Mechanical characteristics and energy analysis of a pre-stressed

hydraulic press frame by contact finite element method

SHI Jin-yu

(Electrical and Mechanical Engineering Training Center, Fujian University of Technology, Fuzhou 350108, China)

Abstract: Aiming at the integral performances of the fully pre-tightened assemble frame and the fatigue life of the components for a ceramic tile hydraulic press under very high working frequency, finite element model of a 32MN hydraulic press with the pre-tightened assemble frame was established, where the frictional interaction relations between the parts of frame were considered and simulated. By this combined frame model, the reasonability of pre-stressed factor was verified. The Von-Mises stress and maximum principal stress distributions of the frame of the preloaded status as well as in the working conditions were provided, and the weak areas being prone to fatigue failure were identified. Further more, the elastic deformation energy of the frame from the preloaded status of the working status was calculated respectively, from which the energy consumption of the frame was obtained. The results indicate that the energy consumptions of the upper/lower beams bending deformation is dominance, which provides useful design guidance for the ceramic tile hydraulic press.