| 竖直振动颗粒物厚层中冲击力分岔现象 |
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| 引用本文： | 姜泽辉,李斌,赵海发,王运鹰,戴智斌.竖直振动颗粒物厚层中冲击力分岔现象[J].物理学报,2005,54(3):1273-1278. |
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| 作者姓名： | 姜泽辉 李斌 赵海发 王运鹰 戴智斌 |
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| 作者单位： | 哈尔滨工业大学应用物理系，哈尔滨 150001 |
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| 基金项目： | 哈尔滨工业大学跨学科交叉性研究基金（批准号：HIT.MD200232）资助的课题. |
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| 摘 要： | 实验研究了竖直振动颗粒物厚层中颗粒对容器底部的压力. 发现这种压力是脉冲式的，并表现出受振动加速度控制的倍周期分岔现象. 在颗粒层底部观察到颗粒密堆积在一起的聚集态. 聚集态内颗粒的自由程较小，并像一个整体一样运动.
关键词：
颗粒物质
混沌
倍周期分岔
非弹性碰撞
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| 关 键 词： | 颗粒物质 混沌 倍周期分岔 非弹性碰撞 |
| 文章编号： | 1000-3290/2005/54(03)/1273-06 |
| 收稿时间： | 2004-04-27 |
Phenomena of impact bifurcations in vertically vibrated granular beds |
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| JIANG Ze-hui,Li Bin,Zhao Hai-Fa,Wang Yun-Ying,DAI Zhi-bin.Phenomena of impact bifurcations in vertically vibrated granular beds[J].Acta Physica Sinica,2005,54(3):1273-1278. |
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| Authors: | JIANG Ze-hui Li Bin Zhao Hai-Fa Wang Yun-Ying DAI Zhi-bin |
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| Abstract: | The pressure of granular mass on container bottom has been experimentally investigated in vertically vibrated granular beds. Pulse signals are found of the pressure, and the pulse strength undergoes subharmonic bifurcations controlled by the scaled vibration acceleration. Condensed state of particles is observed at the bed bottom, in which the particles are closely packed, with small free path, and move like a bulk block. |
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| Keywords: | granular materials chaos period_doubling bifurcation inelastic collision |
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