People

Prof. Anirban Patra

Anirban obtained his Bachelors degree in Metallurgical and Materials Engineering from IIT Kharagpur in 2009 and Doctoral degree in Materials Science and Engineering from Georgia Tech (USA) in 2013. Subsequent to his PhD, he worked in the machining industry at Third Wave Systems, Minneapolis (USA). After a postdoctoral stint at Los Alamos National Laboratory (USA), he joined IIT Bombay as a faculty in the Department of Metallurgical Engineering and Materials Science in October 2017.

His research interests lie in the broad areas of computational mechanics, crystal plasticity, and constitutive modeling of structural materials.

He also serves on the Editorial Advisory Board of the International Journal of Plasticity.

Education

Ph.D. in Materials Science and Engineering,Georgia Institute of Technology (USA)
2009-2013

B.Tech. in Metallurgical and Materials Engineering,Indian Institute of Technology Kharagpur
2005-2009

Professional Appointments

Associate Professor, Indian Institute of Technology Bombay
April 2022 - present
Assistant Professor, Indian Institute of Technology Bombay
October 2017 - April 2022

Postdoctoral Research Associate, Los Alamos National Laboratory (USA)
April 2015 - June 2017

Computational Mechanics Engineer, Third Wave Systems Inc. (USA)
January 2014 - April 2015

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Present Members

Gulivindala Gopi

Post-doctoral researcher, Project: Crystal plasticity modeling of elevated temperature deformation

Girish Kulkarni

Ph.D. student, Thesis: Constitutive modeling of thermo-mechanical deformation in alloys for exhaust manifolds

Lopamudra Singh

Ph.D. student, Thesis: Crystal plasticity modeling of deformation in Ti alloys

Alanka Naga Satya Sai Mahesh

Ph.D. student, Thesis: Finite element modeling of thermo-mechanical deformation in the roll bite during hot rolling

Suryakant Priyadarshan

Ph.D. student, Thesis: Crystal plasticity modeling of multi-axial deformation in structural steels

Alumni

Namit Pai

Ph.D. (April 2025), Thesis: Correlating misorientation, segregation and residual strains Thesis (Naik and Rastogi Award for Excellence in PhD Research) (Prime Minister's Research Fellow), Present affiliation: Purdue University

Suketa Chaudhary

Ph.D. (November 2025), Thesis: Mesoscale modeling of deformation and microstructure evolution in Ni-based superalloys Thesis (Prime Minister's Research Fellow), Present affiliation: Ansys

Manikandan Muruganandam

M.S. (Research) (April 2024), Thesis: Influence of crystal orientation on size effects in compression of single crystals: a discrete dislocation plasticity study (co-advisor: P.J. Guruprasad)

Tarakram Ramgopal

Project student (2022-23), Project: Modeling thermo-mechanical deformation of Ti alloys

Gaurav Awasthi

Project student (2022), Project: Phase field modeling of solidification processes

Preet Shah

B.Tech. + M.Tech. Dual Degree (August 2023), Thesis: Machine learning-based prediction of microstructure-property correlations

Sarthak Khandelwal

B.Tech. + M.Tech. Dual Degree (June 2021), Thesis: An assessment of machine learning approaches for predicting the history-dependent deformation of dual phase steels

Adwitiya Rao

B.Tech. + M.Tech. Dual Degree (June 2021), Thesis: Crystal plasticity modeling of twinning-induced deformation in hcp magnesium

Parhitosh Sharma

M.Tech. (June 2021), Thesis: Modeling length scale effects using strain gradient J2 plasticity

Aditya Kumar

M.Tech. (June 2021), Thesis: Modeling fatigue deformation of Ni-based superalloys

Devraj Ranjan

M.Tech. (June 2020), Thesis: Crystal plasticity modeling of the yield behavior of Ni3Al single crystals and Ni-base superalloys.

Hasan Haider

M.Tech. (June 2020), Thesis: Computational design of three phase Mo-Si-B alloys for high temperature structural applications.

Avinash Mishra

M.Tech. (June 2019), Thesis: Modeling fragmentation and steam explosion during melt water interactions.

Saurabh Kumar Singh

M.Tech. (June 2019), Thesis: Modeling the effect of microstructural parameters on the mechanical properties of three phase Mo-Si-B alloys.

