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Article Dans Une Revue Lecture Notes in Mechanical Engineering Année : 2024

Consistent Modeling of Thermo-Viscoplasticity for High-Speed Processes

Patrice Longère

Résumé

A series of high-strain rate tests has been carried out involving high-speed, kinematic and thermal metrology. The concomitant measurement of strain, stress and self-heating allowed the estimation of the inelastic heat fraction and further increase in inelastic stored energy. A thermo-viscoplastic constitutive model has then been developed within the irreversible thermodynamics framework by considering state variables and driving forces different from those usually considered. The experiment-based and physics-motivated approach proposed allows for deriving loading-path dependent self-heating consistently from the constitutive model, without the need for considering any arbitrary inelastic heat fraction.
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Dates et versions

hal-04224105 , version 1 (01-10-2023)

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Patrice Longère. Consistent Modeling of Thermo-Viscoplasticity for High-Speed Processes. Lecture Notes in Mechanical Engineering, 2024, Lecture Notes in Mechanical Engineering, ICTP 2023 - Volume 4, pp.498-508. ⟨10.1007/978-3-031-42093-1_48⟩. ⟨hal-04224105⟩
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