Abstract: For the limit of the software and hardware of the visualization system, it is a challenge to interactive render of the massive simulation result data of complex mechanical products. A new algorithm for simplifying CAE meshes with physical property is presented. A new vertex importance based on physical property is introduced, and it is added into the quadric error metric of each vertex. Simultaneously, the total physical property is distributed to every vertex of the triangle meshes. The physical gradient of each vertex is calculated, and it is added into the cost of contracting pair of the quadric error metric based simplification algorithm. Iterative remove the edge pair and merge the distributed total physical property of the edge pair into one, a progressive CAE meshes are generated. The empirical results show that the proposed algorithm is able to retain the area with maximum and minimum physical property, to maintain the physical property tendency of the original model, and also to ensure that the total physical property to be the same during simplifying.

Key words: CAE meshes, Mesh simplification, Physical gradient, Progressive meshes