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Numerical investigation on plastic forming for heat transfer tube consisting of both dimples and protrusions

  • Zheng Liang
  • Shuai XieEmail author
  • Jie Zhang
  • Liang Zhang
  • Yulin Wang
  • Hu Ding
ORIGINAL ARTICLE
  • 8 Downloads

Abstract

In this paper, a new method and manufacture apparatus for producing enhanced tube with dimples and protrusions (ETDP) have been proposed for the first time. The main objective of the present work is to investigate the mechanical responses of the smooth tube in extruding process. Additionally, the effects of extrusion depth, extrusion spacing, teeth radius, and tube wall thickness on deformation, stress, plastic strain, and extrusion force of ETDP were also investigated. From this investigation, it found that the dimples formed due to the smooth tube protruded, and protrusions formed due to the smooth tube dented. The maximum deformation, stress, and plastic strain at protrusion regions are larger than dimples. Among the investigated different extruding parameters, it found that the stress, deformation, and plastic strain increase with the increasing of D and δ. However, it increases with the decreases of extrusion P. In addition, R has no obvious effect on mechanical behavior of ETDP at current arrangement. The results can help to understand the forming process parameters and improve the forming quality.

Keywords

Heat transfer tube Dimple/protrusion Plastic forming Heat transfer enhancement 

Notes

Funding information

This research work was supported by the Graduate Innovation Foundation of School of Mechatronic Engineering of SWPU (CX2014SY30) and Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education of China (201704-404).

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Mechatronic EngineeringSouthwest Petroleum UniversityChengduPeople’s Republic of China
  2. 2.Sichuan Chuanguo Ketaida Energy Technology Co., Ltd.ChengduPeople’s Republic of China
  3. 3.Chengdu Chen Hang Fa Technology Co., Ltd.ChengduPeople’s Republic of China

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