A New Definition of the Dual Interpolation Curve for CAD Modeling and Geometry Defeaturing

The present paper provides a new definition of the dual interpolation curve in geometric-intuitive way based on adaptive refinement techniques. is an implementation interpolatory subdivision scheme for modeling, which comprises polynomial segments different degrees. Dual curves maintain various desirable properties conventional modeling methods, such as local subdivision, high accuracy and convergence, continuous discontinuous boundary representation. In addition, mainly applied to solve difficult geometry defeaturing problems existing computer-aided technology. By adding fictitious intrinsic nodes inside or at vertices elements, flexible convenient characterizing set ordered points discrete segments. Combined with Lagrange meshless method, proposed approach capable non-smooth defeaturing. Experimental results are given verify validity, robustness, method.