基于超弹性本构模型的橡胶减振垫仿真分析

Simulation Analysis of Rubber Damping Pads Based on Hyperelastic Constitutive Model

橡胶减振垫作为一种重要的减振元件,广泛应用于轨道交通领域。橡胶材料具有优异的弹性、阻尼性能和耐久性,能够有效地吸收和隔离振动,保护轨道结构和周围环境。通过单轴拉伸实验研究橡胶减振垫的力学性能,实验数据与超弹性模型的拟合结果证明三阶Ogden模型可以准确描述橡胶减振垫的力学行为。该文建立橡胶减振垫与浮置板的有限元模型,模拟分析橡胶减振垫在列车载荷作用下的受力与变形特性,结果表明动载对减振垫的力学性能影响更显著,降低减振垫柱高能减少应力集中现象。该研究的实验和仿真结果为橡胶减振垫的优化设计提供科学支撑,并为增强其稳定性和耐久性提供新的思路。

Rubber vibration isolation pad,as significant vibration damping components,are widely applied in the rail transit sector.The rubber material,characterized by its superior elasticity,damping capability,and durability,efficiently absorbs and insulates vibrations,safeguarding the integrity of the track structure and the surrounding environment.This study conducted uniaxial tensile tests to investigate the mechanical properties of rubber vibration isolation pad.The experimental data were found to be in good agreement with the hyperelastic model,substantiating that the third-order Ogden model accurately represents the mechanical behavior of rubber vibrationisolation pad.A finite element model was established in this paper for the rubber vibration isolation pad and floating slabs to simulate and analyze the stress and deformation characteristics under the action of train loads.The findings indicate that dynamic loads significantly affect the mechanical properties of the isolation pad,and reducing the column height of the vibration isolation pad can effectively alleviate stress concentration.The experimental and simulation results of this study provide a scientific foundation for the optimized design of rubber vibration isolation padand offer innovative approaches to enhance their stability and durability.