Method for predicting space envelope forming precision of high-rib thin-wall component

Abstract

The invention relates to a method for predicting the space envelope forming precision of a high-rib thin-wall component. The method comprises the following steps: S1, a finite element prediction model for the space envelope forming precision of the high-rib thin-wall component is established; S2, the space envelope forming shape deviation of the high-rib thin-wall component is determined; s3, the space envelope forming size deviation of the high-rib thin-wall component is determined; and S4, the space envelope forming geometric deviation of the high-rib thin-wall component is determined. According to the method for predicting the space envelope forming precision of the high-rib thin-wall component, the space envelope forming precision of the high-rib thin-wall component under thermal-mechanical coupling and multi-deformation zone coordination can be accurately predicted, and a foundation is laid for precise forming of the high-rib thin-wall component.

Description

technical field [0001] The invention relates to the technical field of forming and manufacturing of high-rib and thin-walled components, and more specifically, to a method for predicting the accuracy of space envelope forming of high-rib and thin-walled components. Background technique [0002] In order to improve the lightweight level of aerospace equipment, a thin-walled member with multiple vertical and horizontal ribs distributed on a thin-walled plate is widely used in aerospace equipment, such as rocket cabins, fuel storage tanks, aircraft wings, etc. It is a high-reinforced thin-walled member. High-reinforced thin-walled components have geometric characteristics such as large wall area, thin thickness, high and narrow ribs, etc., which significantly increase the difficulty of forming and manufacturing such components. At present, high-reinforced thin-walled components are mainly manufactured by milling, welding, riveting and other processes, which not only have low m...

AI Technical Summary

Problems solved by technology

Under complex and uneven deformation conditions, the elastic deformation and thermal expansion deformation of the enveloping mold, the springback deformation and cooling shrinkage deformation of the forging after demoulding are all very uneven, making it very difficult to predict the accuracy of the space envelope forming of high-reinforced and thin-walled components

At present, there is no relevant report on the accuracy prediction method of space envelope forming of high-reinforced and thin-walled components

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