Aayush Anurag

B.Tech. (Dec. 2019), Thesis: Modeling the deformation behavior of metallic systems using dislocation density and damage based J2 plasticity constitutive equations.

Research

Research in the Computational Mechanics and Materials Research Group focuses on modeling the deformation behavior of structural materials using crystal plasticity, constitutive modeling and finite element tools, with the aim of developing predictive tools to accelerate the design and manufacturing of engineering components for aerospace and structural applications.

A physically-based modeling approach is adopted to represent the underlying deformation mechanisms across different length scales using constitutive equations and predict microstrucure-sensitive mechanical properties.

Mechanical properties relevant to strength, creep, fracture and fatigue are predicted from simulations and validated with experiments. Prediction of the microstructure evolution during deformation is also emphasized.

We have developed ρ-CP, an open source dislocation density-based crystal plasticity modeling framework. ρ-CP can be used for simulating the anisotropic deformation of crystalline microstructures and structures. Details of the model and its numerical implementation can be found at link1 link2, and the code is available at github.

Our research highlights are summarized here. Details of our work can be found in the published papers.

Nuclear Structural Materials

Modeling the deformation behavior of irradiated ferritic/martensitic steels: Refs. [1], [2], [4], [6], [35]

Modeling irradiation growth and creep in Zr alloys for fuel cladding and spacer grids: Refs. [8], [9]

Modeling the orientation dependent deformation of Zr alloys: Refs. [13]

Aerospace Alloys

Modeling the orientation- and temperature-dependent deformation behavior of Ni-based superalloys for high temperature aerospace applications: Refs. [14], [20], [25], [30], [31], [36]

Modeling the high temperature deformation behavior and microstructure design of MoSiB alloys for potential aerospace applications: Refs. [5], [15]

Modeling the oxygen induced surface hardening of Nb alloys: Refs. [23]

Automotive Alloys

Modeling the microstructure-depedent deformation behavior of Dual Phase steels for automotive applications: Refs. [17], [19], [22]

Thermo-mechanical fatigue of cast iron: Ref. [32]

Additively Manufactured Materials

Modeling process-induced residual stresses in additively manufactured alloys: Refs. [11], [29]

Strain Gradient Plasticity

Strain gradient plasticity modeling of the deformation behavior and microstructure evolution: Refs. [18], [21]

Non-Schmid Yield

Modeling orientation- and temperature-dependent non-Schmid yield behavior of metals and alloys: Refs. [3], [14]

Multiscale Crystal Plasticity

Coupling the Visco Plastic Self Consistent (VPSC) crystal plasticity model with finite elements: Refs. [9], [10], [27], [34]

Accelerated Materials Design and Prediction of Structure-Property Correlations

Accelerated materials design for engineering applications and machine learning based predictions: Refs. [15], [17]

Publications

Journal Publications:

1. Patra, A., McDowell, D.L., “Crystal plasticity-based constitutive modeling of irradiated bcc structures”, Philosophical Magazine, Vol. 92, 2012, pp. 861-887. link

2. Patra, A., McDowell, D.L., “Continuum modeling of localized deformation in irradiated bcc materials”, Journal of Nuclear Materials, Vol. 432, 2013, pp. 414-427. link

3. Patra, A., Zhu, T., McDowell, D.L., “Constitutive equations for modeling non-Schmid effects in single crystal bcc-Fe at low and ambient temperatures”, International Journal of Plasticity, Vol. 59, 2014, pp. 1-14. link

4. Patra, A., McDowell, D.L., “A void nucleation and growth based damage framework to model failure initiation ahead of a sharp notch in irradiated bcc materials”, Journal of the Mechanics and Physics of Solids, Vol. 74, 2015, pp. 111-135. link

5. Patra, A., Priddy, M.W., McDowell, D.L., “Modeling the effects of microstructure on the tensile properties and micro-fracture behavior of Mo-Si-B alloys at elevated temperatures”, Intermetallics, Vol. 64, 2015, pp. 6-17. link

6. Patra, A., McDowell, D.L., “Crystal plasticity investigation of the microstructural factors influencing dislocation channeling in a model irradiated bcc material”, Acta Materialia, Vol. 110, 2016, pp. 364-376. link

