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Dr. Ravi Kiran Yellavajjala
Assistant Professor

Department of Civil and Environmental Engineering
Office: CIE 201N
Telephone: (701) 231-7878
Fax: (701) 231-6185
Email: ravi.kiran@ndsu.edu

Personal Webpage:www.ndsu-dams.com

Research Interests

Dr Yellavajjala's core expertise lies in the field of experimental and theoretical mechanics. Specifically, He is interested in microstructure and micromechanics based modeling of damage in engineering materials and structures. His other interests include constitutive modeling of materials, numerical methods, sensitivity analyses of structural response, forensic failure analysis and advanced visualization techniques.

Educational Background

PhD in Civil engineering (structures), University of Notre Dame, IN – 2014.
MS in Civil engineering (minor in composites), Indian Institute of Technology Madras, India – 2009
BS in Civil engineering, S.R.K.R. engineering college, Andhra University, India – 2007

Recent Publications

J1) Kiran R., Lei, L., and Khandelwal K. (2016). “A complex perturbation method for the sensitivity analysis of nonlinear truss structures”, (accepted for ASCE Journal of Structural Engineering).
J2) Kiran R., and Khandelwal K. (2015). “A coupled microvoid elongation and dilation based ductile fracture model for structural steels”, Engineering Fracture Mechanics, V. 145, P. 15-42.
J3) Kiran R., Lei L., and Khandelwal K. (2015). “Performance of cubic convergent methods for implementing nonlinear constitutive models”, Computers & Structures, V. 156, P. 83-100.
J4) Kiran R., and Khandelwal K. (2015). “Automated implementation of anisotropic hyperelastic constitutive models”, Computational Mechanics, V. 55, issue 1, P. 229-248.  
J5) Kiran R., and Khandelwal K. (2015). “A micromechanical cyclic void growth model for ultra-low cycle fatigue”, International Journal of Fatigue, V.70, P.24-37.
J6) Kiran R., and Khandelwal K. (2014). “Triaxiality and Lode parameter dependent ductile fracture criterion”, Engineering Fracture Mechanics, V.128, P.121-138.
J7) Kiran R., and Khandelwal K. (2014). “Numerically approximated Cauchy integral (NACI) for implementation of constitutive models”, Finite Elements in Analysis and Design, V. 89, P. 33-51.
J8) Kiran R., and Khandelwal K. (2014). “Complex step derivative approximation for numerical evaluation of tangent moduli”, Computers & Structures, V.140, P. 1-13.
J9) Kiran R., and Genesio G. (2014). “A case study on pre 1970’s constructed concrete exterior beam-column joints”, Case Studies in Structural Engineering, V.1, P. 20-25.
J10) Kiran R., and Khandelwal K. (2014). "Fast-to-compute weakly coupled ductile fracture model for structural steels”, ASCE Journal of Structural Engineering, V.140(6), P. 04014018.
J11) Kiran R., and Khandelwal K. (2014). "Gurson model parameters for ductile fracture simulation in ASTM A992 steels”, Fatigue & Fracture of Engineering Materials & Structures, V. 37(2), P. 171-183.
J12) Kiran R., and Khandelwal K. (2013). "Experimental studies and models for ductile fracture in ASTM A992 steels at high triaxiality”, ASCE Journal of Structural Engineering, V. 140(2), P. 1-11.
J13) Kiran R., and Khandelwal K. (2013). "A micromechanical model for ductile fracture prediction in ASTM A992 steels”, Engineering Fracture Mechanics, V. 102, P. 101-117.