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National Natural Science Foundation of China (59975076, 50905144);State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology (09-10);NPU Foundation for Fundamental Research (JC201028);Fund of the State Key Laboratory of Solidification Process-ing in NWPU
Thin-walled tube numerical control (NC) bending is a tri-nonlinear physical process with multi-defect and multi-die constraints. The clearance on each contact interface is the major factor to indicate the contact co...