Formability of High Temperature and High Strain Rate Superplastic Deep Drawing Process for AA2219 Cylindrical Cups
- Professor, Department of Mechanical Engineering, JNTUH College of Engineering, Kukatpally, Hyderabad, India.
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High strain rate superplastic forming process is gaining importance in automotive and aerospace industry as it reduces manufacturing time. In this present work, a statistical approach based on Taguchi Techniques and finite element analysis were adopted to determine the formability of cylindrical cup using high strain rate deep drawing process. The process parameters were temperature, strain rate, coefficient of friction and blank holder velocity. The FEA results obtained using finite element software namely D-FORM were validated through the experimental results. The AA2219 sheets were used for the deep drawing of the cylindrical cups. The strain hardening exponent was 0.36 at strain rate of 5.0 s-1 and temperature of 400oc. The formability of the cups was outstanding for the surface expansion ratio in the range of 1.6 to 2.5. The temperature and strain rate have substantial effects on the effective stress and the height of the cups drawn.
[A. Chennakesava Reddy (2015); Formability of High Temperature and High Strain Rate Superplastic Deep Drawing Process for AA2219 Cylindrical Cups Int. J. of Adv. Res. 3 (Oct). 1016-1024] (ISSN 2320-5407). www.journalijar.com
