| 颗粒介质弹性参数测量方法及装置研究 |
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| 引用本文： | 马方园,刘程林,苏煜,史庆藩,王洪涛,马少鹏.颗粒介质弹性参数测量方法及装置研究[J].实验力学,2014,29(3):286-293. |
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| 作者姓名： | 马方园 刘程林 苏煜 史庆藩 王洪涛 马少鹏 |
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| 作者单位： | 北京理工大学 宇航学院, 北京 100081;北京理工大学 宇航学院, 北京 100081;北京理工大学 宇航学院, 北京 100081;北京理工大学 物理学院, 北京 100081;清华大学 核能与新能源技术研究院, 北京 100084;北京理工大学 宇航学院, 北京 100081 |
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| 基金项目： | 国家自然科学基金11372038,国家自然科学基金11172039 |
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| 摘 要： | 本文发展了一种实施简便的颗粒介质弹性参数测量方法,设计并加工了基于该方法的实验装置。利用加载设备对该实验装置在一个方向上加卸载,在加载方向和与之垂直的另一方向上测量载荷和位移后即可获得颗粒介质的等效弹性模量和泊松比。该实验装置的容器还可方便地调节尺寸,适用于测量不同粒径颗粒堆积在不同大小容器时的弹性参数。本文还研究了尺寸效应的影响,分析了容器尺寸和颗粒粒径分别对介质弹性参数的影响规律。
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| 关 键 词： | 颗粒介质 弹性参数 尺寸效应 |
Measurement Method and Device for Elastic Parameters of Granular Medium |
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| MA Fang-yuan,LIU Cheng-lin,SU Yu,SHI Qing-fan,WANG Hong-tao and MA Shao-peng.Measurement Method and Device for Elastic Parameters of Granular Medium[J].Journal of Experimental Mechanics,2014,29(3):286-293. |
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| Authors: | MA Fang-yuan LIU Cheng-lin SU Yu SHI Qing-fan WANG Hong-tao and MA Shao-peng |
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| Institution: | School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Physics, Beijing Institute of Technology, Beijing 100081, China;Institute of nuclear and new energy technology, Tsinghua University, Beijing 100084, China;School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | A simple experimental method was developed for elastic parameters measurement of granular medium. Based on this method, an experimental device was designed and processed. Equivalent modulus elastic and Poisson's ratio of granular medium can be obtained from the load and displacement captured in both vertical and one of the horizontal directions during loading and unloading along the vertical direction. Using this device, elastic parameters of glass pebble-bed with different sizes were measured in this size adjustable container. Size effect in experiments was taken into account, and the effect of container size and granular diameter on elastic medium parameters were analyzed respectively. |
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| Keywords: | granular medium elastic parameter size effect |
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