摘要
根据橡胶动模量和刚度的实验结果,拟合出隔振器刚度随频率的变化关系式,并通过隔振器的动、静刚度确定其待定系数。在传统四端参数法的计算中计入了刚度的频散效应,以提高橡胶隔振器阻抗计算的准确性。同时设计了一种基于纯加速度测量的阻抗测试方法并对两型隔振器进行了阻抗测试,由实测数据与不同刚度假设下的计算结果比较可见:计入刚度频散效应后的隔振器阻抗计算更精确,而基于加速度测量的阻抗测试是可行的。
The relationship between stiffness of isolators and their vibration frequency was deduced according to testing results of rubber＇s Young＇s modulus and stiffness,and isolators＇static stiffness and dynamic stiffness were used to determine relevant coefficients.Stiffness dispersion was brought into theoretical impedance estimation of rubber isolators based on four-polar parameter equations with a higher accuracy.On the other side,an impedance testing method based on acceleration measurement was designed and two types of rubber isolators were tested with this method.Comparing the tested results and the estimation ones under different stiffness modes,it was shown that the impedance estimation is more accurate considering stiffness dispersion was shown and the impedance testing method based on acceleration measurement is feasible.
出处
《振动与冲击》
EI
CSCD
北大核心
2016年第9期164-167,183,共5页
Journal of Vibration and Shock
基金
国家自然科学基金资助项目(51109131)
关键词
隔振器
阻抗
刚度频散
加速度测量
isolators
impedance
stiffness dispersion
acceleration measurement
