Analysis of tubes with rectangular section forming process by fluid–solid coupling method
- 1 Downloads
Owing to the advantages of favorable forming stiffness, light weight, and high production efficiency, hydroforming technology has extensive application prospects in the automobile and aerospace fields. This study designs and develops an experimental test system, which continuously injects oil into a quartz tube with favorable transparency, and then captures the flow characteristics of the liquid in the tube in real time using an ultra-high-speed camera. The fluid–solid coupling method of the MSC.Dytran finite element software is used for the experiment. The correctness of the simulation analysis method is verified by comparing the experimental and simulation results. Thus, a hydraulic bulging experiment of 20# steel tube without axial feed and a simulation analysis of the hydraulic bulging process of the rectangular section tube through the fluid–solid coupling method were conducted. A comparison between the experimental and simulation results verified the correctness of the finite element modeling and numerical calculation. In addition, the effects of forming pressure, loading time, and hydraulic loading path on wall thickness change in fillet filling was studied. Results showed that pressure drop exists in the pipe, and the velocity of the fluid changes rapidly with the deformation. The forming pressure clearly influences the forming effect. The maximum thinning rate of the middle section wall thickness initially decreases and then increases given an extended hydraulic loading time. Therefore, the optimal loading time should be determined to achieve the optimal forming effect. The effect of hydraulic loading path on the thickness reduction of wall thickness is not apparent but significantly influences the uniformity of wall thickness distribution.
KeywordsFluid–solid coupling Hydraulic bulging Wall thickness distribution Flow field characteristics Rectangular section
Unable to display preview. Download preview PDF.
This study is supported by the Guangxi Natural Science Foundation (Grant No. 2016GXNSFAA380211); Guangxi Innovation-driven Development Project (Grant No. GKAA17204062); and Liuzhou Scientific Research and Technology Development Plan (Grant No. 2016C050203).
- 3.Tijsseling AS, Vardy AE (2005) Fluid-structure interaction and transient cavitation tests in a T-piece pipe. J Fluid Struct 20:753–762. https://doi.org/10.1016/j.jfluidstructs.2005.01.003 CrossRefGoogle Scholar
- 4.Siyuan C, Hailiang H, Linjie W (2016) Influence of installed interlayers on defensive efficiency of a warship’s liquid cabin. J Harbin Engineering University 37(04):527–532. https://doi.org/10.11990/jheu.201412040
- 6.Fengjun C (2009) Study on the deformation behavior of a tube in hydroforming with radial crushing. Guilin University of Electronic Technology, GuilinGoogle Scholar
- 9.Haitao J, Zhenli M, Di T, Haiquan W, Yongjuan D (2008) In-situ observation of microstructure in TWIP steel during tensile deformation. J Mater Eng 38(1):38–41. https://doi.org/10.3969/j.issn.1001-4381.2008.01.010
- 15.Yang W, Hongyu W, Xiang Z, Xiaomin X (2011) Strength analysis on stamping and welding impeller in centrifugal pump based on fluid-structure interaction theorem. Trans CSAE 27(3):131–136 https://doi.org/10.3969/j.issn.1002-6819.2011.03.025
- 19.Yumei Z, Junxiang L (2013) Investigation of wrinkle and fracture limits of cylindrical parts in hydromechanical deep drawing process. Hot Working Technol 42(1):87–90Google Scholar