首页> 外文学位 >Experimental and numerical investigations of stamp hydroforming and ironing of wrinkling in sheet metal forming.
【24h】

Experimental and numerical investigations of stamp hydroforming and ironing of wrinkling in sheet metal forming.

机译:钣金成型中冲压液压成形和起皱熨烫的实验和数值研究。

获取原文
获取原文并翻译 | 示例

摘要

The goal of this study was to verify, experimentally and numerically, that the stamp hydroforming process is a suitable alternative to conventional stamping as a means for producing defect-free sheet metal parts. The pressurized fluid used in stamp hydroforming is shown to have the effect of increasing the forming limits of materials; that is deeper drawing depths are achieved without rupture. Also, using a specific pressure profile, wrinkle-free parts with deeper draws could be produced. Stamp hydroforming involves supporting the sheet metal with a bed of pressurized viscous fluid during the entire forming process. The external support provides a through-thickness compressive stress that delays the onset of tearing and wrinkling. Stamp hydroforming experiments with a hemispherical punch were conducted using the Interlaken double-action stamping press. Numerical analysis was conducted using the explicit finite element code LS-Dyna3D. The accuracy of the numerical model was first established and fine-tuned using experimental data. The numerical model was then used to explore new forming ideas not currently possible with the present experimental setup. A new blank holder design is suggested from these numerical results.
机译:这项研究的目的是通过实验和数值验证,压模液压成形工艺可以替代常规冲压,作为生产无缺陷钣金零件的手段。冲压液压成形中使用的加压流体被证明具有增加材料成形极限的作用;即可以实现更深的拉伸深度而不会破裂。同样,使用特定的压力曲线,可以生产出具有更深拉伸度的无皱纹部件。冲压液压成形包括在整个成形过程中用加压粘性流体床支撑金属板。外部支撑提供了整个厚度的压应力,从而延迟了撕裂和起皱的开始。使用Interlaken双作用冲压机进行半球形冲头的冲压液压成型实验。使用显式有限元代码LS-Dyna3D进行了数值分析。首先建立数值模型的精度,并使用实验数据对其进行微调。然后使用数值模型来探索当前实验设置目前尚无法实现的新成形思想。根据这些数值结果,提出了一种新的毛坯夹持器设计。

著录项

  • 作者

    Abedrabbo, Nader Elias.;

  • 作者单位

    Michigan State University.;

  • 授予单位 Michigan State University.;
  • 学科 Engineering Automotive.; Engineering Materials Science.; Engineering Metallurgy.
  • 学位 M.S.
  • 年度 2002
  • 页码 92 p.
  • 总页数 92
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自动化技术及设备;工程材料学;冶金工业;
  • 关键词

  • 入库时间 2022-08-17 11:46:15

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号