In this paper, a novel hybrid FEM and Peridynamic modeling approach proposed in Ni et al. (2020) is used to predict the dynamic solution of hydro-mechanical coupled problems. A modified staggered solution algorithm is adopted to solve the coupled system. A one-dimensional dynamic consolidation problem is solved first to validate the hybrid modeling approach, and both $\delta$-convergence and $m_r$-convergence studies are carried out to determine appropriate discretization parameters for the hybrid model. Thereafter, dynamic fracturing in a rectangular dry/fully saturated structure with a central initial crack is simulated both under mechanical loading and fluid-driven conditions. In the mechanical loading fracture case, fixed surface pressure is applied on the upper and lower surfaces of the initial crack near the central position to force its opening. In the fluid-driven fracture case, the fluid injection is operated at the centre of the initial crack with a fixed rate. Under the action of the applied external force and fluid injection, forerunning fracture behavior is observed both in the dry and saturated conditions.

在本文中，Ni等人提出了一种新颖的混合有限元和围动力建模方法。（2020年）被用来预测水力耦合问题的动态解决方案。采用改进的交错求解算法求解耦合系统。首先解决一维动态合并问题以验证混合建模方法，并且两者都$\delta$-收敛和 ${米}_{\mathrm{[R}}$进行了收敛研究，以确定混合模型的适当离散化参数。此后，在机械载荷和流体驱动条件下，都模拟了具有中心初始裂纹的矩形干燥/完全饱和结构中的动态压裂。在机械载荷断裂的情况下，在初始裂纹的中心位置附近的上下表面上施加固定的表面压力以迫使其打开。在流体驱动的断裂情况下，流体注入以固定的速率在初始裂缝的中心进行。在施加的外力和流体注入的作用下，在干燥和饱和条件下均观察到超前的断裂行为。