A biomimetic quasi zero stiffness isolation device composed of a buckling beam and viscoelastic mate-rial in parallel is proposed.It is effective in the higher precision and dynamic characteristics requirements of opti-cal precision instruments,and it can solve the contradiction between narrow installation space and wide fre-quency domain isolation.A non-linear dynamic model is established for the biomimetic quasi zero stiffness isola-tion 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 effec-tively reduce the vibration response this conclusion providing a reference for the design of complex isolation sys-tems in optical precision instruments.
关键词
足弓/仿生/隔振/准零刚度
Key words
arches of human foot/biomimetic/vibration isolation/quasi zero stiffness
维普
万方数据