7. Wen, W., Capolungo, L., Patra, A., Tomé, C.N., “A physics-based crystallographic modeling framework for describing the thermal creep behavior of Fe-Cr alloys”, Metallurgical and Materials Transactions A, Vol. 48, 2017, pp. 2603-2617. link

8. Patra, A., Tomé, C.N., Golubov, S.I., “Crystal plasticity modeling of irradiation growth in Zircaloy-2”, Philosophical Magazine, Vol. 97, 2017, pp. 2018-2051. link

9. Patra, A., Tomé, C.N., “Finite element simulation of gap opening between the cladding and spacer grid in a fuel rod assembly using crystallographic models of irradiation growth and creep”, Nuclear Engineering and Design, Vol. 315, 2017, pp. 155-169. link

10. Upadhyay, M., Patra, A., Wen, W., Panzner, T., Van Petegem, S., Tomé, C.N., Lebensohn, R., Van Swygenhoven, H., “Mechanical response of stainless steel subjected to biaxial load path changes: cruciform experiments and multiscale modeling”, International Journal of Plasticity, Vol. 108, 2018, pp. 144-168. link

11. Pokharel, R., Patra, A., Brown, D.W., Clausen, B., Vogel, S.C., Gray, G.T., “An analysis of phase stresses in additively manufactured 304L stainless steel using neutron diffraction measurements and crystal plasticity finite element simulations”, International Journal of Plasticity, Vol. 121, 2019, pp. 201-217. link

12. Thool, K.S., Mani, K.V., Srivastava, D., Patra, A., Doherty, R.D., Samajdar, I., “Confirmation of dynamically recrystallized grains in hexagonal Zirconium through local internal friction measurements”, Metallurgical and Materials Transactions A, Vol. 50, 2019, pp. 5000-5014. link

13. Thool, K.S., Patra, A., Fullwood, D., Mani, K.V., Srivastava, D., Samajdar, I., “The role of crystallographic orientations on heterogeneous deformation in a Zirconium alloy: A combined experimental and modeling study”, International Journal of Plasticity, Vol. 133, 2020, 102785. link

14. Ranjan, D., Narayanan, S., Kadau, K., Patra, A., “Crystal plasticity modeling of non-Schmid yield behavior: from Ni3Al single crystals to Ni-based superalloys”, Modelling and Simulation in Materials Science and Engineering, Vol. 29, 2021, 055005. link

15. Ellis, B.D., Haider, H., Priddy, M.W., Patra, A., “Integrated computational design of three-phase Mo-Si-B alloy turbine blade for high-temperature aerospace applications”, Integrating Materials and Manufacturing Innovation, Vol. 10, 2021, pp. 245-264. link

16. Basu, S., Jaya, B.N., Patra, A., Ganguly, S., Dutta, M., Hohenwarter, A., Samajdar, I., “The role of phase hardness differential on the non-uniform elongation of a ferrite-martensite dual phase steel”, Metallurgical and Materials Transactions A, Vol. 52, 2021, pp. 4018-4032. link

17. Khandelwal, S., Basu, S., Patra, A., “A machine learning-based surrogate modeling framework for predicting the history-dependent deformation of dual phase microstructures”, Materials Today Communications, Vol. 29, 2021, 102914. link

18. Pai, N., Prakash, A., Samajdar, I., Patra, A., “Study of grain boundary orientation gradients through combined experiments and strain gradient crystal plasticity modeling”, International Journal of Plasticity, Vol. 156, 2022, 103360. link

19. Basu, S., Patra, A., Jaya, B.N., Ganguly, S., Dutta, M., Samajdar, I., “Study of microstructure - property correlations in dual phase steels for achieving enhanced strength and reduced strain partitioning”, Materialia, Vol. 25, 2022, 101522. link

20. Chaudhary, S., Guruprasad, P.J., Patra, A., “Crystal plasticity constitutive modeling of tensile, creep and cyclic deformation in single crystal Ni-based superalloys”, Mechanics of Materials, Vol. 174, 2022, 104474. link

21. Patra, A., Pai, N., Sharma, P., “Modeling intrinsic size effects using dislocation density-based strain gradient plasticity”, Mechanics Research Communications, Vol. 127, 2023, 104038. link

22. Basu, S., Jaya, B.N., Seekala, H., Phani, P.S., Patra, A., Ganguly, S., Dutta, M., Samajdar, I., “Correlative characterization and plasticity modeling of microscopic strain localizations in a dual phase steel”, Materials Characterization, Vol. 197, 2023, 112704. link

