Open AccessDetermination of Lemaitre damage parameters for DP590 steel using Teacher-Learner based optimization
Author(s) -
Ashwani Verma,
Ravindra K. Saxena
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1240/1/012101
Subject(s) - finite element method , structural engineering , dual phase steel , ultimate tensile strength , component (thermodynamics) , fracture (geology) , work (physics) , materials science , computer science , mechanical engineering , composite material , engineering , martensite , microstructure , physics , thermodynamics
Dual phase (DP) steel is widely used in high strength applications. The components or parts some-times damage under the applied load during the production stage or the service stage. The damage behaviour of material under such loading conditions need to be analysed. The finite element analysis of the component and/or material incorporating the damage model is a useful step. The determination of parameters of the damage model envisages the application of such models into the numerical analysis. The present work proposes a model to determine the parameters of the Lemaitre damage model using the “Teacher-Learner based optimization” (TLBO) algorithm and the finite element method. The model simulates the tensile test and predicts the flow curve till fracture to determine the optimum set of parameters for the Lemaitre damage model. The proposed model incorporating uncoupled TLBO algorithm and finite element method is a general model and can be effectively employed to determine the values of the unknown parameters for the model.