Research on effect of stiffness and damping characteristics of smart spring support on vibration characteristics of multi-span shaft system
Year: 2025
Type: article
Abstract: Smart spring support is a kind of active vibration-damping device based on piezoelectric ceramics, which has a good suppression effect on the vibration of multi-span shaft system such as helicopter tail horizontal shafts. In order to realize vibration suppression of multi-span shaft system in different working conditions, it is crucial to grasp the influence of smart spring support stiffness and damping characteristics on the vibration characteristics of multi-span shaft system. In this paper, a simulation modeling method of multi-span shaft system with smart spring support is proposed and experimentally verified. Based on this method, the simulation models of smart spring support in three working states of separation state, slip state and complete combination state are established, the stiffness and damping characteristics of smart spring support in different working states are analyzed, and their influences on vibration characteristics of multi-span shaft system in steady state and trans-critical state are also analyzed. The results show that smart spring support in slip state has a better vibration damping effect on shaft system than in separation state and complete combination state, optimal output force of smart spring support required for vibration control of multi-span shaft system in steady state and trans-critical state are 300N and 600N, vibration reduction rate reaches 50% and 55%.
Authors: Miaomiao Li, Fanxuan Li, Xinyu Sun, Ran Zhou, Rupeng Zhu
Institution: Nanjing University of Aeronautics and Astronautics
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7117883071