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Dynamic sub-structuring with passive state-space components

A. Liljerehn ; Thomas Abrahamsson (Institutionen för tillämpad mekanik, Dynamik)
26th International Conference on Noise and Vibration Engineering, ISMA 2014, Including the 5th International Conference on Uncertainty in Structural Dynamics, USD 2014; Leuven; Belgium; 15 September 2014 through 17 September 2014 p. 3879-3890. (2014)
[Konferensbidrag, refereegranskat]

Component synthesis regards modeling of complex dynamic structures by decomposing the structure into smaller simpler components, modeling each component or sub-structure individually and then assemble the components to construct the complete dynamic structure model. The methodology allows for a mixture of experimental and analytical models of sub-structures to be assembled into a coupled system model. There are a number of component synthesis methods that stands at disposal. In this paper we use state-space component synthesis to assemble two state-space sub-components of a test rig. One sub-component model is based on measured frequency response data and the other is based on a Finite Element (FE) modeled component and the coupled structure is validated against reference measurements. The paper also investigates and shows the necessity of physically consistent experimentally derived sub-system models in component synthesis and presents a new methodology for passivity enforcement on state-space models.

Denna post skapades 2014-12-22. Senast ändrad 2015-05-11.
CPL Pubid: 208858


Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Dynamik


Teknisk mekanik

Chalmers infrastruktur