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Abstract:
The resilience of the drum of a vibration roller in horizontal and vertical directions reveals a hysteresis pattern different from that of the displacement during slant excitation compaction. When the soil compactness is high enough, the jump vibration and slipping of the vibration roller may appear. Considering the two facts mentioned above, kinetic equations under various compaction conditions and at different stages were established in terms of a model with horizontal symmetric hysteretic and vertical asymmetric hysteretic curves according to soil property parameters. According to the first order approximation, the hysteretic resilience was linearlized and its equivalent damping coefficient and equivalent stiffness coefficient were deduced by using the harmonic linearization method. By means of numerical simulation, the hysteresis characteristics under three compaction conditions and correlated coupled properties between horizontal and vertical directions, namely, the contraction vibration, slip-rolling and jump vibration were in turn analyzed, and the traufer between them was revealed. The adjustment of excitation amplitude and excitation frequency could availably restrain the jump vibration and slipping of the drum to ensure the compaction quality, efficiency and driving comfort in the compaction process. © 2015, Chinese Vibration Engineering Society. All right reserved.
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Journal of Vibration and Shock
ISSN: 1000-3835
CN: 31-1316/TU
Year: 2015
Issue: 22
Volume: 34
Page: 47-53
Cited Count:
SCOPUS Cited Count: 2
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
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