In this study, the automotive glove-box-cover was decided as a model, which was assembled on the instrument panel. The material of the cover was Kingfa Sci & Tech Co Ltd, PP+EPDM+20%Talc co-polymer. Firstly, the effects of the process parameters on warpage were examined using FFD. To look for the warpage values, the CAE software Moldflow was used. The significant parameters were found out. Secondly, to determine the distortions of the special points over the top surface of the glove-box-cover, the software Ansys10.0 was used. The structural analyses of the glove-box-cover with different thickness were done in order to determine the performance, and the suggested thickness of the cover was pointed out. At the same time, the strongest and weakest points were found out.
In this paper, die wear during fine-blanking process of a kind of automobile synchronizer slipper was investigated based on Finite Element Method (FEM) and experiments. The Finite Element (FE) model to simulate the fine-blanking process of the automobile synchronizer slipper was established on the DEFORM-3D software platform, and Archard's wear model was employed to calculate die wear during the process. Meanwhile, mesh refinement and automatic remeshing technique were used during meshing process of the blanked materials and bottom die in order to achieve high accuracy results of FE simulations and improve the computational efficiency. Simulation results have been verified and show good agreement with the real manufacture. In addition, relationships between die wear and the process parameters during fine-blanking process such as pressure pad force, ejector force, blanking speed, blanking clearance, fillet radius of bottom die as well as hardness of bottom die were investigated, respectively via FEM. The simulation results indicate that die wear is in proportion to the pressure pad force, ejector force, blanking speed and fillet radius of bottom die, while in inverse proportion to the blanking clearance and hardness of bottom die, which will provide a reliable reference for the real manufacture and engineering application.
If finite element models for beam structures of the rail weld CNC fine milling machine are built, and static analysis and modal analysis are used to model the beam structure, it can be concluded that the beam has sufficient margin in strength but lower stiffness. The beam structure is optimally designed with orthogonal test. After optimization, the beam body has been obviously improved in stiffness, and reduced lightly in weight.
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