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本文采用刚粘塑性动力显式有限元方法模拟了环件热轧时的金属流动规律。模拟结果揭示出环坯形状、尺寸，温度和轧制加载速度对工艺性指标和效率性指标的影响
In this paper, the rigid-viscoplastic dynamic explicit finite element method is used to simulate the metal flow during hot rolling. The simulation results reveal the influence of the shape, size, temperature and rolling speed of the billet on the technical index and the efficiency index