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基于修正Craig-Bampton方法的輪胎動態(tài)子結(jié)構(gòu)模型
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Dynamic Substructure Tire Model Based on Modified Craig-Bampton Method
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    摘要:

    以輪胎模態(tài)試驗獲取的模態(tài)參數(shù)和參數(shù)化輪胎有限元模型為基礎(chǔ)，通過優(yōu)化方法使有限元模型的計算模態(tài)參數(shù)與試驗?zāi)B(tài)參數(shù)一致，獲得動力學(xué)等效的輪胎模型，將該模型視作連接車輛與地面的子結(jié)構(gòu)，基于修正的Craig-Bampton方法和輪胎接地界面特性，得到輪胎子結(jié)構(gòu)的主模態(tài)集和約束模態(tài)集，使用模態(tài)綜合方法實現(xiàn)輪胎子結(jié)構(gòu)模型與車輛多體動力學(xué)模型的耦合，此模型可廣泛應(yīng)用于車輛平順性仿真和整車動態(tài)優(yōu)化設(shè)計。

    Abstract:

    An approach to modeling parameterized FEM tire based on experimental modal parameters was proposed. Natural frequencies, mode shapes and damping ratios of FEM tire model with the optimal parameters had good agreement with modes acquired by the experiment. With Craig-Bampton method and tire-ground contact characteristic obtained from tire static radial compression experiment, normal and constraint modes of FEM tire model were extracted for building dynamic substructure model of tire. The coupling of tire substructure model and vehicle multi-body model was realized through modal synthesis, which can contribute to vehicle dynamic simulation and optimization design.

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張曉陽,孫蓓蓓,陳南,孫慶鴻.基于修正Craig-Bampton方法的輪胎動態(tài)子結(jié)構(gòu)模型[J].農(nóng)業(yè)機械學(xué)報,2009,40(9):41-45.Dynamic Substructure Tire Model Based on Modified Craig-Bampton Method[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(9):41-45.

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