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Abstract:
According to the experience of vibratory compaction, a nonlinear soil dynamic model was built. This model represents the dynamic characteristic of different soil compacted process including elastic-plastic nonlinearity and jump vibration. Based on the first order approximation, the equivalent damping coefficient and equivalent stiffness coefficient was deduced through the harmonic linearization method. By means of numerical simulation, the dynamic characteristic of roller-soil system was studied. During the beginning of vibratory compaction, soil represents elastic-plastic characteristic and the roller keeps coupling with soil. During the ending of vibratory compaction, density of soil increases and sub-harmonics may occur. When roller takes a jump vibration, chaos motion could be induced. Adjustment of excitation amplitude and excitation frequency could availably restrain the jump vibration and chaos motion of roller.
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Journal of System Simulation
ISSN: 1004-731X
CN: 11-3092/V
Year: 2007
Issue: 24
Volume: 19
Page: 5809-5811,5817
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 2
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