3D-FE study on deformation behaviors in cold pilgering of high strength TA18 titanium alloy tube

Heng Li, Kaipeng Shi, He Yang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Regarding stress/strain changing tendencies and material flow trajectories, the deformation behaviors of high strength TA18 titanium alloy tube in whole tube cold pilgering are numerically studied. Under ABAQUS/Explicit platform, 3D elastic-plastic FE model is established and validated by the law of energy conservation. Key modeling technologies are solved, such as geometry definition of variable cross-section rollers and parabola-shape mandrel, coordinate movement of tools and elimination of excessively distorted meshes. The main results show that: 1) During the whole process, 3D stresses fluctuate between tension and compression. In the instantaneous deformation zone, radial stress keeps constant along thickness. In the roller flange area, hoop and axial stresses on inner surface are larger than which on outside surface, while opposite in the roller groove bottom. (2) During the whole tube cold pilgering, Compressive radial and hoop strains decrease while tensile axial strain increases. In the instantaneous deformation zone, hoop strain keeps constant along thickness, while radial and axial strains on inner surface are slightly larger than which on outside surface. 3) With preform tube deformed into final tube, tube materials move forward along the helix trajectories, and it can be concluded that tube elongation increases linearly.
Original languageEnglish
Title of host publication11th International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM 2013
Pages311-316
Number of pages6
Volume1532
DOIs
Publication statusPublished - 7 Jun 2013
Externally publishedYes
Event11th International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM 2013 - Shenyang, China
Duration: 6 Jul 201310 Jul 2013

Conference

Conference11th International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM 2013
Country/TerritoryChina
CityShenyang
Period6/07/1310/07/13

Keywords

  • Cold Pilgering
  • Deformation Behaviors
  • FEM
  • High Strength Titanium Tube

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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