首页> 外文期刊>Transactions of the Indian Institute of Metals >Enhancement of Process Capabilities and Numerical Prediction of Geometric Profiles and Global Springback in Incrementally Formed AA 1050 Sheets
【24h】

Enhancement of Process Capabilities and Numerical Prediction of Geometric Profiles and Global Springback in Incrementally Formed AA 1050 Sheets

机译:增强过程能力和几何简档的数值预测和逐步形成的AA 1050张的全局回弹

获取原文
获取原文并翻译 | 示例
           

摘要

In single point incremental forming (SPIF) process, parts suffer from dimensional inaccuracy and limited formability, mainly, due to occurrence of springback and abrupt fracture, respectively. Orientation imaging microscopy of the original AA1050 sheet revealed dislocated and distorted microstructure and texture in comparison to the same sheet preheated at different temperatures. The objective of this work is to investigate formability and geometrical accuracy due to variations in microstructure and texture of the sheet and to propose a methodology, which can predict the geometric profiles and springback effect at different preheating temperatures. The work reports enhanced formability and geometrical accuracy of parts formed by SPIF, owing to the reformation of grain structure due to preheating. However, preheating at higher temperatures, i.e., 330 and 500?°C deteriorated the surface quality, as homogenization of grain orientation led to orange peel effect. The proposed methodology, based on reverse engineering and numerical formulation, is capable of predicting two-dimensional cone and pyramid profiles as well as global spring back values associated with different preheating temperatures. The results predicted by proposed method were validated by experiments and could be implemented to enhance the accuracy of SPIF process.
机译:在单点增量成型(SPIF)过程中,零件患有尺寸不准确和可比性,主要是由于回弹和突然骨折的发生。与在不同温度下预热的相同板相比,原始AA1050片材的取向成像显微镜显微镜显示出脱位和变形的微观结构和纹理。这项工作的目的是研究由于片材的微观结构和纹理的变化和提出一种方法的可成形性和几何精度,并提出可以预测在不同预热温度下的几何谱和回弹效果。由于预热导致的晶粒结构的改造,该工作报告了SPIF形成的零件的成形性和几何精度。然而,在较高温度下预热,即330和500?°C劣化的表面质量,因为晶粒取向的均匀化导致橙皮效果。基于逆向工程和数值制剂的提出方法能够预测二维锥形和金字塔型材以及与不同预热温度相关的全局弹簧背部值。通过实验验证了所提出的方法预测的结果,可以实施,以提高SPIF工艺的准确性。

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