Timothy Tresierras
Timothy N. Tresierras, Ph.D., P.E.
Senior Engineer
Mechanical Engineering
  • Miami

Dr. Tresierras' areas of expertise include mechanical engineering, electro-mechanical systems, materials science, vibrational and acoustic analysis, and prototype design. His expertise includes: impacts, collisions, load and vibrational analysis on structures, the mechanical behavior of materials (e.g., stress analysis on parts, fatigue and wear), and the study of systems under the action of external forces (e.g., gear trains, appliances/machines, power transmission). He also has experience in electro-mechanical systems with practical skills in basic analog and digital circuit analysis. Dr. Tresierras is certified as a SolidWorks associate, for use in computer aided part design and rapid prototyping.

During his time with Exponent, Dr. Tresierras has worked principally as an engineering consultant to companies needing design or failure analysis support for products. He has developed expertise in the area of acoustic and vibrational analysis (e.g., measuring noise as it relates to human hearing). Dr. Tresierras is an Adjunct Professor at the University of Miami, Mechanical Engineering department. 

Dr. Tresierras recently worked in Afghanistan for 5 months with the U.S. Army’s Rapid Equipping Force (REF), whose mission is to harness current and emerging technologies to provide immediate solutions to the urgent challenges of the U.S. Army forces. As a prototype engineer, Dr. Tresierras worked one-on-one with field soldiers and high ranking officers, solving complex multidisciplinary problems, utilizing technologies in: radio frequency (RF) transmission; welding and fabrication; 3D-printing, automated milling (CNC); computer networking; video/audio surveillance; programmable microcontrollers; batteries and basic circuitry. 

Dr. Tresierras completed his Ph.D. at the University of California, Berkeley, where his research focused on creating a modified theory of elastic rods. Prior to joining Exponent, Dr. Tresierras was an instructor for a machine and manufacturing design course at UC Berkeley.  

During his undergraduate and graduate study Dr. Tresierras served as a reserve specialist for community associations, where he developed budgets and replacement schedules for common area mechanical and structural components (e.g., HVAC, pumps, pool, and spa heaters).

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering, University of California, Berkeley, 2009
  • M.S., Mechanical Engineering, University of California, Berkeley, 2006
  • B.S., Mechanical Engineering, California State University, Northridge, 2003, honors
  • Certificate & Badge of Wartime Service (Operation Enduring Freedom, Afghanistan), presented by Lieutenant Colonel Keith Matiskella, U.S. Army, 2014

    Alfred P. Sloan Fellowship, 2005–2009

    California State University Presidential Scholar, 1997–2003

    Tau Beta Pi

LICENSES & CERTIFICATIONS

Licensed Professional Engineer, California, #35763

Licensed Professional Engineer, Florida, #74970

Certified SolidWorks Associate (CSWA), #C-8ER74RU47H

Publications

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.

Presentations

Tresierras TN. On continuum mechanics and rigid-body dynamics. National Technical University in Quito, Ecuador, 2009. 

Tresierras TN. On variational principles. Technischen Universität Darmstadt, Germany, 2006.

Professional Affiliations

American Society of Mechanical Engineers—ASME

ASME Paper Reviewer

Society of Automotive Engineers—SAE International

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering, University of California, Berkeley, 2009
  • M.S., Mechanical Engineering, University of California, Berkeley, 2006
  • B.S., Mechanical Engineering, California State University, Northridge, 2003, honors
  • Certificate & Badge of Wartime Service (Operation Enduring Freedom, Afghanistan), presented by Lieutenant Colonel Keith Matiskella, U.S. Army, 2014

    Alfred P. Sloan Fellowship, 2005–2009

    California State University Presidential Scholar, 1997–2003

    Tau Beta Pi

LICENSES & CERTIFICATIONS

Licensed Professional Engineer, California, #35763

Licensed Professional Engineer, Florida, #74970

Certified SolidWorks Associate (CSWA), #C-8ER74RU47H