J.N. Reddy

Oscar S. Wyatt Jr. Chair

Regents Professor

Distinguished Professor

NAE Member

J.N. Reddy

Office: MEOB 401
Phone: 979.862.2417
Fax: 979.845.3081
Email: jnreddy@tamu.edu

Research Webpage
Google Scholar Profile

Research Interests

Dr. Reddy, the Oscar S Wyatt Endowed Chair Professor, Distinguished Professor, and Regents Professor of Mechanical Engineering at Texas A&M University. A highly-cited researcher, author of 20 textbooks and over 550 journal papers, and a leader in the applied mechanics field for more than 40 years, Reddy has been a member of Texas A&M faculty since 1992.

Reddy is known worldwide for his significant contributions to the field of applied mechanics through the authorship of widely used textbooks on the linear and nonlinear finite element analysis, variational methods, composite materials and structures, applied functional analysis, and continuum mechanics. His pioneering works on the development of shear deformation theories (that bear his name in the literature as the Reddy third-order plate theory and the Reddy layerwise theory) have had a major impact and have led to new research developments and applications.

His earlier research focused primarily on mathematics of finite elements, variational principles of mechanics, shear deformation and layerwise theories  of laminated composite plates and shells, analysis of bimodular materials, modeling of geological and geophysical phenomena, penalty finite elements for flows of viscous incompressible fluids, least-squares finite element models of fluid flows and solid continua. Some of the ideas on shear deformation theories and penalty finite element models of fluid flows have been implemented into commercial finite element computer programs like ABAQUS, NISA, and HyperXtrude.

In recent years, Reddy's research deals with 7- and 12-parameter shell theories, nonlocal and non-classical continuum mechanics problems, and problems involving couple stresses (i,e, the development of nonlocal beam and plate theories using the ideas of Eringen, Mindlin, Koiter, and others), surface stress effects, discrete fracture and flow, micropolar cohesive damage, and continuum plasticity of metals from considerations of non-equilibrium thermodynamics - as they appear in blood flow, bones, and materials with hard inclusions and phases

Awards & Honors

  • Foreign fellow, The Canadian Academy of Engineering, 2017.
  • The John von Neumann Medal, The US Association for Computational Mechanics, 2017.
  • ASME Medal, The American Society of Mechanical Engineers, 2016.
  • Thomson Reuters IP and Science’s Web of Science Highly Cited Researchers - Most Influential Minds, 2016.
  • Prager Medal, Society of Engineering Science, 2016.
  • Inducted into the Hall of Fame of the College of Engineering, Technology, and Architecture at Oklahoma State University, 2015.
  • Foreign Fellow, the Indian National Academy of Engineering, September 2015.
  • Member, US National Academy of Engineering (NAE), Washington, DC, 2015.

Education

  • Post Doctoral Fellow, Texas Institute for Computational Mechanics, University of Texas at Austin, 1973-1974.
  • Ph.D., Engineering Mechanics (Advisor: Dr. J. T. Oden), University of Alabama in Huntsville, Alabama, 1973.
  • M.S., Mechanical Engineering, Oklahoma State University, Stillwater, Oklahoma, 1970.
  • B.E. (5yr Course), Mechanical Engineering, Osmania University, Hyderabad, Andhra Pradesh, India, 1968.

Selected Publications

Archana Arbind, J.N. Reddy, and A.R. Srinivasa, "Nonlinear analysis of beams with rotation gradient dependent potential energy for constrained micro-rotation," European Journal of Mechanics, A/Solids, Vol. 65, pp. 178-194, 2017.

Saikat Sarkar, Mohsen Nowruzpour, J.N. Reddy, and Arun Srinivasa, “A discrete Lagrangian based direct approach to macroscopic modelling,” Journal of Mechanics and Physics of Solids, Vol. 98, pp. 172-180, Jan 2017.

Parisa Khodabakhshi, J.N. Reddy, and Arun Srinivasa, “GraFEA: A graph based finite element approach for study of damage and fracture in brittle materials,” Meccanica (50th Anniversary Volume), Vol. 51, No. 12, 3129-3147, Dec 2016.

Namhee Kim and J.N. Reddy, “A spectral/hp least-squares finite element analysis of the Carreau-Yasuda fluids,” International Journal for Numerical Methods in Fluids, Vol. 82 No. 9, pp. 541-566, Nov 2016.

Miguel E. Gutierrez Rivera, J.N. Reddy, and Marco Amabili, “A new twelve-parameter spectral/hp shell finite element for large deformation analysis of composite shells,” Composite Structures, Vol. 151, pp. 183-196, Sep 2016.