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This paper is about structure optimization of agricultural vehicle frame which adopts the method of adding strengthen box ,set up Frame and strengthen box parameterized mode Based on APDL , Using the optimization module of ANSYS to optimize the shape of the box and place got obvious improvement to the bad stress of longitudinal beam,Thus the overall performance of the frame is improved.

We aimed at high speed machining center high machining accuracy and lightweight design requirements ,Then design the two different stiffened plate structure workbench, The one use traditional design method, the other use bionic design method; Optimize the dimensions of bionic stiffened plate design based on CAD/CAE system integration and hierarchical optimization techniques, got the optimal size; through the static analysis and modal analysis verify the superiority of the optimization schemes.