Quality comparison of Y-shape joints by tube hydroforming with and without counterforce

Keywords: tube hydroforming, Y-shaped joint, tubular metal forming, counter punch force


The design capability, strength, and structural rigidity provided by tube hydroforming (THF) are successfully used in many applications to produce high-strength parts and assemblies with improved mechanical properties, optimized service life, and weight features. In tubular metal forming, output parameters such as branch height, distribution of tube wall material thickness, distribution of damage factor, metal flow, effective stress, and effective strain significantly affect the quality of the product after the forming process. Therefore, this paper aims to evaluate the manufacturing quality of Y-shape joints from AISI304 material steel tube through output parameters of THF process with and without counter punch force on numerical simulation base. The Finite Element Method (FEM) has become an established feature of metal forming technology. The objective of FEM is to replace costly and elaborate experimental testing with fast, low-cost computer simulation. The simulation study uses finite element method-based virtual prototyping techniques to characterize output parameters, gain insight into strain mechanics, and predict mechanical properties of shaped components. The research results are presented clearly and unambiguously through the evaluation of 7 criteria to compare the quality of the specimens hydroformed by two surveyed cases and optimize the crucial input process parameters. And these data can be applied in experiments, more efficient product and process design, calculation, and control of input parameters avoiding costly trial and error in industrial production. The findings can help technologists optimize process parameters in the hydroforming process of products with protrusion from a tubular blank


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Author Biographies

Quang Vu Duc, University of Economics - Technology for Industries

Department of Machines & Fundamentals of Machine Design

Duy Dinh Van, Hanoi University of Science and Technology

Department of Metal Forming

Trung Nguyen Dac, Hanoi University of Science and Technology

Department of Metal Forming

Quang Nguyen Huu, University of Economics - Technology for Industries

Department of Mechatronics


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How to Cite
Duc, Q. V., Van, D. D., Dac, T. N., & Huu, Q. N. (2022). Quality comparison of Y-shape joints by tube hydroforming with and without counterforce. EUREKA: Physics and Engineering, (4), 46-56. https://doi.org/10.21303/2461-4262.2022.002256