Abstract:Field modal tests were carried out on four single-layer aluminum alloy reticulated spatial structures to obtain the acceleration response of the structures. The modal parameters of acceleration response were identified and the damping ratio of aluminum alloy reticulated spatial structures was analyzed. The analysis results showed that as the acceleration amplitude increases, the damping characteristics of this type of structure presented three-stage change rule. The research results of this paper can provide references for the damping matrix construction, engineering design and dynamic analysis of similar structures.
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