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This work investigated the effect of loading waveform on the material's response of 304LN stainless steel for the same equivalent strain amplitude. A triangular, sinusoidal, and trapezoidal proportional multiaxial loading waveform was used for the analysis. The hysteresis loop was compared for both axial and shear loading. The von Mises stress was evaluated and compared for the three waveforms. The sinusoidal Waveform was the most critical loading waveform and the triangular waveform was the most suitable waveform. The SWT, Liu-I, and II parameters were also estimated to compare the three loading waveforms. SWT parameter was highest for the sinusoidal waveform and least for the triangular waveform. Liu-I and II were also given the same kinds of results for the three waveforms.

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Investigation of Multiaxial Fatigue Behavior of 304LN Stainless Steel Under Various Cyclic Loading Waveforms and Comparing the Damage

  • 会议论文

  • 发表日期：

    2025年

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  • Sayan Ghosh,
  • Surya P. Rao,
  • P. P. Dey,
  • S. Sivaprasad

摘要

This work investigated the effect of loading waveform on the material's response of 304LN stainless steel for the same equivalent strain amplitude. A triangular, sinusoidal, and trapezoidal proportional multiaxial loading waveform was used for the analysis. The hysteresis loop was compared for both axial and shear loading. The von Mises stress was evaluated and compared for the three waveforms. The sinusoidal Waveform was the most critical loading waveform and the triangular waveform was the most suitable waveform. The SWT, Liu-I, and II parameters were also estimated to compare the three loading waveforms. SWT parameter was highest for the sinusoidal waveform and least for the triangular waveform. Liu-I and II were also given the same kinds of results for the three waveforms.