Topic
Hydroforming
About: Hydroforming is a research topic. Over the lifetime, 2796 publications have been published within this topic receiving 26293 citations. The topic is also known as: Bulge forming.
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TL;DR: In this paper, a self-feeding based procedure is proposed with the intention of being a fast method to be used as a first estimate of suitable process parameters, which only requires a limited number of simulation runs.
28 citations
TL;DR: In this paper, the authors used the analysis of variance (ANOVA) technique to determine the statistical significance of the corrosion resistance differences between different manufacturing conditions, and then they used this technique to obtain the corrosion current density (Icorr, μA-cm−2) values obtained from experiments.
28 citations
TL;DR: In this paper, a bursting failure in tube hydroforming under combined internal pressure and independent axial feeding is predicted analytically and numerically using the Swift's criterion for diffuse plastic instability and the ductile fracture criterion.
28 citations
TL;DR: In this paper, an analytical model on the wrinkling suppression for the hydroforming of curved surface shell was proposed and achieved by the combination of stress model and geometrical model, and an experimental setup and simulation model were designed to verify the accuracy of analytical model.
28 citations
TL;DR: In this paper, the authors investigate the manufacturing of a bipolar plate used in proton exchange membrane fuel cells by means of warm hydroforming, adopting an aluminium alloy (AA6061) as sheet material.
Abstract: This research study focuses on the manufacturing of a bipolar plate used in proton exchange membrane fuel cells. In particular, the authors investigate the manufacturing of the part by means of warm hydroforming, adopting an aluminium alloy (AA6061) as sheet material. Both the channel profile (the reagent channel width and the die upper radius), and the bipolar plate geometries (in terms of channel layouts) are investigated by means of finite element simulations. Preliminary experimental investigations were carried out in order to define both the mechanical (flow curves) and strain behaviours (forming limit curves) of the adopted aluminium alloy according to temperature and strain rate. Subsequent finite element investigations aimed to define the channel profile by means of 2D models: a statistical approach was used to evaluate the dimension of the reagent channel width, the die upper radius and the sheet thickness. Finally, proposed bipolar plate geometries were investigated by running 3D simulations at different working temperatures and oil pressures in order to evaluate: (1) the bipolar plate geometry able to avoid regions with critical thinning and (2) suitable parameters for the warm hydroforming process.
28 citations