Extracting Fixed Base Modal Models from Vibration Tests on Flexible Tables
نویسندگان
چکیده
a acceleration dof degree of freedom H Frequency response function f Applied force FE Finite Element FRF Frequency Response Function Φc The mode shape matrix of the bare table at dof to be constrained Subscripts c degree of freedom at locations to be constrained f dof at free locations t dof at tip of the slip table s dof at the classic shaker input location on the slip table i any other dof not including t or s
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Experimental Modal Substructuring to Extract Fixed-Base Modes from a Substructure Attached to a Flexible Fixture
It is well known that fixed boundary conditions are often difficult if not impossible to simulate experimentally, but they are important to consider in many applications. Mayes and Bridgers ["Extracting Fixed Base Modal Models from Vibration Tests on Flexible Tables," IMAC XXVII, Orlando, Florda, 2009.] recently presented a method whereby one can determine the fixed base modes of a structure fr...
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