Simulation of a two-slope pyramid made by SPIF using an adaptive remeshing method with solid-shell finite element

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• 作者：J. I. V. de Sena ; C. F. Guzmán ; L. Duchêne…
• 刊名：International Journal of Material Forming
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：9
• 期：3
• 页码：383-394
• 全文大小：3,311 KB
• 刊物类别：Engineering
• 刊物主题：Operating Procedures and Materials Treatment
  Materials Science
  Manufacturing, Machines and Tools
  Mechanical Engineering
  Numerical and Computational Methods in Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer Paris
• ISSN：1960-6214
• 卷排序：9

文摘

Single point incremental forming (SPIF) is an emerging application in sheet metal prototyping and small batch production, which enables dieless production of sheet metal parts. This research area has grown in the last years, both experimentally and numerically. However, numerical investigations into SPIF process need further improvement to predict the formed shape correctly and faster than current approaches. The current work aims the use of an adaptive remeshing technique, originally developed for shell and later extended to 3D “brick” elements, leading to a Reduced Enhanced Solid-Shell formulation. The CPU time reduction is a demanded request to perform the numerical simulations. A two-slope pyramid shape is used to carry out the numerical simulation and modelling. Its geometric difficulty on the numerical shape prediction and the through thickness stress behaviour are the main analysis targets in the present work. This work confirmed a significant CPU time reduction and an acceptable shape prediction accuracy using an adaptive remeshing method combined with the selected solid-shell element. The stress distribution in thickness direction revealed the occurrence of bending/unbending plus stretching and plastic deformation in regions far from the local deformation in the tool vicinity.KeywordsAdaptive remeshingSolid shell finite elementSingle point incremental forming