单轴压缩下岩石材料尺寸效应的数值模拟

详细信息

Numerical simulation on size effect of rock material under uniaxial compression

1. Pingdingshan Institute of Technology, Pingdingshan 467000, China;
2. Institute of Geotechnical Engineering, Hehai University, Nanjing 210098, China

摘要: 考虑到岩石材料的非均质性,应用岩石破裂过程分析系统RFPA^2D,对端面有摩擦和无摩擦两种条件下同直径不同长度的岩样,进行了单轴压缩下的数值模拟研究,并对模拟结果寻求了试验验证。结果表明,岩石强度的长度效应是由于岩样端面摩擦效应所致,而并非根源于材料本身的非均质性。
- 尺寸效应 /
- 非均质性 /
- 岩石强度 /
- 数值模拟
Abstract: Based on the heterogeneity of rock material,rock specimens of the same diameter but of different lengths were carried out to simulate numerically under uniaxial compression by Rock Failure Process Analysis(RFPA2D) code,and numerical simulation results reached good agreements with experimental results.The length effect of rock strength results in the friction effect of end faces,not the heterogeneity of rock material.
- size effect /
- heterogeneity /
- rock strength /
- numerical simulation