The Study On Vibration Characteristics Of 3.15MN High Speed Hydraulic Forging Press

The vibration problem of high speed hydraulic forging press has become one of the key problems affecting the forming accuracy of the precision forging.Based on the combination of theoretical analysis and experiment,the influence of the eccentric load vibration and hydraulic impact on the vibration of the YA32-315 high speed hydraulic forging press is studied.The main work of this paper is as follows:A simplified three-dimensional model of high speed hydraulic forging press is established by SolidWorks software.Then,using the ABAQUS finite element method,the modal analysis of the high speed hydraulic forging press is carried out to verify the resonance problem of the hydraulic press.The hydraulic forging process is simulated in ABAQUS to extract the forging force.Then,the forging force was used to study the high speed hydraulic forging press upper beam with central load and lateral load with different distance and different direction.Under the same eccentric load condition,the influence of different load direction on the vibration of the high speed hydraulic forging press is analyzed.In this paper,the mechanical model of high speed hydraulic forging press hydraulic shock is established by numerical method.Then,based on the co-simulation technology of AMESim and ADAMS,the hydraulic impact characteristics of the hydraulic system under different unloading speed and different system pressure is discussed and the change of hydraulic impact after installing accumulator of hydraulic system is studied.Based on the co-simulation of the ANSYS finite element software and the ADAMS multi-body dynamics analysis software,the rigid-flexible coupled multi-body dynamics model of the high speed hydraulic forging press is established.The frequency response of vibration of high speed hydraulic forging press with hydraulic shock is studied by ADAMS Vibration module.Finally,the experimental method is used to study the vibration of the upper beam of the high speed hydraulic forging press under the condition of same partial distance with different eccentric load and different system pressure.The experimental results are compared with those of finite element simulation and dynamic simulation,and the accuracy of the simulation results is verified.