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2020 - 02 - 27
厚度:0.35mm吸液芯形式:烧结
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Comparison of radial forging between the two- and three-split dies of a thin-walled copper tube duri
Comparison of radial forging between the two- and three-split dies of a thin-walled copper tube during tube sinking 作者:Yong Li, Jinlong Huang, Guangwen Huang, Wei Wang, Jucong Chen, Zhixin Zeng School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China  Abstract:This study presents a finite element (FE) analysis of the tube sinking of a thin-walled copper tube through a radial forging process (RFP) with two- and three-split dies without mandrel. Three-dimensional FE models of two-split dies RFP and three-split dies RFP are established. The effects of die number on the formation characteristics of the thin-walled copper tube through RFP are studied. Results show that the strain of the thin-walled copper tube through three-split dies RFP distributes more uniformly than that through two-split dies RFP under the same conditions. Defects such as wrinkles and wings more easily emerge at the surface of the thin-walled copper t...
2014 - 01 - 01
Analysis of Collapse in Flattening a Micro-grooved Heat Pipe
Analysis of Collapse in Flattening a Micro-grooved Heat Pipe 作者:Yong Li, Ting He, Zhixin Zeng School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China  Abstract:The collapse of thin-walled micro-grooved heat pipes is a common phenomenon in the tube flattening process, which seriously influences the heat transfer performance and appearance of heat pipe. At present, there is no other better method to solve this problem. A new method by heating the heat pipe is proposed to eliminate the collapse during the flattening process. The effectiveness of the proposed method is investigated through a theoretical model, a finite element(FE) analysis, and experimental method. Firstly, A theoretical model based on a deformation model of six plastic hinges and the Antoine equation of the working fluid is established to analyze the collapse of thin walls at different temperatures. Then, the FE simulation and experiments of flattening ...
2013 - 01 - 01
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