相关实验视频

Updated: Feb 19, 2026

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction
10:36

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction

Published on: May 20, 2018

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模拟不同矿山面长度的不规则岩石样本的变形特征

Yubo Zhang1, Xiao Liu2,3, Shaoren Wei1

  • 1School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, 454003, China.

Scientific reports
|February 17, 2026
PubMed
概括

在不规则的标本中增加采矿长度会减少峰值应力和内部损伤,影响地下采矿中的屋顶稳定性和气体迁移. 更长的采矿长度会降低承载能力和峰值强度.

关键词:
不同的采矿长度不同的采矿长度.不规则形状的标本.机械性质 机械性质数字模拟 数字模拟

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When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
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Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
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