摘要
一般的线性被动隔振系统因具有频率保持性而不能彻底隔离线谱激励,而对于非线性隔振系统则可能改变系统的频谱结构,特别是处于混沌状态时它的频谱是连续的宽频谱,从而可以从根本上解决线谱激励的隔振问题.为此从理论和实验两个方面对利用非线性隔振系统处于混沌状态下的宽频特征以消除或减弱特征线谱进行了研究.结果表明混沌隔振不仅对线谱有较好的隔离效果,而且整体隔振性能也比较好.
General linear passive vibration\|isolation system can′t insulate the line spectra excitation completely for its frequency holding characteristics. While for nonlinear vibration\|isolation system, it no longer has the frequency holding characteristics, so it may change the system′s frequency spectrum structure. Especially, when in chaotic vibration state, the system has a continuous broadband frequency spectrum, so can solve the issue of the line spectrum excitations′ insulation in essential. According to the nonlinear vibration\|isolation system′s broadband frequency spectrum characteristics, the research on removing or weakening the characteristic line spectra is carried through theoretically and experimentally. The results indicate that chaos vibration\|isolation′s insulation performance is preferable not only for line spectra isolation in local but also in whole.
出处
《海军工程大学学报》
CAS
2003年第1期19-22,共4页
Journal of Naval University of Engineering
