Publications Details

Proposed approach for admittance testing of a complex aerospace structure

Arviso, Michael A.; Mayes, R.L.

It is common practice to utilize lower fidelity payloads to represent a complex aerospace payload during delivery system-with-payload, ground testing. Typically, the high fidelity payload hardware is not only costly but hard to acquire. Admittance testing can theoretically be used to experimentally model responses of a payload due to interface forces. In this paper we will consider the question, "Can the response of high fidelity payload hardware be predicted from an environmental test on a delivery system with low fidelity payloads and admittance data on all the substructures?" In theory, by acquiring the admittance models of the high and low fidelity payloads as well as the delivery system, one can adjust the measured interface responses and predict the response as if the high fidelity unit had been present in the ground test instead of the low fidelity payload. In this paper, work in progress is described to demonstrate the payload substitution capability for a specific complex aerospace structure. © The Society for Experimental Mechanics, Inc. 2014.