In view of the finite element modeling for high speed forging hydraulic press,the method of node coupling and spring connection was used to model the movebeam and frame instead of the overal modeling used in the past research, which imitated the working connection conditions of hydraulic press well. Through analyzing and calculating finite element modes of vibration for 80MN high speed forging hydraulic press, finite element model frequency and mode shape were got. The analysis of model frequency shows that minimum natural frequency of 3.8486Hz is greater than the operating frequency of 1.25Hz, so this hydraulic press will not happened to resonate. The analysis of mode shape shows that the amplitude of the third is 21.9% larger than that of others, so the vibration of downbeam has a great impact on the work accuracy of hydraulic press.
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