Based Physics And Computer Graphics Simulation Of Deformation And Fracture

Virtual sense of reality based on physical properties is a hot direction of researching in computer graphics. It can provide better simulated experiences for users; even can develop the plot of simulated environment. On the one hand it is applied widely in high quality filmmaking and game making, on the other hand it is developed into one important technique in interactive simulated environment in order to discard the stereotyped off-line animation and improve the simulated experiences. However, it makes virtual realistic sense simulation which is completely agreed with physical laws impossible because of the complexity of physical properties and numerical calculation. So it is the main method to construct the vision sense of reality that uses computer graphics knowledge partly conjunct with equations based on physical laws. This paper aims to establish simulated system of physical virtual sense for three-dimension body by seeking for the tradeoff between realistic senses and performance.This paper's researching mainly is composed by three modules, include real-time collision detection, simplified mechanics of rigid body, and linear elastic deformation and fracture by finite element method solution. Real-time collision detection module is the essential prepare for the later modules, it decides the boundary or initial condition of the later equations. Simplified mechanics of rigid body module mainly uses several constraint equations which are abstracted from the process of rigid body contacts to enhance the calculation efficiency. Linear elastic deformation and fracture module, which makes the use of the finite element calculation method often used by engineering calculation, and associates the algorithm to simplify and split the three dimension mesh, completes the physical realistic sense simulation. This paper makes a good attempt at the physical realistic sense simulation work in future.