This paper discusses analytical and experimental procedures to evaluate the frangibility of an airport antenna structural system. For the purposes of this evaluation, a frangible structure is one that collapses when impacted by an aircraft without causing damage to the aircraft. Static and dynamic experiments were conducted to measure the structural response parameters that reflect the degree of frangibility of impacted antenna system. Limiting frangibility design guidelines were evaluated using the test results such as the failure mode, the striking force, and the time to failure after impact. An analytical evaluation of frangibility requirements was conducted using a finite element model of the aluminum antenna structure. The analytical model successfully demonstrated its effectiveness in predicating the failure parameters required to determine whether the tested structure met the frangibility design guidance.
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