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Investigation on the shear moduli and damping ratios of silica gel

机译:硅胶的剪切模量和阻尼比的研究

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摘要

Silica gel, a typical desiccant widely used in industry to absorb moisture, is a porous inert colloid with different sizes in beaded or angular shape. The mixture of silica gel and pore fluid of matched refractive index has been used as transparent media to mimic the behavior of sand. Previous studies have been focused on the static properties of transparent soil. In the current study, the dynamic properties of silica gel, including small-strain shear modulus and damping ratio, were examined through a series of resonant column tests. Four different gradations of silica gel were tested under confining pressures of 50, 100, 200, 300, and 400 kPa. The test results fully displayed the dynamic behavior of the silica gel. The test data also revealed that silica gel has a certain similar dynamic behavior as those of natural soils. With the test findings, silica gel could be used as a surrogate for natural soils in dynamic transparent soil model tests.
机译:硅胶是一种广泛用于工业中以吸收水分的典型干燥剂,是一种多孔的惰性胶体,其珠状或角形大小不同。硅胶和折射率相匹配的孔隙流体的混合物已用作模拟砂粒行为的透明介质。先前的研究集中在透明土壤的静态特性上。在当前的研究中,硅胶的动力学特性,包括小应变剪切模量和阻尼比,通过一系列共振柱测试进行了研究。在50、100、200、300和400 kPa的限制压力下测试了四种不同等级的硅胶。测试结果充分显示了硅胶的动态行为。测试数据还表明,硅胶具有与天然土壤相似的动力学行为。根据测试结果,硅胶可以用作动态透明土壤模型测试中天然土壤的替代品。

著录项

  • 来源
    《Granular matter》 |2014年第4期|449-456|共8页
  • 作者

    Honghua Zhao; Louis Ge;

  • 作者单位

    Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China;

    Department of Civil Engineering, National Taiwan University, Taipei 10617, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Silica gel; Resonant column tests; Shear modulus; Damping ratio;

    机译:硅胶;共振柱测试;剪切模量;阻尼比;

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