Application of Hammering Method Modal Testing in Larger Structure

摘要

Hammering method modal testing has economic, convenient and efficient advantages, etc., which is widely used in the small structure modal analysis. However, the application scope is limited in the larger structure due to small excitation energy, weak response signal and other factors. In the paper, a series of measures to improve the precision are adopted in the larger structure aiming at some missile, thereby accurately obtaining modal parameters at former four orders, and realizing the application of hammering method modal testing in larger structure.