Research on Hysteresis Model of Restoring Force of Metal Rubber

Abstract

Abstract:

According to the main deformation characteristics of metal rubber, the configuration and contact mode of wire spiral coil were analyzed. The microstructure unit which was based on curved beam of variable length and the contact action model were put forward. Combining with distribution regularity of the friction contact point, a new hysteresis model of restoring force of metal rubber was established. It was easy to predict restoring force of loading and unloading process under different deformation amplitudes. The experiments for metal rubber specimens with different relative densities were carried out to verify the theory model. The results show that the theoretic calculations are consistent with the experimental data. It provides theoretical basis for studying and predicting the stiffness and damping of metal rubber.

Key words: metal rubber, hysteresis model, curved beam, damping material

摘要：

依据金属橡胶变形的主要特征，对金属丝螺旋卷的空间位形、接触模式进行了分析。提出了基于变长度曲梁的细观结构单元和接触作用模型，考虑摩擦接触点分布规律，建立了金属橡胶恢复力的迟滞模型，实现了金属橡胶在不同变形幅值下的加卸载恢复力的预测。通过不同相对密度的金属橡胶试件对所建模型进行了试验验证，发现理论计算结果和试验结果有较好的一致性。

关键词: 金属橡胶, 迟滞模型, 曲梁, 阻尼材料

CLC Number:

TB302

Cao Fengli, Bai Hongbai, Ren Guoquan, Fan Hongbo. Research on Hysteresis Model of Restoring Force of Metal Rubber[J]. China Mechanical Engineering, 2014, 25(3): 311-314,320.

曹凤利, 白鸿柏, 任国全, 范红波. 金属橡胶恢复力的迟滞模型研究[J]. 中国机械工程, 2014, 25(3): 311-314,320.

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