Numerical modeling and experimentation of dynamic indentation with single and triple indenters on Kuru granite

被引：0
|
作者：
Saksala, T. [1 ]
Gomon, D. [2 ]
Hokka, M. [2 ]
Kuokkala, V-T [2 ]
机构：
[1] Tampere Univ Technol, Dept Engn Design, FIN-33101 Tampere, Finland
[2] Tampere Univ Technol, Dept Mat Sci, FIN-33101 Tampere, Finland
来源：
ROCK DYNAMICS AND APPLICATIONS - STATE OF THE ART | 2013年
基金：
芬兰科学院;
关键词：
SIMULATION;
D O I：
暂无
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
A numerical method for simulation of dynamic indentation is presented in this paper. The method was validated via dynamic indentation experiments with single and triple indenters on Kuru granite. The simulation method includes a constitutive model for rock and a model, implemented in FEM, to simulate the dynamic bit-rock interaction. The constitutive model, being a combined viscoplastic-damage model, accommodates the strong strain-rate dependency of rock via viscoplastic hardening/softening laws both in tension and compression. The indentation experiments were carried out with single and triple-button indenters using a setup similar to percussive drilling. Despite the present continuum approach, the model can capture the salient features of the dynamic bit-rock interaction involved in dynamic indentation and applications alike.
引用
收藏
页码：415 / 421
页数：7
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