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Meeting MS&T22: Materials Science & Technology
Symposium Multi Scale Modeling of Microstructure Deformation in Material Processing
Presentation Title Hardness-dependent Plasticity and Damage Initiation Within Simulated Tension-shear Testing of AHSS Resistance Spot Welds
Author(s) Eric Brizes, Nathan Daubenmier, Antonio Ramirez
On-Site Speaker (Planned) Eric Brizes
Abstract Scope Integrated modeling frameworks that simulate automotive spot welding of advanced high-strength steels (AHSS) need to consider local fusion zone and heat-affected zone properties because these regions have significantly different mechanical behaviors than the base material. A recently developed numerical method to predict hardness across the spot welded joint, coupled with scaling of the base material flow stress is evaluated in this work to quantify such a general approach's impact on simulated weld performance testing. Experimental spot welds of various nugget diameters were made on a press-hardenable AHSS and destructively tested in the tension-shear test configuration. Finite element simulation of tension-shear testing was performed using hardness-dependent material plasticity and damage. A comparison of the simulated and experimental tension-shear tests showed good agreement and enabled prediction of the joint peak force and displacement at failure with minimal errors of 10% and 14%, respectively, and correct classification of spot weld fracture mode.
Proceedings Inclusion? Planned: Other (journal publication, etc.; describe below)


Development of the Random Cellular Automata Model of Unconstrained Grain Growth
Hardness-dependent Plasticity and Damage Initiation Within Simulated Tension-shear Testing of AHSS Resistance Spot Welds
Microstructure Based Computational Analysis of Heterogeneous Materials
Multi Scale Modeling of Elastic Properties of FeMnNiCoMo System
New Insights into the Cube Texture Development during Recrystallization of High to Medium SFE FCC Metals
PRISMS-fatigue: A General Framework for Fatigue Analysis in Polycrystalline Metals and Alloys Using the Crystal Plasticity Finite Element Method
Stochastic Model Describing Phase Transformations in Steels Accounting for a Random Character of Nucleation

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