RFPA实验报告.doc

不同压拉比条件下岩石力学性质影响的数值加载试验
（numerical loading test of rabbi affect rock mechanics properties under the condition of different pressure）
试验目的（Trial objective）
研究不同压拉比对岩石力学性质的影响
The effect of different pressure rabbi on rock mechanics properties
试验条件
试样尺寸（the size of test sample）：100mm*50mm
基元数the number of element: 100*50
应力分析模式the style of stress analysis: plane stress analysis
加载方式loading regime：uniaxial compression
加载条件types of loading.：to control displacement increment
加载量heapedcapacity:0.005mm one step
试验内容 the content of test
在λ=1的情况下

第25步时破坏点开始出现 33步时出现裂缝

40步完全破坏 应力应变曲线stress-strain curve

Through experiment, we found that compressive strength of the sample is 2238.702881MPa.
在λ=3况下

Step19 Step 32

Step33 Step 50

stress-strain curve
Step 19,sample started to damage. With load continuing,sample , crack formatted and developed until 50 th step.
Through experiment, we found that compressive strength of the sample is 1894.037354.
在λ=5的情况下

Step 14 Step 30

Step 36 Step50

stress-strain curve

Step 14,sample started to damage. With load continuing,sample , crack formatted and developed until 36 th step.
we found that compressive strength of the sample is 1534.242920
MPa
λ=11

Step 12 Step 18

Step 19 Step 22

Step 25 stress-strain curve
Step 12,sample started to damage. With load continuing,sample , crack formatted and developed until 25 th step.
we found that compressive strength of the sample is 1252.994263
MPa
λ=13

Step 10 Step17 Step18

stress-strain curve
Step 10,sample started to damage. With load continuing,sample , crack formatted and developed until 18 th step.
we found that compressive strength of the sample is 1319.290649
MPa.