Graduate Research Assistant at UTK

Jan 2022 - Current

Knoxville, TN

PI & Advisor: Assoc. Prof. Reza Abedi

PI: Assoc. Prof. Alireza V. Amirkhizi (UMass Lowell)

Main research project: Micro-Structured Materials for Effective Impact Energy Management

Funding Agency: Army Research Laboratory

Objective: Conceptual design, numerical analysis, and experimental verification of the utility of micro-structured media for effective engagement of ballistic energy during impact and blast events.

Responsibilities: High-speed impact simulations of the highly nonlinear media.

Tools: LS-DYNA, MATLAB, Python, deal.ii, C++, and Linux.

Contributions

1. Nonlinear material modeling and simulations

High-speed impact and blast simulations for ceramic materials, validation, and verification studies.
UMAT modeling in LS-DYNA for an enhanced material model for ceramics based on Johnson-Holmquist 2 model.

2. Linear finite element simulations

Linear analysis of metamaterial designs in the time domain for understanding of the frequency-dependent nature of the system.
Arbitrary Lagrangian Eulerian simulations for understanding fluid-microstructure interactions.
Higher order spatial mode analysis using in-house Space-time Discontinuous Galerkin code (Webpage).

3. High-performance computing

Compiling and benchmarking of commercial, open-source and in-house software.
Using deal.ii: Linear elastic, Neo-Hookian, and J2 plasticity constitutive models are implemented (course project). deal.ii code