Dynamic analysis of two-axis hydraulic vibration test system with clearance joint
WEN Xiang1 CHEN Zhang-wei1 HE Hui-nong 2
1.The State Key Lab of Fluid Power and Control, Zhejiang University, Hangzhou 310027, China; 2. College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou 310027, China;
Clearance in joint of motion is inevitable for assembly and manufacturing error and so on. An non-linear contact force model related to clearance joint is established in order to investigate the influence of revolute joint with clearance on the dynamic responses, and friction effect is considered by using Threfall force model based on Coulomb’s friction law. Dynamic simulation investigation is carried out by importing Two-axis hydraulic vibration test system contained with clearance revolute joint into ADAMS . The results of simulation indicate that clearance size and vibration frequency pose a large effect to the acceleration response of hydraulic vibration test system, that is, the peak acceleration response is increasing with increasing of the vibration frequency and clearance size, however, the vibration frequency and clearance size have a slight influence on displacement response.