| 车用橡胶衬套的建模及其参数辨识方法的研究 |
| Research on Model Establishment and Parameter Identification Method of Automotive Rubber Bushing |
| 投稿时间：2024-07-02 修订日期：2024-07-02 |
| DOI：10.12136/j.issn.1000-890X.2026.05.0323 |
| 中文关键词: 橡胶衬套 参数模型 参数辨识 静态刚度 动态刚度 |
| 英文关键词: rubber bushing parameter model parameter identification static stiffness dynamic stiffness |
| 基金项目: |
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| 摘要点击次数: 160 |
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| 中文摘要: |
| 提出一种预测车用橡胶衬套（简称橡胶衬套）的动刚度混合策略，研究橡胶衬套的建模及其参数辨识方法。首先提出由弹性单元、摩擦单元和高阶分数阶导数粘弹性单元并联组成的参数模型，该模型用于描述橡胶衬套的刚度的振幅-频率相关性；构建橡胶衬套的有限元模型，设计轴向静态试验并验证有限元模型的有效性，分析橡胶衬套在静态和动态仿真工况下的非线性力学特性，并针对粘弹性模型参数多和非线性强的特点，提出基于自适应混沌粒子群优化算法的参数识别方法以预测橡胶衬套的刚度；对比分析橡胶衬套的参数模型与有限元模型的刚度的预测结果，发现参数模型能够正确预测橡胶衬套的静刚度和动刚度的振幅-频率相关性。 |
| 英文摘要: |
| A hybrid strategy for predicting the dynamic stiffness of automotive rubber bushing（referred to as the rubber bushing） was proposed，and the model establishment and parameter identification method of the rubber bushing were studied.Firstly，a parameterized model consisting of elastic elements，friction elements and high-order fractional derivative viscoelastic elements in parallel was proposed to describe the amplitude-frequency correlation of the stiffness of the rubber bushing.Then a finite element model of the rubber bushing was constructed，and axial static tests were designed to verify the effectiveness of the finite element model.The nonlinear mechanical characteristics of the rubber bushing under static and dynamic simulation conditions were analyzed，and a parameter identification method based on adaptive chaos particle swarm optimization algorithm was proposed to predict the stiffness of the rubber bushing，taking into account the characteristics of multiple parameters and strong nonlinearity in the viscoelastic model.By comparing and analyzing the results of the stiffnesses of the parameter model and finite element model of the rubber bushing，it was found that the parameter model could correctly predict the amplitude-frequency correlation of the static and dynamic stiffnesses of the rubber bushing. |
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