Research on vibration principle of arm system of concrete pump truck

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (9) : 259-259.

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Research on vibration principle of arm system of concrete pump truck

WANG Bin-hua; LU Peng-min

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Abstract

In order to analyze the vibration problem of arm system on concrete pump truck from the perspective of fluid-solid interaction theory, its dynamic equation is established based on cantilever conveying pipe theory. Fluctuating velocity of concrete flow and vibration boundary conditions of arm system are experimentally measured. The vibration responses of arm system with two speeds of fluctuating and constant velocity are achieved by the method of simulation calculation. Simulation results show that displacement responses are in agreement with each other. Therefore, the velocity fluctuation has little influence on stress history of arm system. When the swivel table of concrete pump truck is under stationary state, the vibration responses of arm system with two speeds are achieved by the method of simulation calculation. Simulation results show that car-body vibration as a result of cylinder impact action has great influence on arm system vibration. Therefore, it is proposed that the vibration of swivel table should be mainly considered.

Key words

concrete pump truck / arm system / fluid-solid interaction / simulation analysis

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WANG Bin-hua; LU Peng-min. Research on vibration principle of arm system of concrete pump truck[J]. Journal of Vibration and Shock, 2011, 30(9): 259-259