A Framework for Cad Modeling of Heterogeneous Objects

The conventional CAD modeling approaches only provide geometry and topology of the object but do not contain any information with regard to the materials of the object and so can not be used for the fabrication of heterogeneous objects (HO) through rapid prototyping. A CAD modeling approach using voxelization based material model is represented for the fabrication of HO with simple object geometries and complex material variations. In this framework, volumetric dataset is employed to represent the material variations, which helps in flexible manipulability to HO representation, while geometry model is used to describe the shape of an object, which guarantees the accuracy of fabricated heterogeneous objects. The relation between basic requirements along with respective solutions for a standard CAD modeling approach is established. Further a framework for developing the required CAD model for rapid prototype (RP) machines to fabricate heterogeneous objects is designed.