A Combination Of Large-tonnage Deep Drawing Hydraulic Press Fuselage Structure Analysis And Design Optimization

Hydraulic press is one of the most universal equipment in the production of molding. There are many problems in traditional design method such as long period, structure redundancy, high cost etc. Along with the fast development of manufacturing, it is necessary that we should introduce a modern design ideal to assist the design of the frame for the exploitation of high performance hydraulic press. The frame of hydraulic press is analyzed and optimized, and the structure improvement is guided.The histories and the current status of the structural analysis and optimization of the frame are introduced in detail, and the characteristic of the frame structure is studied. The solid model is built with Solidworks and the model is analyzed by using ANSYS software. Pretension of the frame is simulated by way of pretension element.Static performance of hydraulic press is got by using 3-dimension integral contacting analysis, so the discipline of stress and strain distribution of the whole frame and its assembly are obtained, and then the status of pretension is analyzed.Based on the result of the finite element analysis, the parameterized model of the above beam and the below beam are rebuilt with language APDL of ANSYS software, Sub-problem optimization algorithm is adopted and their weights are used as the object function, then the best structure design parameters are obtained.Lanczos method is used in pretension modal analysis of the optimized frame. The dynamic parameters of the frame such as previous ten natural frequencies and corresponding modes are obtained and the influences of every step mode on service performance are analyzed.