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Research on AHSS Deforming Compensation Method Based-on Springback Curve

Author: ZhuJianJun
Tutor: YangYanPing；ZhangHuaPing
School: Hunan University
Course: Vehicle Engineering
Keywords: AHSS Rebound Springback compensation Rebound curve
CLC: U465.11
Type: Master's thesis
Year: 2010
Downloads: 106
Quote: 0
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Abstract


In recent years, the car with the social security of energy conservation and the growing importance of advanced high-strength steels (AHSS) more widely applied to the vehicle body . The tensile strength of advanced high-strength steel is much higher than ordinary steel , sheet metal forming springback more serious , as a constraint to the application of advanced high strength steel important factor . The traditional methods, such as process control method, cornering method and calibration pressure method , etc., have been far from solving the problem of advanced high strength steel rebound , based on field trial and error compensation method in the treatment of advanced high strength steel forming and springback question also inadequate, therefore , an urgent need to develop new compensation method for forming . This paper reviews and summarizes the current compensation method commonly used in sheet metal forming , to discuss a series of parts , rebound rebound curve and the optimal curve concept , the use of optimal Rebound Rebound curves were divided coordinate plane curve analyzes process control Law and compensation Act scope and conditions discussed compensation with the rebound curve forming the direct method and the iterative method, with a V-shaped piece of CAE simulation study rebound curve data production and direct compensation process , and finally on CAE simulation and rapid tooling iterative curve springback compensation method to solve the Changfeng Motor CP2 high strength steel DOCOL800DP forming compensation issues. This paper discusses the rebound curve based on an advanced high-strength steel forming compensation method is based on test data series parts , mold CAE simulation debugging data or data based on a method that is both a site of trial and error repair mode a way to improve , not directly dependent on the CAE springback prediction accuracy. Looking at the results from the study , rebound curve reflects a series of parts of the rebound trend , with the rebound trend estimate springback compensation amount , only to overcome the over-reliance on the scene of trial and error experience , but also is a direct CAE accurate springback prediction an improved low , has some theoretical significance and practical value.

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive Materials > Ferrous metals > Steel, alloy steel
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