何维均,袁改焕,栾佰峰,王练,储林华,刘庆.Zr-4合金管材皮尔格轧制过程数值模拟分析:宏观模型的建立、验证及塑性变形分析[J].稀有金属材料与工程,2018,47(1):82~88.[Weijun He,Gaihuan Yuan,Baifeng Luan,Lian Wang,Linhua Chu,Qing Liu.On the Pilger Rolling of Zr-4 Alloy: Finite Element Modeling and Plastic Deformation Behaviors[J].Rare Metal Materials and Engineering,2018,47(1):82~88.]
Zr-4合金管材皮尔格轧制过程数值模拟分析:宏观模型的建立、验证及塑性变形分析
投稿时间:2016-01-18  修订日期:2016-05-15
中文关键词:  锆合金  皮尔格轧制  有限元模拟  塑性变形
基金项目:创新研究群体科学基金(51421001);重庆市基础与前沿计划项目(cstc2014jcyjA50022);中央高校基本科研业务(106112015CDJXY130002)
中文摘要:
      皮尔格轧制变形对于锆合金管材的性能有着重要影响,受到学者们的高度重视。长期以来,由于皮尔格轧制是一个高度非线性的三维变形过程,开展实验研究不但成本高昂而且周期较长。本文以ABAQUS/standard平台,根据多行程皮尔格轧制的运动特点,建立了Zr-4合金管材皮尔格轧制有限元模型,并开展一整个道次的轧制过程模拟。模拟结果表明:预测的管材几何尺寸与实验结果吻合良好,而模拟的轧制力与经典的舍瓦金公式计算结果也比较相符,验证了所建立模型的准确性,可用于进一步仿真分析。模拟结果还表明开口处的管坯应力状态与轧槽底部管坯的应力状态有显著的差别。此外,轧制过程中还存在有明显的剪切变形,而且还有较大幅度的周期性波动,这主要与孔型开口以及管坯回转送进有关。
On the Pilger Rolling of Zr-4 Alloy: Finite Element Modeling and Plastic Deformation Behaviors
英文关键词:Zirconium alloy  Pilger rolling  Finite element modeling  Plastic deformation behavior
英文摘要:
      Pilger rolling process has a specific influence on the mechanical properties and texture of zirconium alloy cladding tube. Due to its complexity, experimental research on the Pilger rolling process would be very costly. Therefore, a 3D finite element model was built to simulate Pilger rolling with ABAQUS/standard package. Simulation of a full pass of Pilger rolling of Zr-4 alloy tube, including a series of forward strokes and backward strokes, was carried out. The predicted tube sizes agree well with the experimental results. Additionally, the simulated rolling force also matches well with the force calculated by classic empirical formula, which validates the accuracy of the proposed model. The simulation results show that the stress and strain states in groove-side are different from that in groove-bottom. Moreover, large shear deformation happen in the rolled tube. The simulated shear strain displays substantial fluctuations during rolling, which are attributed to the cyclic position change of element (material point) with respect to the groove-side.
作者单位E-mail
何维均 重庆大学 材料科学与工程学院 重庆 weijun.he@cqu.edu.cn 
袁改焕 国核宝钛锆业股份公司 陕西 宝鸡  
栾佰峰 重庆大学 材料科学与工程学院 重庆 bfluan@cqu.edu.cn 
王练 国核宝钛锆业股份公司 陕西 宝鸡  
储林华 国核宝钛锆业股份公司 陕西 宝鸡  
刘庆 重庆大学 材料科学与工程学院 重庆  
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