HU Hui qiang1, MA Ying kun2, HU Jun yi1

 

(1. College of Mechanical and Aerospace, Zhejiang Vocational and Technical Institute of Transportation,

 

Hangzhou 311112, China; 2. Zhengzhou Yutong Heavy Industries, Zhengzhou 450051, China)

 

 

Abstract: Aiming at characterization of the dynamic behavior of vehicle frame system with MR damper whose nonlinear hysteresis was rather complicated, a hybrid modeling approach based on SVM and FEM was developed. The model of magneto rheological (MR) damper consisted of knowledge based model and SVM model based on experimental data. The FEM model of vehicle frame was established in Simulink where the SVM hybrid model of MR damper was embedded in. Thus a hybrid model for vehicle frame system was obtained and validated with experimental data in different conditions. The results indicate that the hybrid model can capture the dynamic characteristics of vehicle frame system accurately. The hybrid model can also provide a basis for the design of frame with the existing of FEM model.

 

Key words: hybrid modeling; support vector machine; magneto rheological (MR) damper; vehicle frame