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<p>SS316L is widely used in the construction of pressure vessels and piping components in nuclear systems such as bellows. The design and manufacturing of components in critical applications require an understanding of the monotonic and cyclic properties of the material used, including the constitutive parameters defining the hardening of the material. This paper presents the tensile and low cycle fatigue (LCF) response of a material at room temperature. LCF tests were carried out at a fixed strain rate of 3×10<sup>−3</sup>&#xa0;s<sup>−1</sup> at various strain amplitudes ranging from ±0.25% to ±1.0%. From the experimental data, cyclic stress–strain curves, strain–life relationships, and design fatigue curves of the material were generated in accordance with ASME Section III. Isotropic and kinematic hardening parameters were also estimated and validated by numerically modeling the hysteresis loops using finite element analysis.</p>

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Low cycle fatigue response of SS316L and estimation of constitutive parameters for a combined isotropic–kinematic hardening model at room temperature

  • 期刊论文

  • 发表日期：

    2025年3月14日

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  • Aakash,
  • S C S P Kumar Krovvidi,
  • R Kannan,
  • A Nagesha,
  • A K Dureja

摘要

SS316L is widely used in the construction of pressure vessels and piping components in nuclear systems such as bellows. The design and manufacturing of components in critical applications require an understanding of the monotonic and cyclic properties of the material used, including the constitutive parameters defining the hardening of the material. This paper presents the tensile and low cycle fatigue (LCF) response of a material at room temperature. LCF tests were carried out at a fixed strain rate of 3×10−3 s−1 at various strain amplitudes ranging from ±0.25% to ±1.0%. From the experimental data, cyclic stress–strain curves, strain–life relationships, and design fatigue curves of the material were generated in accordance with ASME Section III. Isotropic and kinematic hardening parameters were also estimated and validated by numerically modeling the hysteresis loops using finite element analysis.