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首页> 外文期刊>Optics and Lasers in Engineering >Springback control in sheet metal bending by laser-assisted bending: Experimental analysis, empirical and neural network modelling
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Springback control in sheet metal bending by laser-assisted bending: Experimental analysis, empirical and neural network modelling

机译：激光辅助弯曲在钣金弯曲中的回弹控制：实验分析，经验和神经网络建模

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摘要

The present investigation deals with the control of springback phenomena in the bending process of aluminium sheets by hybrid forming process. Metal substrates were pre-bent to nominal shapes on a built-ad-hoc mould after being constrained on it. Then, they were post-treated by high power diode laser to prevent the deformation of the pre-bent sheets after the release of the constraints. The extent of springback phenomena were estimated by measuring the difference between the nominal bending angles and those achieved on the unconstrained substrates after laser post-treatments. Analytical models, aimed at predicting the springback by varying the setting of the operational parameters of the forming process, were developed. Neural network solutions were also proposed to improve the matching between experimental and numerical data, with the Multi-Layer Perceptrons trained by Back-Propagation algorithm being the fittest one. On this basis, a control modulus very useful to practitioners for automation and simulation purposes was built-on.
机译：本研究致力于通过混合成型工艺控制铝板弯曲过程中的回弹现象。将金属基材约束在专用模具上后，将其预先弯曲成名义形状。然后，将它们用大功率二极管激光器进行后处理，以防止约束解除后预弯曲板的变形。回弹现象的程度是通过测量标称弯曲角度与在激光后处理之后在不受约束的基板上获得的弯曲角度之间的差来估计的。开发了旨在通过改变成形工艺的操作参数设置来预测回弹的分析模型。还提出了一种神经网络解决方案，以改善实验数据与数值数据之间的匹配性，以反向传播算法训练的多层感知器为最合适的解决方案。在此基础上，建立了对从业人员非常有用的用于控制自动化和仿真的控制模量。

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  • 来源
    《Optics and Lasers in Engineering》 |2011年第12期|p.1372-1383|共12页
  • 作者

    A. Gisario; M. Barletta; C. Conti; S. Guarino;

  • 作者单位

    Dipartimento di Meccanica ed Aerospaziale, 'La Sapienza' Universita degli Studi di Roma, Via Eudossiana, 18 - 00184 Roma, Italy;

    Dipartimento di Ingegneria Meccanica, Universita degli Studi di Roma Tor Vergata, Via del Politecnico, 1 - 00133 Roma, Italy;

    Dipartimento di Ingegneria Meccanica, Universita degli Studi di Roma Tor Vergata, Via del Politecnico, 1 - 00133 Roma, Italy;

    Dipartimento di Ingegneria Meccanica, Universita degli Studi di Roma Tor Vergata, Via del Politecnico, 1 - 00133 Roma, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    neural network; modelling; springback; bending; laser;

    机译：神经网络;造型;弹回;弯曲;激光;

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