Transactions of Materials and Heat Treatment

Title：Numerical simulation on tube hydroforming for a silencer based on Dynaform

Authors： Wang Haiyan Li Yuanyuan Song Aili Jiang Yunchun Huang Binbing

Unit： Qingdao Huanghai College Tsinghua University

KeyWords： silencer hydroforming splitting loading path numerical simulation

ClassificationCode：TG394

year,vol(issue):pagenumber：2018,43(10):91-94

Abstract：

The hydroforming process of tube was studied, and the numerical simulation of tube hydroforming for a silencer was conducted. Then, the forming process of the silencer was analyzed by simulation software Dynaform, and the forming limit and the thickness variation were studied. For the splitting defect during the hydroforming process, the qualified silencer was formed by optimizing the loading path etc. And the maximum thinning rate of parts is up to 29.6%. Based on the numerical simulation, the actual hydroforming test was carried out according to the best technological scheme, and the thicknesses of parts were compared by the simulation results and the experiment results. Furthermore, the relative deviation is less than 3%, and the relative variation trend is consistent. The research results show that the simulation and analysis of hydroforming based on numerical simulation can accurately predict the forming state of parts and improve the efficiency of design and production.

Funds：

江苏省产学研前瞻性联合研究项目（BY2014069）

王海艳（1979-），女，硕士，副教授，E-mail：541101645@qq.com

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