GRAMPA--an automatic technique for exciting the principal modes of vibration of complex structures

dc.contributor.author	F.J. Hawkins	en_US
dc.date.accessioned	2014-10-21T15:50:01Z
dc.date.available	2014-10-21T15:50:01Z
dc.date.issued	1965	en_US
dc.identifier.other	ARC/R&M-3588	en_US
dc.identifier.uri	https://reports.aerade.cranfield.ac.uk/handle/1826.2/2857
dc.description.abstract	This Report describes a new technique for finding automatically, when using multipoint excitation, the force distribution required to produce in-phase responses at the excitation points on a structure. It is shown how this technique is used to find natural frequencies and principal mode shapes. The construction of a five-channel, servo-controlled system, circuit details and operation are explained in detail.	en_US
dc.relation.ispartofseries	Aeronautical Research Council Reports & Memoranda	en_US
dc.title	GRAMPA--an automatic technique for exciting the principal modes of vibration of complex structures	en_US