Vibration Performance of Hydraulic Erecting Cylinder in Collision at Full Stroke

doi:10.3969/j.issn.1000-1093.2015.04.016

Abstract

Abstract: The “free movement-contact deformation” model is adopted to research the dynamics of hydraulic erecting cylinder at full stroke, and the dynamic equations are built. The vibration performance of full stroke cylinder with and without collision-gaps is studied. Numerical results show that the vibration of piston-rod is more complicated in cylinder due to the collision between piston-rods and cylinders. The piecewise linear characteristics are displayed on hydraulic cylinder system under low frequency harmonic load, and the nonlinear characteristics are displayed under slightly high frequency harmonic load. The gap between the piston-rod and the cylinder increases the stroke of the piston-rod, significantly decreases the displacement and acceleration amplitude of the piston-rod in low-range, decreases the high-frequency resonance peak of acceleration of the piston-rod, and decreases the frequency and amplitude of the impact force between the piston-rod and cylinder. The results provide theoretical basis and methods of analysis for structural design and control design of erecting system.

Key words: ordnance science and technology, erecting system, collision, hydraulic cylinder, vibration

CLC Number:

TP136

SUN Chuan-bin, MA Da-wei, ZHU Zhong-ling. Vibration Performance of Hydraulic Erecting Cylinder in Collision at Full Stroke[J]. Acta Armamentarii, 2015, 36(4): 681-686.

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