Finite element analysis on neck-spinning process of tube at elevated temperature
Finite element analysis on neck-spinning process of tube at elevated temperature
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DOI：
10.1007/s00170-011-3247-0
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发表时间：
2011-10-01
影响因子：
3.4
通讯作者：
Lin, Chia-Rung
中科院分区：
文献类型：
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作者：
Huang, Chi-Chen;Hung, Jung-Chung;Lin, Chia-Rung
筒形旋压工艺是一种用于制造轴对称产品的金属成形工艺，在各种应用中得到了广泛的应用。有限元分析已成功地应用于筒体旋压过程，但没有考虑温度对颈旋的影响。为此，本研究的目的是数值研究管材在高温下的旋压过程。数值模拟采用商业软件ABAQUS/EXPLICIT。对于材料模型的构建，由于材料在高温下对应变率敏感，因此在高温和不同应变率下进行了特殊的单轴拉伸试验。对旋压管的厚度分布和外型进行了实验和模拟比较。在最后阶段，模拟结果与实验结果的平均偏差分别为10.65%和3.03%。实验结果与模拟结果吻合较好。通过数值模拟，研究了摩擦系数、轧辊平移速度、轧辊尖端半径等因素对轧辊性能的影响。
Tube spinning process is a metal forming process used in the manufacture of axisymmetric products and has been widely used in various applications. Finite element analysis has been successfully applied to the tube spinning processes, but no temperature effects have been considered on neck-spinning. For this reason, the aim of this research is to investigate numerically the neck-spinning process of a tube at elevated temperature. The commercial software Abaqus/Explicit was adopted in the simulation. For the construction of the material model, special uniaxial tensile tests were conducted at elevated temperature and various strain rates, since the material is sensitive to strain rates at high temperature. Comparisons between experimental and simulation results on thickness distribution and the outer contour of the spun tube are discussed. During the final stage, the average deviations between the simulation and experiment were 10.65% in thickness and 3.03% in outer contour. Good agreement was found between experimental and simulation results. The influence of the coefficient of friction, roller translation speeds, and the tip radius of the rollers were also investigated through numerical simulation.