【摘要】 根据连续介质力学和有限元理论 ,给出了高压水射流破岩系统中流体和岩石的控制方程 ,并建立了相应的有限元列式。采用交错迭代的解耦方法求解了水射流与岩石的耦合问题 ,并就非线性动力有限元数值计算中应注意的问题进行了讨论。数值计算的结果较真实地反映了水射流破岩过程中岩石的动态响应以及水射流动力学特性的演化过程 ,并与相关试验规律吻合良好 ,这表明该分析方法是有效的 ,可用来指导高压水射流破岩理论的进一步研究及应用。更多还原

【Abstract】 Based on the continuous mechanics and the finite element method (FEM), several control equations were established, and the finite element formulations and discretionary equations for water jet breaking rock were given. An alternate iterative algorithm was used to analyze the coupling of rock and water. Some problems about dynamic nonlinear FEM were discussed. The numerical results of water jet breaking rock agree with the experimental conclusion. A valid approach to the process of water jet breaking rock shows that FEM analysis is very important for deep study on the high pressure water jet breaking rock.更多还原