Formulation of Equivalent Plastic Strain Accumulated in Rotating Bending Process of Metal Tubes for Severe Plastic Deformation
Formulation of Equivalent Plastic Strain Accumulated in Rotating Bending Process of Metal Tubes for Severe Plastic Deformation
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DOI：
10.4028/www.scientific.net/amr.887-888.907
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发表时间：
2014-02
期刊：
影响因子：
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通讯作者：
Zicheng Zhang;K. Manabe;T. Furushima;K. Tada
中科院分区：
文献类型：
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作者：
Zicheng Zhang;K. Manabe;T. Furushima;K. Tada
金属管材旋转弯曲成形是一种新型的大塑性变形（SPD）成形工艺，有望实现金属管材微观组织的细化和控制。在旋转弯曲成形过程中，变形区的应力分布和累积等效塑性应变对金属管材的组织细化和控制有重要影响。对金属管材旋转弯曲成形过程中变形部位的应力应变进行了分析。提出了金属管的变形模型。通过对金属管材旋转弯曲成形过程的变形分析，成功地得到了应力和累积等效塑性应变的计算公式。
The newly proposed rotating bending process of metal tubes is a novel kind of Severe Plastic Deformation (SPD) process, which is expected to refine and control the microstructure of metallic tubular materials. The stress distribution and accumulated equivalent plastic strain of deformation part have a significant influence on the microstructure refinement and control of metal tubes during the rotating bending process. The present study focused on the analysis of stress and strain of deformation part during rotating bending process of metal tubes. The model of the deforming metal tubes was proposed. The formulas for determining the stress and accumulated equivalent plastic strain were successfully achieved by analyzing the deformation of metal tubes during rotating bending process.