In order to analyze the stiffness characteristics of Assembled Rubber Metal Isolator (ARMI) more accurately, the present work elaborates on the detailed numerical modeling and analysis process of the ARMI, considering prestressing condition. By comparing the applicability of different constitutive models, the reasonable parameters of the proposed Money-Revlon constitutive model were determined by rubber compression test and least square method. Considering the structural characteristics and complex constraints of the isolator, a step-by-step analysis method is described, based on the rigid-flexible coupling theory and the contact cutting algorithm. The full Newton-Raphson algorithm is used to simulate the mechanical behavior of elastic components in ARMI, during the whole compression-torsion deformation process, while the results are verified by theoretical calculation and practical experiments, respectively. For the assembly process, the maximum relative error between numerical results and empirical formulas is 3.97%. The derived torsional curve, under the simulated pre-stress conditions, is in good agreement with the experimental results, and the maximum error is less than 8.43%. The achieved accuracy is significantly improved, compared to the existing simulation model that does not consider the pre-compression process. The proposed approach provides an effective method for the analysis of same type vibration isolator.

为了更准确地分析装配式橡胶金属隔振器（ARMI）的刚度特性，本工作详细阐述了考虑预应力条件的 ARMI 的详细数值建模和分析过程。通过比较不同本构模型的适用性，通过橡胶压缩试验和最小二乘法确定了Money-Revlon本构模型的合理参数。考虑到隔振器的结构特点和复杂的约束条件，基于刚柔耦合理论和接触切割算法，提出了一种分步分析方法。采用完整的Newton-Raphson算法模拟了ARMI中弹性部件在整个压缩扭转变形过程中的力学行为，并分别通过理论计算和实际实验验证了结果。对于装配过程，数值结果与经验公式之间的最大相对误差为3.97%。推导的扭转曲线在模拟预应力条件下与试验结果吻合较好，最大误差小于8.43%。与现有不考虑预压缩过程的仿真模型相比，所达到的精度显着提高。该方法为同类型隔振器的分析提供了一种有效的方法。