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Dr. Raghu Piska

Assistant Professor
Department of Civil Engineering

Computational Mechanics, structural engineering, Phase field modeling of damage, Application of generalized continuum theories, Linear and nonlinear finite element analysis, Laminated composites and Functionally graded materials
Birla Institute of Technology & Science, Pilani
Hyderabad Campus
Jawahar Nagar, Kapra Mandal
Dist.-Medchal-500 078
Telangana, India

Journal papers

  1. Raghu Piska, S. El-Borgi, M. Nafees, A. Rajagopal, J.N. reddy. A thermodynamically consistent phase field model for brittle fracture in graded coatings under thermo-mechanical loading. Theoretical and Applied Fracture Mechanics, 104414, 131, 2024.
  2. Anna Mariya Shajan, Raghu Piska, Sundararajan Natarajan.  Study of mixed-mode fracture in functionally graded material using an adaptive phase-field fracture model. Composite Structures, 117708, 327, 2024 .link
  3. P. Aurojyoti, K. Shiva, P. Raghu, A. Rajagopal. A nonlocal strain gradient model for buckling analysis of laminated composite nano plates using CLPT and TSDT. Meccanica, 2023.
  4. Anna Mariya Shajan, Krishnendu Sivadas, Raghu Piska, Chandu Parimi. Hygrothermal effects on vibration response of  porous FG nanobeams using nonlocal strain gradient theory considering thickness effect. International Journal of Structural Stability and Dynamics, 2440016, 2023.
  5. Kalyan Boyina, Raghu Piska, Sundararajan Natarajan. Nonlocal strain gradient model for thermal buckling analysis of functionally graded nanobeams. Acta Mechanica, 234, 5053-5069, 2023. link
  6. Kalyan Boyina, Raghu Piska. Wave propagation analysis in viscoelastic Timoshenko nano beams under surface and magnetic field effects based on nonlocal strain gradient theory. Applied Mathematics and Computation 439-1275802022. link
  7.  P. Raghu, A. Rajagopal, S.K. Jalan, J.N. Reddy. Modeling of brittle fracture in thick plates subjected to transient dynamic loads using a hybrid phase field model, Meccanica, 2021. link 
  8. A. Rawat, P. Raghu, A. Rajagopal, M. Hossain. Nonlocal plasticity based damage modeling in quasi-brittle materials using an Isogeometric approach.  Engineering Computations, 2021 link
  9. P. Raghu, A. Rajagopal, J.N. Reddy. Thermodynamically consistent variational approach for modeling brittle fracture in thick plates by a hybrid phase field model. ASME, Journal of Applied Mechanics, 87(2):021002, 2020. link
  10.  P. Raghu, A. Rajagopal, J.N. Reddy. Nonlocal transient dynamic analysis of laminated composite plates. Mechanics of Advanced Materials and Structures, 2020. link
  11. Aurojyoti P., Raghu P., Rajagopal A., Reddy, J. N.  An n - sided polygonal finite element for nonlocal nonlinear analysis of plates and laminates. International Journal for Numerical Methods in Engineering, 1-37, 2019. link
  12. K. Shiva, P. Raghu, A. Rajagopal, J.N. Reddy. Nonlocal buckling analysis of laminated composite plates considering surface stress effects. Composite Structures. vol. 226:pp 1-16, 2019. link
  13. P. Raghu, A. Rajagopal, J. N. Reddy. Nonlocal nonlinear finite element analysis of composite plates using TSDT. Composite Structures, vol. 185: 38-50, 2018. link
  14. S. Srividhya, P. Raghu, A. Rajagopal, and J.N. Reddy. Nonlocal nonlinear analysis of functionally graded plates using third-order shear deformation theory. International Journal of Engineering Science, vol. 125:1-22, 2018.link
  15. K. Preethi, P. Raghu, A. Rajagopal, J. N. Reddy. Nonlocal nonlinear bending and free vibration analysis of a rotating laminated nano cantilever beam. Mechanics of Advanced Materials and Structures. vol.25 (5): pp 1-12, 2017.link
  16. P. Raghu, K. Preethi,  A. Rajagopal, J.N. Reddy. Nonlocal third order shear deformation theory for the analysis of laminated composite plates considering surface stress effects. Composite Structures, vol. 139: 13-29, 2016.link

Conference Papers:

 

