非设计工况下的高静低动隔振器参数的响应影响规律研究  

Study on Influence Law of System Parameters on the Dynamic Response of High-static-low-dynamic Stiffness Vibration Isolator Working Under Off-design Condition

作　　者：杨志荣[1,2] 柯贤勇 赵含 饶柱石[2] YANG Zhi-rong;KE Xian-yong;ZHAO Han;RAO Zhu-shi(Xiamen Key Laboratory of Marine Corrosion and Smart Protective Materials,Marine Engineering Institute,Jimei University,Xiamen 361021,China;State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]集美大学轮机工程学院厦门市海洋腐蚀与智能防护材料重点实验室,厦门361021 [2]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《船舶力学》2021年第12期1719-1728,共10页Journal of Ship Mechanics

基　　金：福建省重点科技项目(2020H0019);厦门市海洋腐蚀与智能防护材料重点实验室开放基金;集美大学国家基金培育计划项目。

摘　　要：本文提出一种由屈曲圆板作为负刚度和线性弹簧并联组成的高静低动隔振器;采用有限元法计算分析其屈曲模态,并对其进行了非线性屈曲分析,验证了其具有高静低动的刚度特性;如隔振器的承载重量选择得当,静平衡位置就位于额定载荷下的准零刚度平衡点,一旦载荷发生改变,过载或者欠载,则会造成静平衡位置偏离设定的静平衡点;建立了考虑载荷缺陷的高静低动隔振器的非线性动力学模型,进一步采用谐波平衡法分析其响应,讨论了系统参数的响应影响规律。分析结果表明,系统响应从渐软刚度向渐硬刚度以及渐软-渐硬刚度混合的特性改变取决于承载、阻尼以及激励力幅值情况。A high-static-low-dynamic stiffness(HSLDS) vibration isolator using a circular plate asnegative stiffness corrector and paralleling with linear spring is introduced in this paper. The bucklingmodes of the circular plate are analyzed by using FEM while the HSLDS characteristics of the vibra-tion isolator are calculated and verified using ANSYS software. If the load is chosen properly, the equi-librium point will be set at the zero stiffness point, any change of the load will cause the equilibriumpoint to deviate from the initial setting equilibrium point. The nonlinear mathematical model ofHSLDS vibration isolator considering load imperfection is developed and its response characteristicsare analyzed by using the increment harmonic balance(IHB) method, and the influence law of the sys-tem parameters on it is analyzed. The results show that the dynamic response will exhibit softening,hardening, and softening-to-hardening characteristics, depending on the effect of load imperfection,damper and excitation force.

关 键 词：高静低动 隔振器 非设计工况 有限元 

分 类 号：TB381[一般工业技术—材料科学与工程] U664.21[交通运输工程—船舶及航道工程]