Measurement software extends modal testing
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Sound and Vibration Technology product story
Edited by the Engineeringtalk editorial team
Feb 3, 2006
Sound and Vibration Technology has released a new version of RBICalc for measuring moments of inertia and centre of gravity position.
Sound and Vibration Technology (SVT) has released a new version of RBICalc for measuring moments of inertia and centre of gravity position.
This latest version takes advantage of being a native-Windows application.
Also new is the ability to animate the rigid body behaviour of the structure under test, for improved investigation of the measured data.
This software is available for purchase, or alternatively SVT can provide an on-site service using its highly mobile engineers.
RBICalc is an extension of modal testing where portable shakers are used to excite the low frequency rigid body modes of a structure on temporary suspension.
Advantages of this approach, compared with a trifilar method, are as follows: moments of inertia and centre of gravity; little extra effort if the structure is already undergoing a modal test; the structure is tested in its normal attitude; the equipment is portable, so the testing can be performed anywhere; and the process produces more results than are required to satisfy the equations, so the matrices are overdetermined, resulting in the automatic calculation of confidence factors.
RBICalc has been used by SVT and its customers to test such systems as car bodies, car engines, head-up displays and military vehicles.
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