Springback compensation method for creep age forming

A technology of creep aging forming and springback compensation, which is applied in special data processing applications, instruments, electrical digital data processing, etc. It can solve the problems of time-consuming calculation, many iterations of springback compensation, and low compensation accuracy, so as to improve compensation Efficiency, reduced compensation time, and high surface accuracy
CN108920847AInactive Publication Date: 2018-11-30CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2018-11-30
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides a springback compensation method for creep age forming. The method comprises the following steps: Step S100, based on MSC.MARC commercial finite element software, constructing creep age forming finite element simulation; Step S200, weighting a springback iterative compensation process based on a molding surface of a finite element simulation result; and Step S300, considering a reverse compensation process of high temperature molding surface thermal expansion effect. The method considers the influence of the strength of a component on surface compensation, the influenceof a component feature structure on surface compensation, and reverse compensation of thermal expansion of a high temperature molding surface. A component formed by the model can still meet the engineering error requirement after being cooled.
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Description

technical field

[0001] The invention relates to the technical field of creep aging precise forming manufacturing, in particular to a springback compensation method for creep aging forming. Background technique

[0002] Creep aging forming technology is a forming method that utilizes the creep characteristics of metals to synchronize forming and aging heat treatment. Creep aging forming is especially suitable for forming large-scale integral components for aerospace. When this technology is used for component forming, it can ensure the synergy between precise forming and high-performance forming properties of components. Creep aging forming technology has the advantages of high forming precision, low forming cost, high repetition rate and low residual stress. However, after the component undergoes creep aging forming, due to the existence of elastic recovery, the material will inevitably spring back.

[0003] In order to eliminate the influence of elastic recovery on compon...

Claims

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