Abstract: Taking a transfer table structure system as research object,the parametric finite element model is built and analysed by ANSYS.For this transfer table,two optimization mathematical models were built to solve the problem of insufficient stiffness of cantilever which increase the structural support location as optimal design variables besides the girder cross section size parameters.Building the response surface approximation model in Isight,the Multi-Island Genetic Algorithm(MIGA) was used to solve the problem.The results show that the strength and stiffness of the improved structure can meet the requirements.The weight of the structure can be decreased by 33.72 %,and the lightweight effect was obvious.The research results can provide theoretical guidance for design and optimize of transfer table.

Key words: transfer table, finite element method, support location, lightweight design