Experimental Study on Vibration and Sound Radiation Reduction of Ring Damping Wheels
In this study, two ring damping devices are installed on two straight web metro wheels.Experimental study on vibration and sound radiation reduction of the ring damping and standard wheels are conducted in a semi-anechoic room.Impact-hammer and steel balls are used to hit the wheels in the test as the excitations.The vibration and sound radiation of the damping and standard wheels are measured and analyzed.The results show that, under the axial excitation, the damping ratio of the damping wheels increases significantly, compared to the standard wheel.The damping ratio increases about 20 times at these prominent resonance frequencies.The vibration and sound of the damping wheels reduce significantly in the frequency range of 0-8 kHz.The sound energy level (SEL) of the damping wheel I (with single ring) is reduced by about 7 dB and the SEL of the damping wheel Ⅱ (with double rings) is reduced by about 9 dB.The maximum reduction in the SEL at the significant resonance can reach about 27 dB.
wheel/rail noise vibration and noise reduction ring damped wheels damping ratio
J.Han X.B.Xiao R.Q.Wang X.S.Jin X.J.Yin X.L.Gao
State Key Laboratory of Traction Power Southwest Jiaotong University, Chengdu, Sichuan, China Qingdao Create Environment Control Technology Co.Ltd, Qingdao, Shandong, China
国际会议
第六届国际环境振动学术研讨会(6th International Symposium on Environmental Vibration)(ISEV2013)
上海
英文
430-438
2013-11-08（万方平台首次上网日期，不代表论文的发表时间）