People

Prof. Anirban Patra

Anirban obtained his Bachelors in Metallurgical and Materials Engineering from IIT Kharagpur in 2009 and Doctorate in Materials Science and Engineering from Georgia Tech (USA) in 2013. Subsequent to his PhD, Anirban worked in the machining industry at Third Wave Systems, Minneapolis (USA). He then did a post-doc from Los Alamos National Laboratory (USA), before joining 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

Current Students

Namit Pai

Ph.D. student, Prime Minister's Research Fellow, Project: Development of strain gradient crystal plasticity models for metallic systems

Suketa Chaudhary

Ph.D. student, Prime Minister's Research Fellow, Project: Crystal plasticity modeling of the deformation behavior of Ni-based superalloys

Manikandan Muruganandam

Ph.D. student, Prime Minister's Research Fellow, Project: Coupling discrete dislocation dynamics with finite elements for concurrent simulation of polycrystalline ensembles

Girish Kulkarni

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

Lopamudra Singh

Ph.D. student, Project: Modeling processing and thermo-mechanical deformation of additively manufactured alloys

Alanka Naga Satya Sai Mahesh

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

Former Students

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 nuclear and aerospace 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]

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]

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]


Additively Manufactured Materials

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


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]


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, 2024, ozae011. 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

Conference Presentations/Proceedings:

Patra, A.*, McDowell, D.L., “Crystal plasticity modeling of radiation damage in bcc structural materials”, ANS Annual Meeting, Hollywood, FL, June 26-30, 2011.

Patra, A.*, McDowell, D.L., “Modeling localized deformation in irradiated bcc metals using continuum crystal plasticity”, 49th Annual Technical Meeting of the Society of Engineering Science, Atlanta, GA, October 10-12, 2012.

Patra, A.*, McDowell, D.L., “Crystal plasticity modeling of localized deformation in irradiated bcc metals”, MRS Fall Meeting, Boston, MA, November 25-30, 2012.

Patra, A., McDowell, D.L.*, “Mesoscopic modeling of dislocation-defect interactions and flow localization in irradiated bcc metals”, TMS Annual Meeting, San Antonio, TX, March 3-7, 2013.

Cochran, J.*, Daloz, W., Marshall, P., McDowell, D.L., Patra, A., Wedding, C., Strbik, O., “Silicon and boron containing composites of molybdenum alloyed with manganese”, MS&T ′13, Montreal, Canada, October 27-31, 2013.

Patra, A.*, Zhu, T., McDowell, D.L., “Constitutive equations for dislocation core spreading in bcc-Fe accounting for dislocation-dislocation interactions and finite temperature effects”, MS&T ′13, Montreal, Canada, October 27-31, 2013.

Tomé, C.N., Patra, A.*,', Golubov, S.I., Barashev, A.V., “Modeling radiation-induced deformation of Zr-based polycrystals with novel mechanisms of radiation growth and creep”, 18th International Symposium on Zirconium in the Nuclear Industry, Hilton Head, SC, May 15-19, 2016.

Patra, A.*,', McDowell, D.L., “Analysis of dislocation channeling in irradiated bcc materials using a crystal plasticity finite element framework”, NuMat 2016, Montpellier, France, November 7-11, 2016.

Patra, A.*, Tomé, C.N., “Coupled crystal plasticity-finite element modeling of irradiation growth and creep in Zircaloy-2”, NuMat 2016, Montpellier, France, November 7-11, 2016.

Patra, A.*, Tomé, C.N., “Microstructure-based modeling of irradiation growth in zirconium alloys using crystal plasticity”, International Workshop on Mechanics of Energy Materials 2018, Indian Institute of Technology Madras, Chennai, November 19-22, 2018 (invited).

Patra, A.*, Pokharel, R., Brown, D., Clausen, B., Vogel, S., Gray, G.T., “Residual stress analysis in additively manufactured 304L steel using combined experiments and modeling”, Microstructural Engineering 2018-19, Indian Institute of Technology Kanpur, Kanpur, March 30-31, 2019 (invited).

Ranjan, D., Narayanan, S., Patra, A.*, “Crystal plasticity modeling of the yield anomalies of Ni3Al single crystals”, International Conference on Advanced Materials and Processes for Defense Applications ADMAT 2019, Hyderabad, September 23-25, 2019 (invited).

Thool, K., Patra, A.*, Fullwood, D., Samajdar, I., “Combined experiments and modeling to assess the residual strains in an annealed Zr alloy during interrupted tensile testing”, International Conference on Plasticity Damage and Fracture 2020, Riviera Maya, Mexico, January 3-9, 2020 (invited).

Ranjan, D., Patra, A.*, “Modeling the temperature-dependent non-Schmid yield behavior of Ni3Al crystals”, International Conference on Plasticity Damage and Fracture 2020, Riviera Maya, Mexico, January 3-9, 2020 (invited).

Ranjan, D.*, Narayanan, S., Kadau, K., Patra, A., “Crystal plasticity modeling of the yield behavior of Ni3Al crystals and Ni-base superalloys”, 14th WCCM and ECCOMAS Congress 2020, Virtual Conference, January 11-15, 2021.

Basu, S.*, Patra, A., Jaya, B.N., Ganguly, S., Dutta, M., Samajdar, I., “A computational modeling framework for studying the microstructural factors inducing strain partitioning in Dual Phase steels”, 14th WCCM and ECCOMAS Congress 2020, Virtual Conference, January 11-15, 2021.

