• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.2; 20051026-28; Nanjing(CN) >Springback Analysis of Pure Bending for Tailor Welded Bland with Exponential Harding and Elastic-plasticity
【24h】

Springback Analysis of Pure Bending for Tailor Welded Bland with Exponential Harding and Elastic-plasticity

机译：具有指数硬化和弹塑性的量身定做的焊缝纯弯曲的回弹分析

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Compared to ordinary metal blanks, the prediction and control of springback are more difficult because of the difference of strength and thickness for two base blank of tailor welded blanks (TWBs), weld line and weld stress, the movement of weld line in forming. Based on the simulation and experiment, the springback expressions of TWBs was deduced for the bending of TWBs which the centre lines of two base blanks are coincident and the weld line is longitudinal. The deduction considered the exponential harden characteristics of material, the movement of neutral layer. According to the expressions, the value of springback is calculated and verified by free bending experiment, which results show that there are good correlation between the experiment and theory. Based on the simulation and experiment, the concept of relative bending radius of TWBs is put forward and it reflects the influence of the curvature and the thickness to springback of TWBs to some extent. Furthermore, the springback of TWBs with longitudinal welding-line was investigated for the free bending of U-shaped part by simulations and experiments in which the specimens were welded by laser. There are three different width of 30mm/40mm/60mm, and two thickness of 0.8mm/1.5mm for TWBs. The results indicate that welding zone's influence on springback becomes weaker when the width is big enough, and that the difference of the springback between TWBs and blank is mainly because of thickness difference of the two base metals of TWBs. The influence tendency of tools gap, stroke distance, pad and punch profile radius on the springback of TWBs is similar to that of blank.
机译：与普通金属毛坯相比，回弹的预测和控制更加困难，因为定制焊接毛坯（TWB）的两个基础毛坯的强度和厚度，焊接线和焊接应力以及成形过程中焊接线的移动都不同。在仿真和实验的基础上，推导了两个基坯的中心线重合，焊缝纵向的TWB弯曲的回弹表达式。推论考虑了材料的指数硬化特性，中性层的运动。根据表达式，通过自由弯曲试验计算并验证了回弹值，结果表明该试验与理论值具有良好的相关性。在仿真和实验的基础上，提出了TWB的相对弯曲半径的概念，并在一定程度上反映了曲率和厚度对TWB回弹的影响。此外，通过模拟和试验研究了用激光焊接试样的过程，研究了带有纵向焊接线的TWB板的回弹对U形零件的自由弯曲的影响。 TWB有三种不同的宽度30mm / 40mm / 60mm，两种厚度0.8mm / 1.5mm。结果表明，当焊缝宽度足够大时，焊接区对回弹的影响变弱，而TWB与毛坯之间回弹的差异主要是由于TWB的两种母材的厚度差异所致。刀具间隙，行程距离，垫块和冲头轮廓半径对TWBs回弹的影响趋势与毛坯相似。

著录项

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