Simulation research on accelerated life test of rubber vibration damper

WANG Bo-ping1， ZHAI Jing-yu2， LI Ya-shu2， HAN Qing-kai3
（1. Department of Flight Theory， Aviation University of Air Force， Changchun 130022， China；
2. School of Mechanical Engineering and Automation， Northeastern University， Shenyang 110819， China；
3. School of Mechanical Engineering， Dalian University of Technology， Dalian 116024， China）

Abstract： Aiming at reducing the test period of rubber damping element，the simulation on the accelerated life test of rubber vibration damper was carried out. The 3D solid and finite element model were established by the use of CATIA and ABAQUS software，adopting the bi-parameter Mooney-Rivilin model as rubber material. The loading frequency boundary of the accelerated life test was obtained by the modal analysis of rubber damping element in working state. Then stress distribution of rubber damping element under three different time-variant displacement loads was obtained by the transient dynamics analysis and consequently the position fatigue damage tends to occur was identified. Finally the damage periods in three cases were determined respectively based on the strain-life curve using Manson-Coffin. The results indicate that the test period can be shortened effectively by virtue of reasonably higher loading frequency and level with the same damage model.
Key words： rubber vibration damper； accelerated life test； numerical simulation