Skip to Main content Skip to Navigation
Theses

Analyse de la propagation dynamique d'une bande de cisaillement adiabatique

Abstract : The dynamic propagation of diabatic shear bands is presently analyzed. A configuration representing the experiments of Marchand and Duffy (1988) is considered in the numerical simulations. A layer of finite length and finite width is subjected to shear loading. After a transient, a steady state is attained in which adiabatic shear bands propagate with a constant velocity. The evolution of the shear band speed is firstly determined as a function of the applied velocity. A comparison between the configuration including heat conduction and the adiabatic case is made in order to stress the influence of heat conductivity on the propagation process. A diamensional analysis allows to determine a general law describing the influence of each problem's parameter on the shear band speed. Finally, the concept of a process zone is introduced. The process zone is a region propagating with the shear band tip, where an intense stress softening by thermo-mechanical coupling. It is shown how the shear band propagation is controlled by this stress softening
Document type :
Theses
Complete list of metadatas

Cited literature [67 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/tel-01748962
Contributor : Thèses Ul <>
Submitted on : Thursday, March 29, 2018 - 11:55:48 AM
Last modification on : Friday, February 26, 2021 - 2:54:02 PM
Long-term archiving on: : Friday, September 14, 2018 - 7:02:17 PM

File

Bonnet_Lebouvier.Anne_Sophie.S...
Files produced by the author(s)

Identifiers

  • HAL Id : tel-01748962, version 1

Collections

Citation

Anne-Sophie Bonnet-Lebouvier. Analyse de la propagation dynamique d'une bande de cisaillement adiabatique. Autre. Université Paul Verlaine - Metz, 2001. Français. ⟨NNT : 2001METZ017S⟩. ⟨tel-01748962⟩

Share

Metrics

Record views

33

Files downloads

41