Simulation Of Catastrophic Process Of Hydraulic Engineering Structure

The catastrophe of the structure of the water conservancy project seriously affects the human life and crisis human security.Simulation of the process of catastrophe is conducive to improving the level of disaster prevention and mitigation.In this paper,the catastrophic simulation of hydraulic engineering structure is carried out,and a pre-crushing model combined with PhysX physics simulation engine technology is used to simulate the damage process of water conservancy project structure.The simulation of the ShuangJi River aqueduct in the middle route of South-to-North Water Diversion Project is carried out.The main work is as follows:1.In order to improve the real-time performance of the Voronoi diagram,the Voronoi vertices are generated using the geometric modeling method,and the Voronoi polygons are generated by the Graham convex hull algorithm.In order to make the Voronoi diagram more consistent The shape of the object after the broken,the use of multi-level randomly generated seed point method.This method of grid segmentation before the model is broken,greatly reducing the physical calculation and improving the simulation efficiency.2.Crushing dynamics simulation: A technique based on Voronoi diagram modeling method was designed using PhysX physics engine.The AABB bounding box algorithm is used to detect the collision,and the motion of the subblock after the collision is simulated.When the object is hit,the AABB bounding box algorithm is used to simulate the collision.This method can improve the simulation realism under the premise of satisfying certain real-time requirements.3.Fluid simulation: The particle model of the fluid is generated by the Smoothed Particle Hydrodynamics,which simulates the collision and interaction between the fluid and the aqueduct by setting the physical properties of the particles;In order to increase the realism of the fluid,in the 3ds MAX using V-Ray renderer rendering,the water given to the water material,to simulate a more real flow.