Research on the dynamic characteristics of horizontal excitation compaction system considering slip-roll of the vibratory drum
ZHENG Shu-he;LIN Shu-wen;College of Mechanical Engineering & Automation,Fuzhou University;College of Mechanical Electrical Engineering & Automation,Fujian Agriculture and Forestry University;
Based on the horizontal-excitation character of the intelligent vibratory roller and soil parameters,two compaction working condition such as pure rolling and slip-roll was classified during the compaction process. According to the working condition in stages the 2-def dynamic model was established. Taking the XG6133D intelligent roller as an example,the magnitude-frequency characteristics of the compaction system and the dynamic responses of the drum were analyzed by means of numerical simulation. First order,second order resonance frequency and resonance amplitudes change along with the shock absorber parameters and soil parameters. During the compaction process,the motion of vibratory drum occurred from single periodic motion to periodic doubling motion,the peaks and valleys of its time response were induced to be distorted,and spectrums present in addition to the fundamental wave only rich odd harmonics. The distortion and its spectrum harmonic diversity were increasingly clear along with the aggravation of the compaction. In theory the conclusion of the article is valuable to forecast the compaction status and improve the compaction quality.