Hydro-Mechanical Deep Drawing Simulation and Preparation of Novel Al-Li Alloy Irregular Cups

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Abstract:

The true stress-strain curves of 2198-T3 aluminum-lithium alloy in three different orientations (0°,45° and 90°) were measured by uniaxial tensile test. Finite element analysis technique was used to simulate the forming process of irregular cup, and the hydro forming experiments were conducted with YB32-100t press machine. The results showed that the key forming parameter-n values were similar in three orientations. Simulation results illustrated that the thickness of the blank reached the lowest value at the round corner. Experimental results verified friction was a significant factor to manufacture a qualified competent. Meanwhile, the experimental results agreed well with the simulation ones. The practical thickness distribution of 2198-T3 irregular cup along the section line was coincided with simulation.

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337-340

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January 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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