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Postdoctoral Researcher - Computational Modeling

Postdoctoral Researcher - Computational Modeling

The University of Delaware Center for Composite Materials (UD-CCM) is an internationally recognized center of excellence for interdisciplinary research, education, and technology transfer providing world- class research to both industry and government sponsors.
The UHMWPE fibers, such as Dyneema®, have hierarchical architecture and the load transfer mechanisms at different length scales are still not well understood. In the Army Research Laboratory sponsored ‘Physics of Soldier Protection’ program, we plan to design and manufacture high performance UHMWPE fibers and their composites with optimized structures across length scales. This program involves modeling at nano-micro-meso scale, manufacturing the UHMWPE fiber/composites and experimental characterization. Computational micromechanics and meso-mechanics models will be developed to understand the non-linear material behavior at fiber level up to laminate mechanics level. This will require developing model validating experiments and material characterization experiments.

We are seeking a postdoctoral researcher to conduct nano-mechanical to micro-mechanical modeling of UHMWPE fibers and [0/90] sub-laminates in predicting the continuum properties for unidirectional and [0/90] sub-laminates. Conduct meso-mechanical and continuum modeling of transverse impact on soft- ballistic and hard-ballistic armor pack. Conduct parametric simulations in LS-DYNA using a usermat umat41. Validate all computational predictions with experimental measurements.

Major Responsibilities
  • Computational modeling, analyses, and design of composite based systems.
  • Finite element (FE) analysis of transverse impact on continuum body armor systems.
  • Write automated data analysis software using PYTHON and MATLAB.
  • Support other team members who conducts molecular simulations.
  • Conduct literature review in identifying the state of the art in modeling and identify new research needs.
  • Present work including theory, approach, results, and conclusions at ARL review meetings; report findings via government publications (technical reports), peer-reviewed publications, and conference presentations.
  • Perform miscellaneous job-related duties as assigned.

Qualifications
  • Ph.D. in Mechanical Engineering, Aerospace Engineering or Materials Science and Engineering.
  • Experience in computational modeling using advanced finite element packages e.g., LS-DYNA, ANSYS, ABAQUS, HyperMesh, FEMAP, Cubit, code development using FORTRAN, MATLAB, and PYTHON, solid modeling with SOLID WORKS.
  • Experience in mechanical characterization, capability in designing new experimental methods, and conducting experiments.
  • Possess a solid understanding of the basic principles of structural mechanics and be able to apply these principles to composite structures.
  • Proficient in programing languages (Matlab, Python etc.) to develop script for data analysis.
  • Sound knowledge in solid mechanics and impact mechanics.
  • Ability to write high quality journal papers by planning and conducting systematic analysis and summarizing and organizing simulations data.
  • Demonstrates an understanding and consideration of the differing needs and concerns of individuals with varying identities, cultures, and backgrounds.
  • Committed to fostering a workplace culture of belonging, where diversity is celebrated, and equity is a core value.

12/08/21 Update: The Executive Order from the federal government requiring COVID-19 vaccine for all UD employees has halted as decisions play out in the federal courts. All coronavirus health and safety protocols, including weekly testing for those who are not vaccinated, remain in place.

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