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
Curriculum Vitae
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

  • 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.
  • The IACM O.C. Zienkiewicz Award from the International Association for Computational Mechanics, 2014.

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

Feifei Cheng, Sun-Myung Kim, and J.N. Reddy, “Computational modeling of the plastic-damage behavior of porous MAX phase with aligned ellipsoid-like pores under uniaxial compression,” International Journal of Solids and Structures, Vol. 63, pp. 121-138, 2015.

G. S. Payette and J.N. Reddy, “A seven-parameter spectral/hp finite element formulation for isotropic, laminated composite and functionally graded shell structures,” Computer Methods in Applied Mechanics and Engineering, Vol. 278, pp. 664-704, 2014.

A. Srinivasa and J.N. Reddy, “A model for a constrained, finitely deforming, elastic solid with rotation gradient dependent strain energy, and its specialization to von Karman plates and beams,” Journal of Physics and Mechanics of Solids, Vol. 61, No. 3, pp. 873–885, March 2013.

Cesar Y. Kiyono, Emilio C. N. Silva, and J.N. Reddy, “Design of laminated piezocomposite shell transducers with arbitrary fiber orientation using topology optimization approach,” International Journal for Numerical Methods in Engineering, Vol. 90, No. 12, pp. 1452–1484, 2012.

G. S. Payette and J.N. Reddy, “On the roles of minimization and linearization in least squares finite element models of nonlinear boundary-value problems,” Journal of Computational Physics, Vol. 230, No. 9, pp. 3589-3613, 2011, doi:10.1016/j.jcp.2011.02.002.