Justin Porter

  • Program Year: 3
  • Academic Institution: Rice University
  • Field of Study: Mechanical Engineering
  • Academic Advisor: Matthew Brake
  • Practicum(s): Practicum Not Yet Completed
  • Degree(s):
    B.S. Mechanical Engineering, University of Oklahoma, 2019

Summary of Research

Bolted joints introduce significant uncertainty into the nonlinear dynamics of structures. Joints are required because it is not feasible to build large or complicated systems from a single piece of material. My research seeks to improve computational models of bolted structures that can then be used to improve designs of jointed connections. Better models and joint designs will reduce the current $2 billion annual cost of vibration testing of structures.


Journal Articles:
J. H. Porter, N. N. Balaji, C. R. Little & M. R. W. Brake (2021) A Quantitative Assessment of the Model Form Error of Friction Models Across Different Interface Discretizations for Jointed Structures, Mechanical Systems and Signal Processing, DOI: 10.1016/j.ymssp.2021.108163.

J. H. Porter & P. S. Harvey (2019) Imposing a Node at a Desired Location Along a Beam Under Harmonic Base Excitation: Theory and Experiment, Journal of Vibrations and Acoustics, DOI: 10.1115/1.4044186

J. H. Porter, T. M. Cain, S. L. Fox & P. S. Harvey (2018) Influence of infill properties on flexural rigidity of 3D-printed structural members, Virtual and Physical Prototyping, DOI: 10.1080/17452759.2018.1537064

Conference Presentations:
J. H. Porter, N. N. Balaji & M. R. W. Brake, "A rough contact modeling framework for arbitrarily varying normal pressure" presented at Tribomechadynamics, August 3-5, 2021.

J. H. Porter, N. N. Balaji & M. R. W. Brake, "A non-Masing microslip rough contact modeling framework for spatially and cyclically varying normal pressure" presented at IMAC-XXXIX, February 8-11, 2021.

J. H. Porter, C. R. Little, N. N. Balaji & M. R. W. Brake, "An assessment of the applicability and epistemic uncertainties inherent to different classes of friction models for modeling bolted interfaces" presented at IMAC-XXXVIII, February 10-13, 2020.

T. F. Schoenherr, J. K. Lee & J. H. Porter, "Using modal projection error to predict success of a six degree of freedom Shaker Test" presented at IMAC-XXXVIII, February 10-13, 2020

J. H. Porter, T. M. Cain & P. S. Harvey, "Characterizing and testing 3D printed structures" presented at the University of Oklahoma Undergraduate Research Day, April 7, 2018.

Masters Thesis:
J. H. Porter, Constitutive modeling of friction in bolted connections, Masters Thesis, Houston, Texas: Rice University, 2021.


-University of Oklahoma, Honors College, Graduated Summa cum Laude (Spring 2019)
-University of Oklahoma, President's Honor Roll (Fall 2015-Spring 2019)
-University of Oklahoma, Undergraduate Research Opportunity Program Grant (Spring 2018)
-University of Oklahoma, National Merit Scholar (Fall 2015-Spring 2019)
-Lockheed Martin Corporate National Merit Scholarship (Fall 2015-Spring 2019)
-Tau Beta Pi (Initiated April 2017)