About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithms Development in Materials Science and Engineering
|
Presentation Title |
Micropolar elastoplasticity using fast Fourier transforms |
Author(s) |
Noah M Francis, Ricardo Lebensohn, Fatemeh Pourahmadian, Remi Dingreville |
On-Site Speaker (Planned) |
Noah M Francis |
Abstract Scope |
This work presents a spectral micromechanical numerical formulation for obtaining the full-field and homogenized response of elastoplastic micropolar composites. Along the way, we derive a closed-form radial-return mapping from thermodynamics-based micropolar elastoplastic constitutive equations to determine the increment of plastic strain necessary to return the generalized stress state to the yield surface, and the implementation of the algorithm is verified using the method of numerically manufactured solutions. Then, size-dependent material response and micro-plasticity are shown as features of micropolar elastoplasticity that may be efficiently simulated in this frame- work. This formulation is quick when compared to other numerical schemes like the finite element method or the material point method, enabling the generation of large datasets in reasonable timeframes. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Mechanical Properties |