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首页> 外文期刊>Jordan Journal of Mechanical and Industrial Engineering >On the Deformation Modes of Continuous Bending under Tension Test
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On the Deformation Modes of Continuous Bending under Tension Test

机译：拉伸试验下连续弯曲的变形模式

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In this paper the continuous bending under tension (CBT) test is analyzed by numerical simulation. In CBT test, the material is deformed to high level of strain that is beyond the achieved strain by the standard tensile test. The main stability criterion describes the importance of compressive stress produced by bending in stabilizing the deformation. At the symmetry line of the strip, the material can be assumed simply to deform by bending and stretching in plane strain condition. The focus of this paper is to study the deformation modes through thickness at the symmetry line. It is found that the material experiences three deformations modes. The cyclic parts through thickness experiences two deformation modes: the first is limited between uniaxial tension and plane strain and the second deformation mode is limited between pure shear and uniaxial compression. The third deformation mode is observed at the middle part through thickness and it is based on tension and the contribution of through thickness stress.
机译：本文通过数值模拟分析了拉伸下的连续弯曲（CBT）。在CBT测试中，材料变形到的高应变水平超出了标准拉伸试验所达到的应变范围。主要的稳定性标准描述了在稳定变形中弯曲产生的压应力的重要性。在条的对称线上，可以假定材料在平面应变条件下通过弯曲和拉伸而简单地变形。本文的重点是研究沿对称线厚度方向的变形模式。发现材料经历了三种变形模式。贯穿厚度的循环部分经历两个变形模式：第一个变形模式被限制在单轴拉伸和平面应变之间，第二个变形模式被限制在纯剪切和单轴压缩之间。在变形的中间部分观察到第三变形模式，该变形模式基于张力和穿透厚度应力的贡献。

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