In the field of industrial design, to meet the needs of Simulation Driven Design (SDD), extracting useful information from mesh model becomes an important step in the design process. This paper presents an approach for breaking and splitting plate mesh model into three part of top surface, undersurface and side surface. We present three basic methods for detecting top surface; undersurface and side surface, and then propose and algorithm for splitting plate mesh model by using the three basic detecting methods. And the test result shows that the algorithm works well.
