This paper assesses the accuracy and reliability of the Theory of Critical Distances (TCD) and the Strain Energy Density (SED) approach in estimating the lifetime of plain and notched specimens subjected to cyclic loading. To validate the two approaches for plain and notched components under uniaxial and multiaxial fatigue loading, a large bulk of experimental data taken from the literature was re-analyzed, with the state variables, i.e. the stress distributions and the strain energy density, being calculated via the Finite Element (FE) method. The results obtained demonstrate that both the TCD and the SED approach can provide highly accurate fatigue life estimation. In addition, these two approaches require little computational effort and little calibration information to be implemented and used for fatigue design in situations of practical interest. © 2019 Elsevier Ltd

Comparison of TCD and SED methods in fatigue lifetime assessment / Hu, Z.; Berto, Filippo; Hong, Y.; Susmel, L.. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - 123:(2019). [10.1016/j.ijfatigue.2019.02.009]

Comparison of TCD and SED methods in fatigue lifetime assessment

Berto Filippo;
2019

Abstract

This paper assesses the accuracy and reliability of the Theory of Critical Distances (TCD) and the Strain Energy Density (SED) approach in estimating the lifetime of plain and notched specimens subjected to cyclic loading. To validate the two approaches for plain and notched components under uniaxial and multiaxial fatigue loading, a large bulk of experimental data taken from the literature was re-analyzed, with the state variables, i.e. the stress distributions and the strain energy density, being calculated via the Finite Element (FE) method. The results obtained demonstrate that both the TCD and the SED approach can provide highly accurate fatigue life estimation. In addition, these two approaches require little computational effort and little calibration information to be implemented and used for fatigue design in situations of practical interest. © 2019 Elsevier Ltd
2019
computation theory; reliability theory; strain energy; stress analysis; welds, calibration information; computational effort; fatigue life estimation; multi-axial fatigue; notched components; strain energy density; theory of critical distances; uniaxial fatigue, fatigue of materials; modified wöhler curve; multiaxial fatigue; strain energy density; theory of critical distances; uniaxial fatigue
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Comparison of TCD and SED methods in fatigue lifetime assessment / Hu, Z.; Berto, Filippo; Hong, Y.; Susmel, L.. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - 123:(2019). [10.1016/j.ijfatigue.2019.02.009]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1654438
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