Numerical simulation of the molding process of the

2022-08-26
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Numerical simulation of the forming process of self-lubricating bearing die

the stamping process of self-lubricating bearing is a very complex elastic-plastic large deformation mechanical process, which includes geometric linearity, material nonlinearity and boundary nonlinearity at the same time. In the actual production process, various forming defects (such as wrinkling, fracture, elastic out of tolerance, etc.) often appear in the stamping process due to unreasonable die design

mold CAE can optimize the mold forming process and mold structure, including data retrieval, process calculation, scheme selection, determination of the shape and size of parts and molds, and the drawing of friction force diagrams between moving parts. Because the CAE function of ANSYS is mainly applicable to the fields of small deformation such as structure and response, for the analysis of large deformation of metal, because it has the function of redrawing the deformed lattice necessary for plastic simulation, and it cannot transmit and inherit the field information related to the deformation history, using MARC software, the Lagrange implicit finite element method with elastoplastic large deformation and large strain is used to update step by step, The combined shell element of quadrilateral DKT (discrete Kirchhoff theory) deck bending element and thin-film isoparametric quadrilateral element is introduced to simulate and analyze the different kinds of self-lubricating bearing punching, the pressure forming process for different materials and the unloading and shaping process of the formed mold, so as to accurately understand the force energy relationship, stress and strain distribution in the process of clearing the angle value in the stamping forming process Metal flow and temperature distribution, and predict defects, adjust process parameters, and modify process and mold design in time

(1) adopt U6 system integration and object-oriented technology with Marc a platform with large volume and mass, and use U6 development tools and software engineering methods to establish and develop a special mold CAD system. It is simple and intuitive, easy to operate, and has good human-computer interaction parts, expandable parts and transplantable parts. The use of this system does not require users to grasp the professional knowledge of UG software, which is suitable for product seriation design, greatly improves the efficiency of mold design and product accuracy, promotes the standardization of design and manufacturing, reduces the cost of mold and products, and lays a good foundation for the development of product CAD/CAE/CAM system based on UG and the automatic design and manufacturing of mold

(2) use the finite element analysis method to conduct numerical simulation analysis on the stamping and forming process of self-lubricating bearing and the unloading and shaping process of the formed mold, so as to avoid the phenomenon of mold repair in the traditional design and manufacturing pilot mold, shorten the mold development period, and improve the product quality and production efficiency

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