| The topology and shape optimization design technology of continuous structure are adopted as research objective. This paper presents an integrated approach that supports the topology optimization, the shape optimizes, the finite element analysis and the computer-aided design. The optimized design models are constructed. That B-spline curve and curved surface are used to approach continuum structure boundary after topology optimization is researched, which is the way of smoothing boundary. The control point movements of the B-spline curves or surfaces are defined as design variables for shape optimization in shape optimization. The new algorithm of movement velocity field on boundary node is established, which includes the construction theory of boundary movement velocity field, calculation method of boundary movement velocity field and boundary shape adjustment, also model updating theory and boundary shape adjustment, also model updating theory. The design velocity field governs the movement of the structural material points due to design changes. The corresponding algorithm and the computation expression are set up in this paper. Seeking the quick search direction, the shape becomes best by the reasonable velocity distribution. The rationality of the model and the effectiveness of the method are illustrated by example. |