非线性被动隔振的若干进展

发布时间：2018-08-01 19:13

【摘要】：工程中航空航天、船舶与海洋结构物及其上装备和精密仪器易受极端环境干扰和破坏,使得非线性隔振理论在近十年来迅猛发展;针对日益严峻的隔振和抗冲击等要求,工程师和科学家们已发展出各种不同的非线性隔振系统,包括主动、半主动、被动和复合隔振.利用非线性改善的被动隔振兼具传统被动隔振的鲁棒性和主动隔振的高效性成为振动控制领域的先进技术.本文主要综述了非线性隔振理论和应用的近十年进展,包括非线性隔振设计、建模、分析、仿真和实验.在隔振系统的构建中,既考虑了刚度非线性又考虑了阻尼非线性;动力学响应的研究中,既有确定性分析又有随机分析.首先提出了适用于非线性隔振系统改进的评价方式;其次综述了高静态低动态刚度隔振及其加强形式非线性阻尼加强和双层非线性隔振,混沌反控制技术、内共振影响、非线性能量阱应用等振动机制利用型隔振和非线性隔振功能材料.最后,对非线性隔振研究发展的热点和关键性问题进行了分析和展望.
[Abstract]:Aerospace, ships and marine structures, their equipment and precision instruments are vulnerable to extreme environmental interference and destruction, which makes the theory of nonlinear vibration isolation develop rapidly in the last ten years, aiming at the increasingly severe requirements of vibration isolation and shock resistance. Engineers and scientists have developed a variety of nonlinear isolation systems, including active, semi-active, passive and composite isolation. It is an advanced technology in vibration control field to utilize nonlinear improved passive vibration isolation with both the robustness of traditional passive vibration isolation and the high efficiency of active vibration isolation. This paper reviews the recent ten years of nonlinear vibration isolation theory and application, including nonlinear vibration isolation design, modeling, analysis, simulation and experiment. In the construction of vibration isolation system, both stiffness and damping nonlinearity are considered, and in the study of dynamic response, there is both deterministic analysis and stochastic analysis. At first, an evaluation method suitable for nonlinear vibration isolation system is proposed, and then the effects of high static and low dynamic stiffness isolation, nonlinear damping strengthening and double nonlinear isolation, chaos anti-control technology and internal resonance are summarized. The nonlinear energy well is applied to equal vibration mechanism using the type of vibration isolation and nonlinear vibration isolation function materials. Finally, the hot spots and key problems of nonlinear vibration isolation are analyzed and prospected.
【作者单位】：上海大学上海市应用数学和力学研究所;上海大学力学系;
【基金】：国家自然科学基金重点项目(11232009),国家自然科学基金项目(11502135,11572182)资助
【分类号】：TB535.1

【相似文献】