New Algorithm SGD of Surface Modification and Its Application in Springback Compensation

Abstract

Abstract:

The SGD algorithm was presented and applied to the modification of surface in springback compensation.The surface was globally modified based on the original surface.The topology consistency of surface before and after mdification can be ensured and the high-quality and smooth surface was obtained.It is proved to be reasonable in practice and the result indicates that the time and cost can be saved. 

Key words: SGD(shape global deformation) algorithm, springback compensation, surface modification, topology

摘要：

提出了SGD(shape global deformation)算法并将其应用于回弹补偿分析中，进行补偿面的修改。其原理是以原始曲面为基础进行的曲面整体变形修改，这种方法能够保证变形前后的型面整体拓扑关系的一致性，保证曲面的质量、光顺程度，以便获得更精确的回弹补偿型面。经多个实例分析表明，该算法能够在很大程度上节省修改补偿型面的时间和精力，较大地提高曲面精度，回弹补偿更加准确。

关键词: SGD算法, 回弹补偿, 型面修改, 拓扑关系 

CLC Number:

TG386.1

Nie Xin, Cheng Aiguo, Shen Danfeng, Zhong Zhihua. New Algorithm SGD of Surface Modification and Its Application in Springback Compensation[J]. China Mechanical Engineering, 2008, 19(24): 2972-2976.

聂昕, 成艾国, 申丹凤, 钟志华, . 型面修改的新算法SGD及其在回弹补偿中的应用[J]. 中国机械工程, 2008, 19(24): 2972-2976.

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New Algorithm SGD of Surface Modification and Its Application in Springback Compensation

型面修改的新算法SGD及其在回弹补偿中的应用

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