Abstract：Random vibration test simulation of a specimen with rubber vibration isolations was carried out based on the integral finite element model of a vibration, a clamp and a specimen. Obvious attenuation phenomena of responses in mid and high frequency areas over several hundred hertz were found for thin shells and rubber vibration isolations during simulation process. Further investigations indicate nonlinearity of dynamic stiffness in the mid and high frequency areas is the main factor that results in the attenuation. Then the dynamic stiffness of the thin shells and the rubber vibration isolations were updated combined with real test results. The updated results show that dynamic stiffness of the thin shells and the rubber vibration isolations is enhanced with the increase of frequencies, the trend of which was described by graphs. Based on the updated dynamic stiffness, the attenuation problems were solved and the simulated results are in accordance with the real test ones.
范宣华 胡绍全 张志旭 宋琼. 考虑刚度非线性的某橡胶隔振试件随机振动试验仿真研究[J]. , 2009, 28(1): 174-176.
Fan Xuanhua Hu Shaoquan Zhang Zhixu Song Qiong. RANDOM VIBRATION TEST SIMULATION OF A SPECIMEN WITH RUBBER VIBRATION ISOLATIONS CONSIDERING OF STIFFNESS NONLINEARITY. , 2009, 28(1): 174-176.
2009, Vol. 28 
