虚拟激励法及在汽车振动分析中的应用
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摘要
为了在汽车振动分析中推广虚拟激励法,以易于理解的方式对虚拟激励法的基本理论进行了论述。根据路面激励的统计特征,应用虚拟激励法建立了汽车前轮和后轮的虚拟路面激励。基于虚拟激励法,推导了1/2汽车四自由度系统振动的频率响应特性,建立了求取汽车系统振动响应量及其功率谱密度的公式,给出了求解汽车振动响应量功率谱密度的算例。结果表明:在对1/2汽车四自由度系统进行振动分析时,虚拟激励法是比傅里叶分析方法更简单的方法。
To apply pseudo excitation method to automotive vibration analysis,the basic theory of pseudo excitation method is summarized and discussed in an easy of understanding way.According to the pseudo excitation method,the pseudo road excitations in automotive front wheel and rear wheel are constructed by the statistical characteristics of road excitation.Based on pseudo excitation method,the frequency response characteristics of four freedom half model of an automotive system is deduced,and a formulae for calculating automotive vibration responses and their power spectrum density is presented.A car is selected to compute the power spectrum density of the car vibration responses.The results show that pseudo excitation method is more simple than Fourier analysis for studying four freedom half model of the automotive system vibration.
To apply pseudo excitation method to automotive vibration analysis,the basic theory of pseudo excitation method is summarized and discussed in an easy of understanding way.According to the pseudo excitation method,the pseudo road excitations in automotive front wheel and rear wheel are constructed by the statistical characteristics of road excitation.Based on pseudo excitation method,the frequency response characteristics of four freedom half model of an automotive system is deduced,and a formulae for calculating automotive vibration responses and their power spectrum density is presented.A car is selected to compute the power spectrum density of the car vibration responses.The results show that pseudo excitation method is more simple than Fourier analysis for studying four freedom half model of the automotive system vibration.
引文
[1]余志生.汽车理论[M].北京:机械工业出版社,1992
[2]林家浩.随机地震响应的确定性算法[J].地震工程与工程振动,1985,5(1):89~94
[3]Lin J H,Zhan W S,Li J J.Structural response to arbitarilycoherent stationary random exxitations[J].Computer andStructures,1994,50(5):629~634
[4]刘高,王秀伟.基于虚拟激励法的大跨桥梁抖振内力分析[J].计算力学学报,2003,20(6):649~654
[5]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004
[6]孙建梅,叶继红,程文瀼.多点输入下大跨度空间网格结构的虚拟激励法[J].工业建筑,2005,35(5):95~97
[7]庄表中,王行新.随机振动概论[M].北京:地震出版社,1982
[8]樊振江.机械振动及其计算机辅助测试技术[M].北京:机械工业出版社,1996
[9]高小丽.基于平面模型的汽车行驶平顺性软件开发及应用[D].吉林大学,2001
[10]喻凡,林逸.汽车系统动力学[M].北京:机械工业出版社,2005
[2]林家浩.随机地震响应的确定性算法[J].地震工程与工程振动,1985,5(1):89~94
[3]Lin J H,Zhan W S,Li J J.Structural response to arbitarilycoherent stationary random exxitations[J].Computer andStructures,1994,50(5):629~634
[4]刘高,王秀伟.基于虚拟激励法的大跨桥梁抖振内力分析[J].计算力学学报,2003,20(6):649~654
[5]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004
[6]孙建梅,叶继红,程文瀼.多点输入下大跨度空间网格结构的虚拟激励法[J].工业建筑,2005,35(5):95~97
[7]庄表中,王行新.随机振动概论[M].北京:地震出版社,1982
[8]樊振江.机械振动及其计算机辅助测试技术[M].北京:机械工业出版社,1996
[9]高小丽.基于平面模型的汽车行驶平顺性软件开发及应用[D].吉林大学,2001
[10]喻凡,林逸.汽车系统动力学[M].北京:机械工业出版社,2005
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