School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China.
Rev Sci Instrum. 2023 Jan 1;94(1):015105. doi: 10.1063/5.0118415.
In this study, the complete design process of a metal rubber isolator using a numerical method applied in automobile underwater gliders (AUGs) is researched. A ring-like metal rubber isolator that has the potential to reduce the vibration of the AUGs is proposed. In the numerical design method, the equivalent cantilever beam model is used to identify the mechanical properties of the metal rubber isolator, whose accuracy is verified by experiment. The static stiffness and dynamic stiffness are gained through a fitting method, considering different mass loadings. Different material parameters of a metal rubber isolator, such as relative densities, wire diameters, wire spiral pitch diameters, and mass loading from the power system, greatly influence the mechanical properties and stiffness characteristic. The vibration isolation performance of a metal rubber isolator applied in the AUG is evaluated by a nonlinear single degree of freedom dynamic model, which is solved by the harmonic balance method. The linear stiffness component of the metal rubber isolator is the main influence factor for the vibration isolation performance. The nonlinear stiffness component could shift the isolation frequency.
本研究采用数值方法研究了应用于水下滑翔机（AUG）的金属橡胶隔振器的完整设计过程。提出了一种具有降低 AUG 振动潜力的环形金属橡胶隔振器。在数值设计方法中，使用等效悬臂梁模型来确定金属橡胶隔振器的力学性能，通过实验验证了其准确性。通过拟合方法获得了不同质量负载下的静态刚度和动态刚度。金属橡胶隔振器的不同材料参数，如相对密度、线径、线螺旋节距直径和来自动力系统的质量负载，对力学性能和刚度特性有很大影响。通过求解谐波平衡法的非线性单自由度动力模型，评估了金属橡胶隔振器在 AUG 中的隔振性能。金属橡胶隔振器的线性刚度分量是隔振性能的主要影响因素。非线性刚度分量可以改变隔振频率。
