[Objective]To address the issue of nonlinear stiffness changes in isolation systems with limiters under impact excitation,an impact dynamics theoretical model and its anti-impact performance research are conducted.[Methods]First,using the idea of segmented linear equivalence,an impact dynamics theoretical model of a bidirectional limited single-layer vibration isolation system with a segmented linear stiffness limiter is established.The theoretical model is then solved using the analytical method and compared with the impact response of the finite element method under different impact conditions.[Results]The analytical solution of the dynamic theoretical model is highly consistent with the finite element numerical solution under different impact conditions.[Conclusion]Through comparative analysis,the accuracy of the impact dynamics theor-etical model and solution method of the bidirectional limited single-layer vibration isolation system with seg-mented linear stiffness limiter is verified,providing a theoretical basis for research on the working principle and performance characteristics of vibration isolation systems with limiters.
关键词
限位器/分段线性/冲击动力学模型/有限元仿真
Key words
limiter/segmented linearity/impact dynamics model/finite element simulation
维普
万方数据