs. After the simplified model of bus structure is obtained the dynamic properties are checked by means of time series and frequency domain analysis and then further improved by active control method.
Optimal control of flexible bus structures
Optimalwertregelung von flexiblen Buskonstruktionen
1995
10 Seiten, 7 Bilder, 8 Quellen
Conference paper
English
Optimal control of flexible bus structures
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