Research on aluminum alloy sheet thermoplastic deformation behavior based upon warm bulging test
Author(s) -
Gaoshen Cai,
Xiaojun Zhou,
Lihui Lang,
Sergei Alexandrov
Publication year - 2016
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4942817
Subject(s) - hydroforming , materials science , strain rate , deformation (meteorology) , aluminium , composite material , sheet metal , alloy , hydrostatic test , mechanics , tube (container) , physics
The rate of fluid pressure variation is a crucial factor to indicate the forming speed and the pressure rate is applied to be one factor that can influence the deformation of material in warm sheet hydroforming. In this study, warm bulging test was conducted to obtain bulging pressure-height curves with different temperatures and pressure rates. Fitting the bulging pressure-equivalent strain curves obtained using bulging test with surface fitting method, the fitted equation of bulging pressure on equivalent strain and pressure rate was achieved, and the fitting result shows a good accordance with experimental and calculated values. Then, the relation between pressure rate and strain rate was obtained. The results of warm bulging test indicated that the deformation behavior of metal material is sensitive to pressure rate, which is of great significance for warm sheet hydroforming
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