Construction of sliding constraint surfaces based on QP model in multi-step inverse analysis

Liu, Weijie; Hu, Ping; Zhou, Ping; Zhang, Xiangkui
May 2013
AIP Conference Proceedings;May2013, Vol. 1532 Issue 1, p388
Academic Journal
In this paper, the sliding constraint surfaces are automatically generated by a Pseudo-Minimum Area method (PMA), and the Initial Guess is generated on the constructed sliding constraint surface based on the One-step inverse approach. In the PMA method, the three-dimensional construction problem of sliding constraint surfaces was converted into a Quadratic Programming (QP) problem from the perspective of optimization. Since the high-efficiency solving of QP problems, the sliding constraint surfaces can be generated efficiently. Constructed sliding constraint surfaces and Initial guesses are applied to the multi-step drawing process. The numerical analysis result is compared with One-step inverse analysis and DYNAFORM to evaluate the effectiveness of the multi-step inverse analysis.


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