23. Dhole, A., Patra, A., Gupta, R., Gokhale, A., Samajdar, I., “Surface hardening through oxygen diffusion in niobium: the defining role of stress inhomogeneity in tensile embrittlement”, Materials Science and Engineering: A, Vol. 870, 2023, 144883. link

24. Patra, A., Chaudhary, S., Pai, N., Ramgopal, T., Khandelwal, S., Rao, A., McDowell, D.L., “ρ-CP: Open source dislocation density based crystal plasticity framework for simulating temperature- and strain rate-dependent deformation”, Computational Materials Science, Vol. 224, 2023, 112182. link1 link2

25. Chaudhary, S., Pai, N., Appa Rao, G., Alam, Z., Sankarasubramanian, R., Guruprasad, P.J., Samajdar, I., Patra, A., “Competitive role of primary γ ’ precipitates and annealing twins on the heterogeneous deformation of a polycrystalline Ni-based superalloy: crystal plasticity modeling and experiments”, Journal of Alloys and Compounds, Vol. 967, 2023, 171783. link

26. Pai, N., Manda, S., Sudhalkar, B., Syphus, B., Fullwood, D., de Kloe, R., Wright, S., Patra, A., Samajdar, I., “Diffraction-based multiscale residual strain measurements”, Microscopy and Microanalysis, Vol. 30, 2024, pp. 236-252. link

27. Patra, A., Tomé, C.N., “A dislocation density-based crystal plasticity constitutive model: Comparison of VPSC effective medium predictions with ρ-CP finite element predictions”, Modelling and Simulation in Materials Science and Engineering, Vol. 32, 2024, 045014. link

28. Sudhalkar, B., Pai, N., Patra, A., Kapoor, K., Kapoor, R., Agarwal, A., Samajdar, I., “Grain boundary localized damage in hexagonal titanium”, Materials Science and Engineering: A, Vol. 902, 2024, 146608. link

29. Pai, N., Samajdar, I., Patra, A., “Microstructural and mechanistic insights into the tension - compression asymmetry of rapidly solidified Fe-Cr alloys: A phase field and strain gradient plasticity study”, Journal of the Mechanics and Physics of Solids, Vol. 189, 2024, 105695. link1 link2

30. Kumar, S., Patra, A., Sahu, J.K., “Dislocation density-based constitutive model for cyclic deformation and softening of Ni-based superalloys”, Fatigue and Fracture of Engineering Materials and Structures, Vol. 47, 2024, pp. 3264-3284. link

31. Chaudhary, S., Sudhalkar, B., Pai, N., Palit, M., Alam, Z., Sankarasubramanian, R., Samajdar, I., Patra, A., “A crystal plasticity-based micromechanical model for precipitate shearing: Application to cyclic softening of polycrystalline Ni-based superalloys”, International Journal of Fatigue, Vol. 190, 2025, 108582. link

32. Kulkarni, G.J., Patra, A., “Constitutive model for high temperature deformation of SiMo cast iron: application to thermo-mechanical fatigue of exhaust manifolds”, International Journal of Fatigue, Vol. 193, 2025, 108776. link

33. Pai, N., Samajdar, I., Patra, A., “Study of orientation-dependent residual strains during tensile and cyclic deformation of an austenitic stainless steel”, International Journal of Plasticity, Vol. 185, 2025, 104228. link

34. Patra, A., Tomé, C.N., “Multiscale crystal plasticity modeling of deformation in an austenitic stainless steel”, Mechanics Research Communications, Vol. 148, 2025, 104490 (special issue in honor of Ricardo Lebensohn). link

35. Roy, V., Khan, I.A., Patra, A., “Crystal plasticity modeling of hardening and creep in ferritic - martensitic alloys under thermal and irradiation environments”, International Journal of Plasticity, Vol. 195, 2025, 104513. link

36. Chaudhary, S., Patra, A., “Integrated phase field - crystal plasticity framework for simulating heat treatment and deformation of single crystal Ni-based superalloys”, Modelling and Simulation in Materials Science and Engineering, 2025. link

Computational Mechanics and Materials Research Group

Department of Metallurgical Engineering and Materials Science

Indian Institute of Technology Bombay