摘要
为满足光学精密仪器更高的精度及动态特性要求,解决其安装空间逼仄与宽频域隔振的矛盾,提出了一种由屈曲梁与黏弹性材料并联构成的仿生准零刚度隔振装置,并建立了该仿生隔振装置的非线性动力学模型,结合谐波平衡法对其振动传递特性进行了分析。仿真与实验结果表明:当频率比大于15时,振动幅值传递率小于0.2,系统共振区振动幅值传递率低于0.75,隔振效果良好。该结论验证了仿足弓准零刚度隔振器的有效性,为光学精密仪器复杂隔振系统设计提供了参考。
A biomimetic quasi zero stiffness isolation device composed of a buckling beam and viscoelastic material in parallel is proposed.It is effective in the higher precision and dynamic characteristics requirements of optical precision instruments,and it can solve the contradiction between narrow installation space and wide frequency domain isolation.A non-linear dynamic model is established for the biomimetic quasi zero stiffness isolation device,and its vibration transmission characteristics are analyzed base on harmonic balance method.The simulation accords well with the experimental results.the vibration amplitude transmission rate is less than 0.2 and the vibration amplitude transmission rate in the resonance zone of the system is also less than 0.75,which is corresponding to the frequency ratio is greater than 15.The biomimetic quasi zero stiffness isolation device effectively reduce the vibration response,this conclusion providing a reference for the design of complex isolation systems in optical precision instruments.
作者
邓宏光
陈新度
王晗
张帆
DENG Hongguang;CHEN Xindu;WANG Han;ZHANG Fan(School of Mechanical and Electrical Engineering,Guangdong University of Technology Guangzhou,510006,China;School of Mechanical and Electrical Engineering,Guangzhou University Guangzhou,510006,China)
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2024年第1期129-134,202,共7页
Journal of Vibration,Measurement & Diagnosis
基金
国家自然科学基金资助项目(51705093)
广东省重大科技计划资助项目(X190071UZ190)。
关键词
足弓
仿生
隔振
准零刚度
arches of human foot
biomimetic
vibration isolation
quasi zero stiffness
