TY - JOUR
T1 - Two-port modeling and simulation of an electrodynamic shaker for virtual shaker testing applications
AU - Martino, Jonathan
AU - Harri, Kristof
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/11/10
Y1 - 2019/11/10
N2 - This article discusses the modeling and simulation of the coupling problem in virtual shaker testing applications. An innovative model of the electrodynamic exciter is developed based on a transmission line approach and a two-port network over Z-modeling is presented. The exciter is modeled by a two degrees of freedom mechanical structure coupled to an electrodynamic transducer. While classical lumped modeling depends on the structure under test, this enhanced model is totally independent and only relies on the physical parameters of the shaker which can be identified by non-linear curve fitting. The presented model is also shown to be partially decoupled, allowing an improved identification of the system. The validity and limitations are verified by comparison with experimental results and the developed model efficiently predicts the output reaction of the shaker as well as the prevailing coupling in the interface.
AB - This article discusses the modeling and simulation of the coupling problem in virtual shaker testing applications. An innovative model of the electrodynamic exciter is developed based on a transmission line approach and a two-port network over Z-modeling is presented. The exciter is modeled by a two degrees of freedom mechanical structure coupled to an electrodynamic transducer. While classical lumped modeling depends on the structure under test, this enhanced model is totally independent and only relies on the physical parameters of the shaker which can be identified by non-linear curve fitting. The presented model is also shown to be partially decoupled, allowing an improved identification of the system. The validity and limitations are verified by comparison with experimental results and the developed model efficiently predicts the output reaction of the shaker as well as the prevailing coupling in the interface.
KW - Mechanical lumped element
KW - Shaker modeling
KW - Two-port
KW - Vibration simulation
KW - Virtual shaker testing
UR - http://www.scopus.com/inward/record.url?scp=85070997696&partnerID=8YFLogxK
U2 - 10.1016/j.jsv.2019.07.001
DO - 10.1016/j.jsv.2019.07.001
M3 - Article
AN - SCOPUS:85070997696
SN - 0022-460X
VL - 460
JO - Journal of Sound and Vibration
JF - Journal of Sound and Vibration
M1 - 114835
ER -