Sunday 21st of January 2018

Flexible boom numerical simulation and vibration characteristics analysis

Hongbin Tang and Wu Ren

Truck mounted concrete pump boom is typical flexible structure. Due to the increasing of boom length, the flexible characteristics play important role in the dynamics behavior. Three simulation models are built. The first is rigid model. The second is flexile model with four booms flexible used modal reduction technique. The last is added with boom hydraulic cylinder equivalent virtual spring damper with the second one. Then the trajectory, hydraulic cylinder force of the flexible booms are analyzed. Finally a test is done on a boom test rig to validate the proposed approach is correct. It provides method to vibration control , trajectory prediction for such flexible structure

Keywords: flexible boom; multi-body dynamics; tip displacement; vibration

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Hongbin Tang
College of Automobile and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410004, China

Wu Ren
School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083,China

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