About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
Inferring Dynamic Mechanical Properties of Materials Using a Combination of High-rate Machining Experiments and Simulations |
Author(s) |
Umair Bin Asim, Michael J Demkowicz, Ankit Srivastava |
On-Site Speaker (Planned) |
Umair Bin Asim |
Abstract Scope |
We demonstrate a method for inferring high strain rate deformation response of materials from high-speed cutting. The approach compares experiments and finite element simulations for a specified set of input cutting parameters, including cutting velocity, depth of cut, rake angle, and tool-tip radius. It then optimizes material constitutive parameters to minimize the discrepancy in measured response variables, such as cutting and thrust forces at the tool and the chip morphology. The mechanical behavior of material is represented using isotropic elasticity as well as Johnson-Cook plasticity and damage models, which take into the account the effect of strain rate and thermal softening encountered during high-speed cutting. The proposed approach enables rapid assessment of material deformation at strain rates of 10 s-1 to 105 s-1 without recourse to resource intensive procedures, such as split Hopkinson pressure bar testing. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Modeling and Simulation |