汽车技术
汽車技術
기차기술
AUTOMABILE TECHNOLOGY
2015年
2期
34-38
,共5页
橡胶衬套%动态特性%平顺性分析%模型
橡膠襯套%動態特性%平順性分析%模型
상효츤투%동태특성%평순성분석%모형
Rubber bushing%Dynamic characteristics%Ride analysis%Modeling
橡胶衬套的动态特性与载荷的激振频率、幅值等因素相关,其模型的准确性影响车辆平顺性的仿真精度。建立了包含材料弹性、粘弹性与弹塑性的橡胶衬套动态模型,分别采用多项式、分数导数与Bouc-wen模型描述橡胶衬套的弹性、频率相关性及振幅相关性。通过参数辨识确定衬套模型参数并进行仿真,验证了所建模型的准确性。
橡膠襯套的動態特性與載荷的激振頻率、幅值等因素相關,其模型的準確性影響車輛平順性的倣真精度。建立瞭包含材料彈性、粘彈性與彈塑性的橡膠襯套動態模型,分彆採用多項式、分數導數與Bouc-wen模型描述橡膠襯套的彈性、頻率相關性及振幅相關性。通過參數辨識確定襯套模型參數併進行倣真,驗證瞭所建模型的準確性。
상효츤투적동태특성여재하적격진빈솔、폭치등인소상관,기모형적준학성영향차량평순성적방진정도。건립료포함재료탄성、점탄성여탄소성적상효츤투동태모형,분별채용다항식、분수도수여Bouc-wen모형묘술상효츤투적탄성、빈솔상관성급진폭상관성。통과삼수변식학정츤투모형삼수병진행방진,험증료소건모형적준학성。
The dynamic properties of rubber bushing are correlated to exciting frequency and amplitude of loads, its modeling accuracy directly affects the vehicle ride simulation precision. In this research, the dynamic model including material elasticity, viscoelastic and elastic-plastic of rubber bushing is established. We use polynomial, fractional derivative and Bouc-wen model to describe the dependency of elasticity, frequency and amplitude of rubber bushing. With parameter identification and simulation of rubber bushing, the accuracy of the model is verified.