
Dr. Tresierras' areas of expertise encompass non-linear rod theories, continuum mechanics, and rigid-body (Lagrangian) dynamics. He also has significant experience in automatic controls integrated into eletro-mechanical and pneumatic systems, and experience in rotational systems in mechanics and navigation. His practical skills include basic analog and digital circuit analysis, an extensive knowledge of various CAD related software, including certification as a Solidworks associate, for use in part design and rapid prototyping, and graphical techniques for use in spatial reasoning.
Prior to joining Exponent, Dr Tresierras attended the University of California, Berkeley, where his research focused on the development of a system of modeling growth and branching through the use of a mechanical based rod theory (modified Euler’s elastica) and simple control laws. Dr. Tresierras was also the instructor for the introductory design course at Berkeley.
During his undergraduate and graduate study Dr. Tresierras worked in both Northern California and Southern California as a reserve specialist for community associations, where he developed reserves budgets and replacement schedules for common area mechanical and structural components.

O’Reilly OM, Tresierras TN. On the evolution of intrinsic curvature in rod-based models of growth in long slender plant stems. International Journal of Solids and Structures 2011; 48:1239–1247.
O’Reilly OM, Tresierras TN. On the static equilibria of branched elastic rods. International Journal of Engineering Science 2011; 49:212–227.
O’Reilly OM, Tresierras TN. An evolution equation for plant growth. Proceedings, ASME Summer Bioengineering Conference, 2009.
O’Reilly OM, Tresierras TN, Senan NAF. Modeling the growth and branching of plants: A simple rod-based model. Journal of the Mechanics and Physics of Solids 2008; 5610:3021–3036.
Presentations
Tresierras T. On continuum mechanics and rigid-body dynamics. National Technical University in Quito, Ecuador, 2009.
Tresierras T. On variational principles. Technischen Universität Darmstadt, Germany, 2006.