Numerical Simulation & Optimization Of F738 Shell Body Part Forming Process

F738 right shell body part is key part of ship ,which was extractive cast. Based on contradict pull intension, bear pressure intension and so on mechanical performance inquest, it need to employ forging technics production .But the part's shape is complicate, so the feasibility and stabilization of forging process cann't be guaranteed . For the purposes of shortening the exploitation cycle of the part and lowing the experiment expense, the dissertation employs based on rigid visco-plastic finite element method numerical simulation technique to study the forming processes.The dissertation employs advanced numerical analysis method-thefinite element method(FFM), combining the factual characteristics of the metal forming processes in high temperature ,demonstrates in detail the three-dimension problem's rigid visco-plastic finite element method , introduce the analysis method of metal plastic shaping processes and rigid visco-plastic finite element method's basic theory, constitutes rigid visco-plasticity model, deduces based on Lagrange factor method and over stress model's rigid visco-plastic finite element model and qualitative analyses the technics processes of F738 right shell body forging part.According the above theory, using the finite element numericalsimulation soft-DEFORM, simulate the forming processes of F738right shell body forging part, bring foreword influence shell body shape's processes parameters, analysis and study some mostly influence factor of forging part shaping rule , optimize and gain possibility forge up to grade forging part's processes and die parameters . The result plays guidance to F738 right shell body forging part's production.