Chaudhary, S.*, Guruprasad, P.J., Patra, A., “Crystal plasticity modeling of creep and fatigue deformation in Ni-based superalloy single crystals”, 8th International Conference on Creep, Fatigue and Creep-Fatigue Interaction (CF-8), Virtual Conference, IGCAR, Kalpakkam, August 24-27, 2021.

Pai, N.*, Prakash, A., Samajdar, I., Patra, A., “Study of near boundary gradient zones in an aluminum alloy using strain gradient crystal plasticity and experiments”, Virtual Presentation, MS&T ′21, Columbus, USA, October 17-21, 2021.

Pai, N.*, Samajdar, I., Patra, A., “Study of the effect of gradient plasticity on the deformation of metallic systems via combined modeling and experiments”, 24th International Conference on Computer Methods in Mechanics (CMM) & 42nd Solid Mechanics Conference (SolMech), Swinoujscie, Poland, September 5-8, 2022.

Chaudhary, S.*, Guruprasad, P.J., Patra, A., “Crystal plasticity constitutive modeling of thermo- mechanical deformation in Ni-based superalloy single crystals”, 4th European Symposium on Superalloys and their Applications (EuroSuperalloys 2022), Bamberg, Germany, September 18-22, 2022.

Chaudhary, S., Pai, N., Samajdar, I., Guruprasad, P.J., Patra, A.*, “Crystal plasticity constitutive modeling of thermomechanical deformation in Ni-based superalloys”, Advances in Materials & Processing: Challenges & Opportunities (AMPCO ‘22), Indian Institute of Technology Roorkee, October 17-19, 2022 (invited).

Chaudhary, S.*, Pai, N., Appa Rao, G., Alam, Z., Sankarasubramanian, R., Guruprasad, P.J., Samajdar, I., Patra, A., “Experimentally informed crystal plasticity model for predicting the deformation of a polycrystalline Ni-based superalloy”, Indian Institute of Metals - Annual Technical Meeting (IIM-ATM) 2022, Hyderabad, November 14-16, 2022.

Pai, N., Samajdar, I., Patra, A.*, “Modeling grain-scale deformation phenomena using strain gradient plasticity”, 8th Asian Conference on Mechanics of Functional Materials and Structures (ACMFMS), Indian Institute of Technology Guwahati, December 11-14, 2022 (invited).

Pai, N., Samajdar, I., Patra, A.*, “Modeling misorientation development and solute segregation during deformation and heat treatment in Al alloys: strain gradient crystal plasticity and phase field study”, Platinum Jubilee Conference on Perspectives in Materials Research, Indian Institute of Science, Bangalore, December 21-23, 2022 (invited).

Pai, N.*, Samajdar, I., Patra, A., “Insights into the tension-compression asymmetry of additively manufactured alloys: a combined phase field-strain gradient plasticity study”, 29th International Conference on Processing and Fabrication of Advanced Materials, Indian Institute of Technology Tirupati, September 6-8, 2023.

Chaudhary, S.*, Pai, N., Sudhalkar, B., Alam, Z., Sankarasubramanian, R., Guruprasad, P.J., Samajdar, I., Patra, A., “Crystal plasticity model for cyclic softening of a polycrystalline Ni-based superalloy”, 29th International Conference on Processing and Fabrication of Advanced Materials, Indian Institute of Technology Tirupati, September 6-8, 2023.

Patra, A.*, “Leveraging high performance computing for crystal plasticity simulations using ρ-CP”, Symposium on Materials and Computational Chemistry Applications on HPC Platform, C-DAC, Pune, October 12-13, 2023 (invited).

Pai, N., Samajdar, I., Patra, A.*, “Coupled phase field and strain gradient plasticity model for studying the microstructural origins of tension-compression asymmetry in rapidly solidified microstructures”, International Conference on Plasticity, Damage and Fracture 2024, Panama City, Panama, January 3-8, 2024 (invited keynote).

Singh, L.*, Chaudhary, S., Tomé, C.N., Patra, A., “A dislocation density-based crystal plasticity constitutive model for the anisotropic deformation behavior of CP-Titanium”, National Symposium of Research Scholars, IIT Kanpur, March 9-10, 2024.

* indicates speaker, ' indicates poster presentation.

Openings

We are looking for motivated researchers interested in working in multidisciplinary areas of computational materials, mechanics and design.

Requirements:

1. An ideal candidate should have a background in continuum mechanics and finite element modeling.

2. Programming skills in C++/Fortran/MATLAB are desired, along with a familiarity with Linux.

3. Experience in crystal plasticity and constitutive modeling is desired, but not necessary.

Candidates with Materials/ Physics/ Mechanical/ Aerospace Engineering background are welcome to apply.

Please email your resume to: anirbanpatra [at] iitb [dot] ac [dot] in

If you are in the vicinity, please feel free to schedule an appointment and drop by Prof. Patra's office in F11, 1st floor, Old CSE Building, IIT Bombay.

Get In Touch.

Address and Phone

Anirban Patra
F11, 1st Floor, Old CSE Building
IIT Bombay, Mumbai - 400076
+91-22-25767622
anirbanpatra [at] iitb [dot] ac [dot] in