Numerical Modeling of Elastic Spherical Contact for Mohr-Coulomb Type Failures in Micro-Geomaterials
作者: Y. HanY.N. AbousleimanK.L. HullG.A. Al-Muntasheri
作者单位: 1Aramco Services Company: Aramco Research Center – Houston
2The University of Oklahoma
刊名: Experimental Mechanics, 2017, Vol.57 (7), pp.1091-1105
来源数据库: Springer Journal
DOI: 10.1007/s11340-017-0301-3
关键词: NanoindentationHertz contactStiffness and strengthShaleForce-deformation curve
英文摘要: The contact behavior for geological materials, such as reservoir shale rock, is simulated using the finite element method by considering a nano-indenter tip indenting into a geomaterial obeying the Mohr-Coulomb failure criterion. The deformation and slip at the micro-scale along the shear direction in grain-to-grain contact follows the Coulomb frictional/sliding failure criterion, while the linear elastic force-displacement law is enforced in the direction normal to the contact surface. A series of simulations are performed to study the effect of cohesion, friction angle, and tensile strength on the contact response. For a material with very high cohesion and frictionless contact, the indented geomaterial behaves almost purely as an elastic medium. In this case, the indentation process...
原始语种摘要: The contact behavior for geological materials, such as reservoir shale rock, is simulated using the finite element method by considering a nano-indenter tip indenting into a geomaterial obeying the Mohr-Coulomb failure criterion. The deformation and slip at the micro-scale along the shear direction in grain-to-grain contact follows the Coulomb frictional/sliding failure criterion, while the linear elastic force-displacement law is enforced in the direction normal to the contact surface. A series of simulations are performed to study the effect of cohesion, friction angle, and tensile strength on the contact response. For a material with very high cohesion and frictionless contact, the indented geomaterial behaves almost purely as an elastic medium. In this case, the indentation process...
全文获取路径: Springer  (合作)
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来源刊物:
影响因子:1.548 (2012)

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关键词翻译
关键词翻译
  • friction 摩擦
  • indenter 硬度计压头
  • material 充填料
  • contact 接触圈
  • cohesionless 非粘结性的
  • indentation 锯齿痕
  • spherical 球的
  • tensile 拉的
  • indenting 缩进
  • strength 强度