  1. Kalyan Boyina, Raghu Piska, Sunderarajan Natarajan. A nonlocal strain gradient model for functionally graded nano beams subjected to thermal load. Indian Society of Theoretical Applied Mechanics conference (ISTAM 2023), December 7-9, 2023, NIT Warangal.
  2. Anna Mariya Shajan, Raghu Piska, Sunderarajan Natarajan. Adaptive Phase field simulation of mixed mode crack propagation in brittle material. Indian Society of Theoretical Applied Mechanics conference (ISTAM 2023), December 7-9, 2023, NIT Warangal.
  3. Kalyan Boyina, Raghu Piska. Wave Propagation analysis of nanobeams using nonlocal strain gradient theory. International Conference on Recent Advances in Applied Mathematics (RAAM 2023), June 20-23, 2023, BITS Pilani Dubai campus.
  4. Anna Mariya, Raghu Piska, Chandu Parimi.  Phase field modeling of fracture in functionally graded plates. National Finite Element Developers meet ( NAFED - 07), conducted by ISRO,  IIT Delhi, April 30th, 2023.
  5. Anna Mariya Shajan, Krishnendu Sivadas, Raghu Piska, Chandu Parimi.  Hygrothermal effects on Vibration Response of Porous FG Nanobeams using Nonlocal Strain Gradient Theory considering thickness effect8th International Congress on Computational Mechanics and Simulation (ICCMS),  December 9-11,2022, , IIT Indore.
  6. Krishnendu Sivadas, Anna Mariya Shajan, Raghu Piska, Chandu Parimi, "Nonlinear free vibration response of functionally graded nanobeams under hygrothermal environment based on nonlocal strain gradient theory with thickness effect", 8th International Congress on Computational Mechanics and Simulation, December 9-11,2022, , IIT Indore.
  7. Kalyan Boyina, Raghu Piska. Buckling Analysis of a simply supported beam subjected to thermal loading based on the Strain Gradient Theory, Indian Conference on Applied Mechanics (INCAM),November 11-13, 2022 NIT Jamshedpur.
  8. Raghu Piska, S. EI Borgi, M.Muhammad, A. Rajagopal, J.N. Reddy.  Phase-field model of a surface crack in a graded coating-homogeneous half-plane under thermal loading, October 16-19, SES 2022 Annual Conference, Texas A&M University, College station, Texas, USA.
  9. Raghu Piska. Hybrid Phase field modeling of thick plates under transverse loads, GACM Colloquia, September 21-23, 2022, University of Duisburg-Essen, Germany.
  10. Kalyan Boyina, Raghu Piska. Effect of magnetic field and surface stress effects on wave propagation behaviour of viscoelastic Timoshenko nano beams based on non-local strain gradient theory.  International conference on computational methods in sciences and engineering (CMSE-2022), April 22-24, 2022, BITS Pilani Hyderabad, India.
  11. Mayank YadavChandu Parimi, Raghu Piska. Hygro-thermal analysis of Euler-Bernoulli nano beams under surfac eand magnetic field effect based on nonlocal strain gradient theory. International conference on computational methods in sciences and engineering (CMSE-2022), April 22-24, 2022, BITS Pilani Hyderabad, India.
  12. Kalyan Boyina, Raghu Piska. Wave propagation analysis in viscoelastic Timoshenko nano beam under surface stress effects based on nonlocal strain gradient theory. 2nd International Conference on Computational Sciences: Modelling, Computing and Soft Computing (CSMCS 2022), March 28-30, 2022, Manipal Academy of Higher Education, Manipal, India.
  13. P. Raghu. Hybrid phase field damage model for the analysis of thick plates subjected to transverse loads. International Webinar on contemporary problems on Mechanics and Vibrations (CPVM -2021), May 20-22, BITS Pilani Hyderabad campus, Hyderabad, India.
  14. A. Rajagopal, P. Raghu. Towards nonlocal approaches for modeling damage in quasi brittle materials. International Congress on Computational Mechanics and Simulation ,ICCMS 2019, IIT Mandi, India. 
  15.  P. Raghu, A.Nasedkina, A. Nasedkin, B. Saswata, A. Rajagopal. Nonlocal Nonlinear Analysis of Composites. International Conference on Physics and Mechanics of new materials and their applications,14th-16th,   October 2017, IIIT Jabalpur, India.
  16.  Deepesh Sharma, Raghu Piska, Amirtham Rajagopal. A Novel n-Sided Polygonal Finite Element Approach for Analysis of Isotropic Plates. International Conference on Physics and Mechanics of new materials and their applications,14th -16th,   October 2017, IIIT Jabalpur, India.
  17.  P. Raghu and A. Rajagopal. Nonlinear Finite Element Analysis of laminated composite plates using nonlocal third order shear deformation theory. 20th International Conference on Composite Structures (ICCS 20), 04 - 07th September 2017, Paris, France.
  18.  Raghu P and Rajagopal A. Nonlocal Analysis of laminated plates using third order shear deformation theory considering surface stress effects. 6th International Congress on Computational Mechanics and Simulation, June 27th- July 1st 2016, IIT Bombay, Mumbai, India.
  19.  P. Raghu and A. Rajagopal. Poly FEM for plane elasticity problems. ISTAM Conference,  12-14th December, 2016,  VIT, Vellore, India.
  20. P. Raghu and A. Rajagopal. Analytical solutions for laminated composite plates considering nonlocal and shear deformation effects. 5th International Congress on Computational Mechanics and simulation, 10-13th December ,2014, SERC Chennai, India.