Automatic topology generation algorithm for hybrid surface models
Cao Bing-wa · Journal of Zhejiang University(Engineering Science) · 2014
An enhanced boundary representation(B-rep)that combines the continuous and discrete surface representations was proposed to exploit the strengths of both representations,which enables a novel automatic topology repairing algorithm for continuous surfaces with small gaps and overlaps on surface boundaries.The proposed algorithm first repairs the discrete dual of the input continuous model,and then rebuilds the lost B-rep topologies of the continuous model based on the dual relation of the discrete and continuous models.After topology repairing,the existing surface defeaturing and meshing algorithms that require a valid B-rep input are reused.In all of these steps,geometry computations mainly occur on the discrete model.More importantly,the geometry of the continuous model remains unchanged from the very beginning,and the output surface mesh is loyal to the continuous model.Therefore,this outcome is desired by the applications such as computational fluid dynamics(CFD)where a mesh model with high geometrical fidelity is preferred.