An investigation of the applicability of contact models to the normal load-deformation behaviour of artificially shaped granite
An investigation of the applicability of contact models to the normal load-deformation behaviour of artificially shaped granite
复制标题
接触模型对人造花岗岩正常载荷变形行为的适用性研究
DOI：
10.1007/s11440-023-02123-9
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发表时间：
2023
期刊：
影响因子：
5.7
通讯作者：
Altuhafi F
中科院分区：
文献类型：
--
作者：
Altuhafi F
根据人工成型花岗岩石块接触法向载荷的实验数据，测试了不同可用接触模型的有效性。使用不同的接触形状（球形、圆锥形和平面）和粗糙度组合测试了三个弹性模型和两个塑性模型。结果发现，与赫兹模型的偏差随着表面粗糙度的增加而增加，通过使用考虑表面粗糙度和表面分形的模型通常可以更好地表示数据。所有这些模型的有效性似乎仅限于过度塑性变形开始发生之前，之后接触似乎在恒定刚度下变形。
The validity of different available contact models is tested against experimental data for contact normal loading of artificially shaped granite stones. Three elastic models and two plastic models were tested with different combinations of contact shape (spherical, conical and flat) and roughnesses. It was found that the deviation from the Hertz model increased with surface roughness with a generally better representation of the data achieved by using models which consider surface roughness and the fractality of the surface. The validity of all these models seems to be limited to before excessive plastic deformations start taking place, after which the contact seems to deform under constant stiffness.
影响因子：
5.8
作者：
Cavarretta, I.;Coop, M.;O'Sullivan, C.
通讯作者：
O'Sullivan, C.
铁路道碴颗粒间摩擦力的研究进展
DOI：
10.1680/jgele.19.00080
发表时间：
2020
期刊：
Géotechnique Letters
影响因子：
--
作者：
C. P. Y. Wong;M. Coop
通讯作者：
M. Coop
影响因子：
2.6
作者：
Pohrt, Rom;Popov, Valentin L.
通讯作者：
Popov, Valentin L.