Splitting is an important step in solid modeling

and boundary problems are main factors to influence the efficiency and the robustness of splitting algorithms. Quadric surfaces are commonly used in engineering

and their intersecting curves are often degenerated or self-intersected which bringing difficulties for the topological representation and solid' s reconstruction. In addition

boundary overlapping is another problem in solid splitting. Based on geometric representations of quadric surfaces

In this paper

we develop a reasonable strategy for solid splitting

present an effective splitting algorithm considering their intersection curve' s characteristics

and boundary overlapping problems are also be successfully resolved.