Method and system for automatically generating uncoiling profile curve of large-scale water conservancy special-shaped gradually-changing steel pipe

Abstract

This invention relates to the field of manufacturing large-scale hydraulic engineering irregular-shaped gradient steel pipes, and discloses a method and system for automatically generating the unfolded blanking contour curve of large-scale hydraulic engineering irregular-shaped gradient steel pipes. The method includes: acquiring and discretizing an initial design model; extracting shape operator tensors and binding them to a topological feature set; performing curvature-wall-thickness coupling analytical calculation of the neutral layer offset; translating to generate a feature compensation mesh and extracting the unfolding constraint set; constructing a two-dimensional coordinate system and performing dimensionality reduction and tiling iteration based on the initial coordinate set of the generatrix; determining the two-dimensional coordinates by minimizing the global energy penalty function; and generating the blanking contour curve through smooth curve fitting. This invention solves the problems of geometric interference and accuracy distortion in thick plate forming, achieves accurate restoration of the physical neutral layer and eliminates the need for secondary fitting, and improves the manufacturing accuracy and efficiency of large-scale hydraulic engineering components.

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