Experimental investigation and computational modelling of 304LN stainless steel under constant and variable strain path multiaxial loading conditions

Rao, Surya P.; Sivaprasad, S.; Bar, H.N.; Dey, Partha Pratim

doi:10.1016/j.ijfatigue.2024.108581

International Journal of Fatigue

2025

DOI: 10.1016/j.ijfatigue.2024.108581

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Experimental investigation and computational modelling of 304LN stainless steel under constant and variable strain path multiaxial loading conditions

Surya P. Rao,

S. Sivaprasad,

H.N. Bar

et al.

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Multiaxial Fatigue Lifetime Estimation Based on New Equivalent Strain Energy Damage Model under Variable Amplitude Loading

Tao,

Pan,

Zhang

et al. 2024

Crystals

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The largest normal stress excursion during contiguous turn time instants of the maximum torsional stress is presented as an innovative path-independent fatigue damage quantity upon the critical plane, which is further employed for characterizing fatigue damage under multiaxial loading. Via using the von Mises equivalent stress formula, an axial stress amplitude with equivalent value is proposed, incorporating the largest torsional stress range and largest normal stress excursion upon the critical plane. The influence of non-proportional cyclic hardening is considered within the presented axial equivalent stress range. Moreover, according to proposed axial equivalent stress amplitude, an energy-based damage model is presented to estimate multiaxial fatigue lifetime upon the critical plane. In order to verify the availability of the proposed approach, the empirical results of a 7050-T7451 aluminum alloy and En15R steel are used, and the predictions indicated that estimated fatigue lives correlate with the experimentally observed fatigue results well for variable amplitude multiaxial loadings.

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Multiaxial Fatigue Lifetime Estimation Based on New Equivalent Strain Energy Damage Model under Variable Amplitude Loading

Tao,

Pan,

Zhang

et al. 2024

Crystals

View full text Add to dashboard Cite

show abstract

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Experimental investigation and computational modelling of 304LN stainless steel under constant and variable strain path multiaxial loading conditions

Cited by 1 publication

References 26 publications

Multiaxial Fatigue Lifetime Estimation Based on New Equivalent Strain Energy Damage Model under Variable Amplitude Loading

Multiaxial Fatigue Lifetime Estimation Based on New Equivalent Strain Energy Damage Model under Variable Amplitude Loading

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