Finite Element Analysis And Optimization Of YH30-400 Hydraulic Press Frame Structure

Hydraulic press is an important smithery mechanism in producing the large-size forgings. There are many problems in frame structure by traditional design method such as long period, structure redundancy, high cost and lack of validation etc. The application of finite element analysis and structural optimization is significant in shortening the period of production development, in creasing the quality of production, reducing the cost of manufacture and improving the enterprise competitive ability. Static characteristics of finite element analysis for the frame of YH30-400 press are researched in this present dissertation using finite element analysis software ANSYS, and some optimal designs of press frame structure have been recommended based on the results of analysis. The main research contents and results of this paper as follows:(1)Static characteristics of finite element analysis for the frame of the press is researched. 3D-FEM model of the frame using tetrahedron solid element is built up by APDL of ANSYS, and calculated the distribution of stress and deformation of the frame in circumstance of full load(400 ton). The primacy deformation of the frame is angular deformation, the maximal stress is found in the connection corner of lower-beam and upright post. The result is approximately equal with the fact.(2)Extracting the results of static characteristics of finite element analysis, setting the thickness of several steel plates of frame as design variables, taking the intensity and rigidity as the constraint condition, taking the whole volume of the frame as the subject function, compilling the design program of optimal analysis file and optimization file with APDL. The accurate and best design parameters are obtained by taking the sub-problem method, and the weight of frame is reduced effectively, the goal of light weight is maked.Static characteristics of finite element analysis for the frame testified the deformation and the stress distribution, structural optimal analysis offers the design after some method and reference, and has important theoretical meaning and application value.