基于PhysX物理引擎的刚体破碎特效仿真

Rigid body fracturing simulation based on PhysX physics engine

鉴于刚体破碎特效仿真方法中存在的不足,提出了一种预破碎物理方法进行刚体破碎特效仿真。预先构建破碎模型,将几何模型剖分为若干碎块,物理环境下物理引擎将破碎模型创建为动态刚体。受力后碎块分离出来,以牛顿第二定律为理论基础,碎块进行相应的运动,实现了完整的刚体破碎特效仿真。实验结果表明,该方法既满足了效果的真实感又达到了实时性,仿真结果应用于钻井中地层岩石在钻头作用力下的破碎效果,提取了相应参数,完成了不同参数调控下的破碎效果展示。

In view of some shortcomings in the method of rigid body fracturing simulation, a pre-fracturing physics method is proposed. Fracturing model will be constructed in advance, which is devided into several fragments, to he created as a dynamic rigid body by the physics engine in the physical evironment. Fragments are seperated from the model by force, doing the corresponding movement under the Newtoffs second law, so that the whole rigid body fracturing simulation will be completed. Experiment shows that this method meets both the realistic effect and the real-time simulation. The result is used for the rock which is forced by drill, and corresponding parameters are extracted, in order to show the fracturing effect under the control of different parameters.