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(abstract) Characterization of Structural Response for Systems with Loose Joints

Show simple item record Bruno, Robin J. en_US 2004-10-05T05:03:54Z 2004-10-05T05:03:54Z 1995-04-02 en_US
dc.identifier.citation Boston, MA en_US
dc.identifier.clearanceno 94-1320 en_US
dc.description.abstract This paper describes a technique to locate and characterize loose joints in a large truss structure to generate an accurate structural model. The joint looseness is modeled as a gap in the member that opens and closes depending on the loading. Arbitrarily placed actuators are used to prestress the structure to first linearize the response. Next the actuator displacements are systematically reduced while monitoring the displacement response. The gap locations are determined by comparing the measured displacements with sets of calculated displacements and the sizes are estimated by monitoring the gap member length changes using the appropriate linear force-displacement relationship for the load level. The effect of measurement error in the truss displacements and the actuator length changes are investigated. en_US
dc.format.extent 71855 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.subject.other truss structures loose joints displacements actuators inspection joint gaps adaptive structures space structures en_US
dc.title (abstract) Characterization of Structural Response for Systems with Loose Joints en_US

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