Abstract
AbstractThe stress distribution and deformation of frame in bending and torsion condition with the load 30 tons are computed by FEA method. The result show that there is stress concentration. Using FEA and experimental method get the first two modal frequencies and modes of frame at free conditions. The results show that the frequency is low and the dynamic performance of the frame is not well. The frame structure was designed by the topological optimization method. To design the longitudinal beam for variable cross-section structure and redesign beams type. The results of finite element steady-state mechanics and modal analysis show that the stress of the improved frame structure reduced significantly and low order natural frequency improved. The design of the improved frame structure is reasonable.KeywordsFrameFinite element analysisModal analysisModal testTopology optimization
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