Hybrid modeling approach for vehicle frame coupled with nonlinear dampers |
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Authors: | Yingkun Ma Shilin Xie Xinong Zhang Yajun Luo |
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Institution: | Department of Engineering Mechanics, School of Aerospace, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, Shaanxi Province, PR China |
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Abstract: | The vehicle frame system comprises frame structure and nonlinear dampers. In order to investigate the effects of frame flexibility and nonlinear hysteresis, a hybrid modeling approach for vehicle frame coupled with nonlinear dampers will be proposed. Before that, a complex model for nonlinear damper is developed consisting of knowledge-based model and support vector machine (SVM) model. The frame structure is modeled by FEM where the SVM complex model of damper is embedded in. Thus a hybrid model for vehicle frame system is established and successfully validated via a dummy vehicle riding in different conditions. The results show that the hybrid model can capture the nonlinear dynamic characteristics accurately. The hybrid model can also provide a basis for structural design with the existing of FEM model. |
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