Study of the influence of force reducing column on the formation of main shield cover based on FEM-DEM coupling

In order to solve the problem of high quality forming of the main shield cover and the difficulty of forming smaller local features, the SGMF technology was proposed. Based on the finite element software ABAQUS to establish the main shield cover stamping simulation model, simulation and analysis of the SGMF of the main shield using coupled finite element method (FEM) and discrete element method (DEM). The influence of the force reducing column on the forming performance of the main shield cover is investigated. The results show that the main shield cover can be formed by the SGMF, while the force reducing column can reduce the forming force and increase the wall thickness value of the pipe.