Abstract：To research on the vibration of the special telescopic boom crane stretching with payload，the telescopic boom was equivalent to a fixed cantilevered beam with multiple steps and a stretching beam with varying length. Based on the equation of the beam’s vibration and the theory of modal superposition, the mathematic vibration model of the special telescopic boom crane was established. Using the Rayleigh-Ritz method, the natural frequency of the transverse vibration was calculated according to the boundary conditions, the response of the generalized coordinates of each joint arm was derived, and the deformations curves was then obtained. The analysis of the theoretical results show that the stiffness of the beam and the stretching speed is the main factors influencing the vibration of the beam, the smaller of the stiffness and the faster of the speed, the larger of the deformations. The experiment was done through the remoulding of the HIAB-033T boom, and the experiment results was consistent with the theoretical results, which verified the correctness of the mathematic vibration.
杜文正，张金星，姚晓光，谢 政，马长林. 特种起重机伸缩臂振动特性建模分析与试验[J]. 振动与冲击, 2016, 35(22): 169-175.
DU Wen-zheng, ZHANG Jin-xing, YAO Xiao-guang, XIE Zheng, MA Chang-lin. Mathematic Vibration Model and Experiment of Special Telescopic Boom Crane. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(22): 169-175.
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