A Description of Tensile Stress-strain Curve Based on the Random Barriers Theory

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概要

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• A new approach of describing the time-independent tensile stress-strain curve is presented by means of the concept of the field of resisting force against the movement of dislocations. The cyclic plasticity model proposed in the previous paper based on this concept indicates that a stress-strain relation in the steady state can be expressed by three internal variables associated with such field and microscopic structures. In this paper, a tensile stress-strain relation with different types of yielding can be described by reflecting the microscopic behaviors such as the catastrophic increase of movable dislocation density at the early stage of one of these three variables. This description has provided satisfactory agreement with each experimental curve for carbon steel and brass with a wide range of strains.

著者

• Obataya Yoichi

  Faculty Of Engineering Fukui University

• KOHNO Shinobu

  Faculty of Engineering.Fukui University

• Kohno Shinobu

  Faculty Of Engineering Fukui University

関連論文

• A Description of Tensile Stress-strain Curve Based on the Random Barriers Theory
• Rate-dependent Behavior in Cyclic Plasticity : Description Based on the Random Barriers Theory
• Effects of Variations of the Maximum Stress and Stress Ratio on the Behaviors of Biaxial Mechanical Ratcheting
• A Constitutive Equation in Cyclic Plasticity Based on the Random Barriers Theory
• Effect of Thermal Fluctuations in Cyclic Plasticity
• A Description of the Yield-Point Phenomenon of Carbon Steel Based on the Random Barriers Theory

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