Search results for: MODEL REDUCTION

• SIMPLIFIED DYNAMIC MODEL OF ROTATING BEAM

  Publication

  • R. Hein
  • C. Orlikowski

  - Diagnostyka - Year 2013

  In the paper a hybrid model of rotating beam is presented. It was obtained by using two methods: modal decomposition and spatial discretization. Reduced modal model was built for the system without the load related to inertia forces that occur during beam rotation. This inertia load was next modeled by using the method of simply spatial discretization and combined with reduced modal model. This approach allows to obtain accurate...

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• The modelling method of discrete-continuous systems

  Publication

  • R. Hein

  - Vibrations in Physical Systems - Year 2014

  The paper introduces a method of discrete-continuous systems modelling. In the proposed method a three-dimensional system is divided into finite elements in only two directions, with the third direction remaining continuous. The thus obtained discrete-continuous model is described by a set of partial differential equations. General difference equations of discrete system are obtained using the rigid finite element method. The limit...

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