吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (3): 701-707.doi: 10.13229/j.cnki.jdxbgxb201403020

• Orignal Article • Previous Articles     Next Articles

Flexible rolling and stretch forming surface technology and numerical simulation

HU Zhi-qing1,ZHEN Jiao-jiao1,FENG Zeng-ming2,ZHOU Shu-hong2   

  1. 1.Roll Forging Research Institute, Jilin University, Changchun 130022,China;
    2.School of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
  • Received:2013-06-07 Online:2014-03-01 Published:2014-03-01

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Abstract: The principle and characteristics of flexible rolling and stretch forming technology was proposed. A finite element model of spherical parts was built by explicit dynamic analysis. The effects of the thickness, width and properties of the material on the forming quality were discussed. The results indicate that under the condition of the same press displacement of the flexible roller, the compression and tension deformations of the sheets' inner and outer layers are enlarged with the increase in sheet thickness, which makes the plastic strain region increase and the springback decrease. When the width of the sheet increases, the mobility decreases on the middle, and the distribution of plastic deformation becomes inhomogeneous. Compared with 08AL, the equivalent plastic strain value of 2024 aluminum plate is bigger and the springback is smaller. The feasibility and practicability of this technology were proved by tests on an experiment machine, and the simulation results are useful for the practical rolling forming process implementation of sheet metal.

Key words: material synthesis and processing technology, sheet forming, flexible rolling and stretch forming, three-dimensional surface parts

CLC Number: 

  • TG306
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