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Meeting NUMIFORM 2019: The 13th International Conference on Numerical Methods in Industrial Forming Processes
Symposium S-01: Modeling of the Anisotropic Behavior in Plasticity
Presentation Title Characterization of Anisotropic Yield Criteria Using an Indentation Based Technique for Steel Sheets
Author(s) Tanmaya Mishra, Matthijn de Rooij, Meghshyam Shisode, Javad Hazrati, Dirk Schipper
On-Site Speaker (Planned) Tanmaya Mishra
Abstract Scope An indentation based method to characterize the yield locus for steel sheets is developed and implemented. Knoop hardness based indentation experiments have been performed on the surface as well as on the cross sections of an uncoated steel sheet to obtain the corresponding yield locus in the deviatoric and plane-stress plane. Stress ratios following the indenter’s geometry are used to plot the yield locus from indentation data. The stress ratios have been corrected for the material’s anisotropy by an optimization algorithm. Points are then plotted on the plane-stress plane using the corrected stress ratios, the strain increment vectors and indentation hardness data. The parameters for the quadratic Hill’s yield criteria are obtained from the indentation data based curve fitted yield locus and compared with that obtained from the traditional bulk loading tests. The method is designed to be implemented for yield loci characterization of thin, zinc coatings in galvanized steel for multi-scale modelling of friction in deep drawing.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Comparative Study between Elasto-plastic Self-consistent Crystal Plasticity and Anisotropic Yield Function with Distortional Hardening Formulations for Sheet Metal Forming
Accurate Modeling of Experimental Strain-hardening Characteristics for Series of High Strength Steel
An Anisotropic Yield Model Reduced From The Yld2004-18p Function For Metals With Gentle Anisotropy Under Triaxial Loading
An Application of Homogeneous Anisotropic Hardening Model to Earing Predictions of Pre-strained Material
An Experimental Study on Yield Surface Evolution of a Trip-assisted Steel
Applications of a Stress Invariants-based Yield Criterion to DP980 & QP980 Steels
Characterization of Anisotropic Yield Criteria Using an Indentation Based Technique for Steel Sheets
Comparison of Strain-path Indicators for Analysis of Processes in Sheet-bulk Metal Forming
Determination of Strain Dependent Anisotropy in Layer Compression Tests and Resulting Influence on the Yield Locus Modelling
Material Modeling and Forming Limit Analysis of 6016-T4 Aluminum Alloy Sheet
Measurement of Unloading Behavior of AHSS and Its Effect on the Springback Prediction in FEM Simulation
Modeling of Sheet Metal Forming Based on Implicit Embedding of the Elasto-plastic Self-consistent Formulation in Finite Elements: Application to Cup Drawing of AA6022-T4
Modeling of the Differential Hardening of Pure Titanium Sheet and Application to Hole Expansion Forming Simulation
Numerical Integration of Isotropic and Anisotropic Plasticity Models
Plastic Anisotropy from Single Crystal to Multi-phase Steels
Prestraining Effect on Failure Behavior in Hole-Expansion Test of AA6022-T4 Sheet
Rate-dependent Tension and Compression Hardening Behaviors of Ahss for Sheet Metal Forming Simulation
Springback Prediction in Roll Forming using Nonlinear Kinematic and Homogeneous Anisotropic Hardening Models
Study on Hot Deformation Behavior and Microstructure of 5CrNiMoV Steel using Constitutive Modeling and Processing Map
Theory and Application Study of Springback Prediction Accuracy for QP Steel with Different Material Hardening Models

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