Abstract
Previous mechanical analytical theories of superlastic bluge into a shaped die are all based on uniform thinning assumption, but in fact, the thinning process is obviously non-uniform. In this paper, the non-uniform thinning mechanical analytical equations of superlastic bluge in a cylindrical die based on superlastic bulge constitutive equation with variable m are established and verified by experiments performed on typical superlastic material ZnAl4Cu alloy sheet. Experimental results show that non-uniform thinning mechanical analytical model can reflect the deformation process of bulging in a cylindrical die.
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