强冲击荷载下岩石破坏三维数值模拟THREE-DIMENSIONAL NUMERICAL SIMULATION OF ROCK FAILURE IN STRONG IMPACT LOADING
张华,陈龙伟,李刚,汪旭光
ZHANG Hua1,CHEN Long-wei1,2,LI Gang1
摘要(Abstract)：
采用基于有限差分的拉格朗日、欧拉相结合的方法,对强荷载冲击下岩石材料破坏进行了数值模拟。在欧拉步中引入模糊方法处理界面,考虑了岩石材料、金属材料、空气的多物质场,给出了模拟结果和几个关键点的压力曲线。对强冲击荷载下岩石破坏研究具有重要的意义。
Numerical simulation of rock failure in strong impact loading was researched based on finite differential scheme combined Lagrangian-Eulerian method.With the consideration of rock materials,metal materials,and material field of air,the materials interface was processed by an Eulerian fuzzy method.The simulation result and some key points of pressure curves were given,which had important significances to study the rock failure in strong impact loading.
关键词(KeyWords)：
强冲击荷载;岩石破坏;数值模拟
Strong impact loading;Rock failure;Numerical simulation
基金项目(Foundation): 国家自然科学基金(50674049);; 云南省自然科学基金(2007D190M);; 云南省教育厅基金(07C10305)联合资助
作者(Author):
张华,陈龙伟,李刚,汪旭光
ZHANG Hua1,CHEN Long-wei1,2,LI Gang1
参考文献(References)：
- [1]高文学.岩石动态响应特征及损伤模型研究(博士学位论文)[D].北京:北京理工大学.1999.
- [2]张华.冲击荷载作用下岩石动态损伤特性研究(博士学位论文)[D].昆明:昆明理工大学.2009.
- [3]恽寿榕,涂侯杰,梁德寿,等.爆炸力学计算方法[M].北京:北京理工大学出版社,1995.
- [4]隋树元,王树山.终点效应学(Terminal Effects)[M].北京:国防工业出版社,2000,196-278.
- [5]李德元,徐国荣,水鸿寿,等.二维非定常流体力学数值方法[M].北京:科学出版社,1998.
- [6]Courant R,Friedrichs K O,Lewy H.Mathematics An-nalen[M].1928.
- [7]陈龙伟,宁建国.聚能射流三维数值模拟[J].计算力学学报,2005,1:55-58.
- [8]宁建国,陈龙伟.Euler方法中的模糊界面处理[J].中国科学E辑,2004,7:776-792.
- [9]陈龙伟.三维弹塑性流体动力学多介质界面处理及数值模拟(博士学位论文)[D].北京:北京理工大学,2003.
- [10]Hol mquist T J,Johnson G R.A Computational Con-stitutive Model for Concrete Subjected to LargerStrains,High Strain Rates and High Pressure[A].14th International Symposium Ballistics[C],USA:A-merican Defense Prepareness Association,1995,591-600.
- [11]Rajendran A M,Grove DJ.Computational Modeling ofShock and I mpact Response of Alumina[J].CMES,2002,3(3):367-380.