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首页> 外文会议>STP 1467; International Symposium on Zirconium in the Nuclear Industry; 20040613-17; Stockholm(SE) >Simulation of Cold Pilgering Process by a Generalized Plane Strain FEM
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Simulation of Cold Pilgering Process by a Generalized Plane Strain FEM

机译：广义平面应变有限元模拟冷P过程

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摘要

In order to attain a defect-free operation in the cold pilgering process, one must understand the material behavior through both experimental and computational study, optimization of the tool profile (mandrel and rolls), and appropriate selection of the tool material. Until now, several simplified computational methods have been presented, because 3-dimensional analysis is still far away in such a complicated forming process. In this paper, a generalized plane strain model has been employed for the simulations of cold pilgering of fuel cladding for nuclear applications. In this model, the tube material is considered to be viscoplastic at the loading stage of pilgering and totally elastic after every stroke. Therefore, considering the tube springs back after each stroke, it can be investigated how the tube shape affects deformation in the next pilgering stroke. A cold pilgering of zirconium alloy by two types of tools has been computed and compared. Moreover, computed results are compared with experimental results. Throughout the studies, the effect of tube spring back and the effect of design parameters on the deformation behavior are demonstrated.
机译：为了在冷皮尔斯过程中实现无缺陷的运行，必须通过实验和计算研究，优化工具轮廓（心轴和轧辊）以及适当选择工具材料来了解材料的行为。到目前为止，已经提出了几种简化的计算方法，因为在如此复杂的成型过程中，三维分析仍然遥不可及。在本文中，已将广义平面应变模型用于核应用燃料包壳的冷皮尔斯模拟。在该模型中，管材在皮尔格尔的加载阶段被认为是粘塑性的，并且在每个冲程之后都具有完全弹性。因此，考虑到管在每次冲程后都会弹回，可以研究管的形状如何影响下一个皮尔格冲程。计算并比较了两种工具对锆合金的冷皮尔济效应。此外，将计算结果与实验结果进行了比较。在整个研究中，证明了管回弹的影响和设计参数对变形行为的影响。

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