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Research Abstracts Online
January - December 2011

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University of Minnesota Twin Cities
College of Science and Engineering
Department of Mechanical Engineering

PI: Traian Dumitrica, Associate Fellow

Computational Nanomechanics From First Principles

These researchers are developing a novel multiscale methodology to derive practical continuum models for nano-objects directly from their first-principles atomistic description. Using nanotubes and nanobelts as test beds, nanomechanical models are established for isotropic one atom thick carbon nanotubes, and anisotropic/piezoelectric few atoms thick SiGe/Si and ZnO nanobelts. During this research, first-principles calculations are performed in order to obtain an unprecedented understanding of the response of graphene, SiGe/Si, and ZnO ultra thin layers to stretching, rolling, and torsion. Discrete element modeling is carried out to validate and test the utility of the created models.

Group Members

Evgeniya Akatyeva, Graduate Student
Abhimanyu Ghosh, Graduate Student
Ilia Nikiforov, Graduate Student
Dong-Bo Zhang, Graduate Student