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Research of Plastic Penetration and Residual Stress in Ring Rolling Based on FEM

Author: QianDongSheng
Tutor: HuaLin
School: Wuhan University of Technology
Course: Materials Processing Engineering
Keywords: Ring Rolling Finite Element Mass scaling Forging through Groove ball - section Residual stress
CLC: TG316
Type: Master's thesis
Year: 2006
Downloads: 386
Quote: 5
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Abstract

Ring rolling is a special processing technology for the production of seamless ring member, it is through the local continuous rolling method, the thick section of the small-diameter annular blank gradually rolling NCKU diameter thin section of the ring member, it has the effort, energy, materials, high productivity, low cost of production, a wide range of products and other notable features, has a wide range of applications in the industrial field. For ring rolling the status quo, based on the ring rolled theory and elastic-plastic dynamic explicit finite element method, ABAQUS finite element analysis software for the platform, some of the basic law of the numerical simulation of the ring rolling deformation more in-depth study on ring residual stress in the pieces of cold numerical simulation. The use of the finite element simulation of the ring rolling mass scaling method. The theoretical basis of the mass scaling method and the finite element simulation of the ring rolling, classified mass scaling. Last instance analysis of the object, the the lead ring rolling process is simulated using different scaling methods suitable for finite element simulation of ring rolling, through the analysis of simulation results compare different scaling methods, summed up the lead ring rolling quality scaling method selection principle. According to the Ring Rolling through the process of theoretical research, use the ABAQUS software to establish a the ring forging through the analysis of three-dimensional finite element model and numerical simulation of forging through the process in the case of different reduction and the size of the roll, by analyzing the different the case of the reduction and the different size of the roll, the ring forging through the process of distribution of the plastic zone, ring forging through the process of distribution of plastic zone size reduction and roll through the ring forging investigated . Design groove ball-section ring cold-rolled rough, die size and process parameters, using the ABAQUS software groove ball-section ring of the three-dimensional finite element model of the cold-rolled, cold rolling process analog groove ball-section ring pieces of cold rolled forming stress and strain distribution law, inside and outside diameter growth law. And in accordance with the design parameters on in D56G90 cold-rolling mill cold rolling experiments, the experimental results and the simulation results agree well, to verify the correctness of the cold-rolled groove ball-section ring blank, die size and design of process parameters. Groove ball-section ring of cold rolling process design basis. Groove ball-section ring cold rolled residual stress finite element model of the residual stress of the cold-rolled groove ball-section ring finite element calculations, and by mechanical methods and X-ray stress measurement method D56G90 cold rolling mill groove ball-section ring cold rolled products were determined experimentally. Obtained by analyzing and comparing the variation of the residual stress in the cold rolling process groove ball-section ring, ring to control groove ball-section cold-rolled residual stress and dimensional accuracy basis.

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