9YOON JeongWhan, DICK R E. BENCHMARK 1-earing evolution during drawing and ironing processes [ C ]//The Numisheet' 2011 Benchmark Study 8th Int Conf & Workshop Numer Simulation 3D Sheet Metal Forming Processes, Seoul, 2011.
10Richard L. Klimisch. Automotive aluminum- protecting what's important[J]. Light Metal Age, 2001, (2) : 72 -80.
