CAJ | 학술논문

通过实验对垂直振动激励下颗粒块的内耗进行了研究，测量了在不同激振强度下4种颗粒块的平均飞行时间。对实验结果进行了动力学分析，建立了竖直振动激励下颗粒块平均飞行时间与激振强度和内耗因子的定量关系，并用此关系对实验数据进行了拟合，拟合结果与实验结果吻合较好。对实验结果进行的理论分析表明，在相同激振强度下，内部结构不同的颗粒块的内耗与颗粒块内部颗粒尺寸、颗粒间介质的黏性以及外界的激振频率有关，其内耗特征是以颗粒间相互碰撞所耗散的能量为主。
통과실험대수직진동격려하과립괴적내모진행료연구，측량료재불동격진강도하4충과립괴적평균비행시간。대실험결과진행료동역학분석，건립료수직진동격려하과립괴평균비행시간여격진강도화내모인자적정량관계，병용차관계대실험수거진행료의합，의합결과여실험결과문합교호。대실험결과진행적이론분석표명，재상동격진강도하，내부결구불동적과립괴적내모여과립괴내부과립척촌、과립간개질적점성이급외계적격진빈솔유관，기내모특정시이과립간상호팽당소모산적능량위주。
The internal energy dissipation of the granular block under the vertical vibrating was studied through the experiment.The average flight time of four granular blocks for different vibrating strength was measured.Dynamic analysis of the experimental results was carried out.The quantitative relationship of the average flight time and the vibrating strength and the internal friction factor was used to fit the relationship for fitting the experimental data,the fitting results are well agreed with the experimental results.Theoretical analysis of the experimental results show that the internal energy dissipation of different internal structure depends on the particle size,particle viscidity and vibrating fre-quency for a given vibrating strength.The internal energy dissipation character is mainly the collision dissipation of each other.