Civil Engineering Department

Multiscale Mechanics of Composites
Topology Optimization
3D Printing of Concrete
Application of Machine Learning and Reduced Order Modelling in Multiscale Mechanics
Physics Based Modelling of Ductile and Brittle damage
Peridynamics and Generalized Continuum Modelling

Multiscale Mechanics of Composites

Topology Optimization

3D Printing of Concrete

Application of Machine Learning and Reduced Order Modelling in Multiscale Mechanics

Physics Based Modelling of Ductile and Brittle damage

Peridynamics and Generalized Continuum Modelling

Award	Awarding Organisation	Year
Prof. N. S. Govinda Rao Gold Medal for the Best Ph.D Thesis in Civil Engineering	Indian Institute of Science, Bangalore	2019
University Gold Medal for standing first in Bachelor of Civil Engineering	Jadavpur University, Kolkata	2010
Mamraj Agarwal Rastriya Puraskar for securing first rank in the higher secondary examination	West Bengal Council of Higher Secondary Examination	2006

From	To	Designation	Organisation
2018	2019	Post Doctoral Research Associate	Texas A&M University, USA
2017	2018	Institute Research Associate	Indian Institute of Science, Bangalore
2012	2013	Associate Engineer (Stress Analysis)	Airbus Engineering Center India, Bangalore

Degree	Subject	University	Year
Ph.D.	Structural Engineering (Civil)	Indian Institute of Science, Bangalore	2018
M. E.	Structural Engineering (Civil)	Indian Institute of Science, Bangalore	2012
B. E.	Civil Engineering	Jadavpur University, Kolkata	2010

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1.

Roy Chowdhury, S., Roy, D., and Vasu, R. M. (2013). Variance-reduced particle filters for structural system identification problems. Journal of Engineering Mechanics. DOI: 10.1061/(ASCE)EM.1943-7889.0000480

2.

Sarkar, S., Roy Chowdhury, S., Venugopal, M., Vasu, R. M., and Roy, D. (2014). A Kushner–Stratonovich Monte Carlo filter applied to nonlinear dynamical system identification. Physica D: Nonlinear Phenomena. DOI: 10.1016/j.physd.2013.12.007

3.

Sarkar, S., Roy Chowdhury, S., Roy, D. and Vasu, R. M. (2015). Internal noise-driven generalized Langevin equation from a nonlocal continuum model. Physical Review E. DOI: 10.1103/PhysRevE.92.022150

4.

Roy Chowdhury, S., Rahaman, M. M., Roy, D. and Sundaram, N. (2015). A micropolar peridynamic theory in linear elasticity. International Journal of Solids and Structures. DOI: 10.1016/j.ijsolstr.2015.01.018

5.

Chowdhury, S. Roy, Roy, P., Roy, D. and Reddy, J. N. (2016). A peridynamic theory for linear elastic shells. International Journal of Solids and Structures. DOI: 10.1016/j.ijsolstr.2016.01.019

6.

Roy Chowdhury, S., Roy, D., Reddy, J. N., & Srinivasa, A. (2016). Fluctuation relation based continuum model for thermoviscoplasticity in metals. Journal of the Mechanics and Physics of Solids. DOI: 10.1016/j.jmps.2016.07.022

7.

Roy Chowdhury, S., Roy, D. and Reddy, J. N. (2017). Relating entropy flux with heat flux in two-temperature thermodynamic model for metal thermoviscoplasticity. Journal of Applied Mechanics. DOI: 10.1115/1.4034971

8.

Roy Chowdhury, S., Kar, G., Roy, D. and Reddy, J. N. (2017). Two-temperature thermodynamics for metal viscoplasticity: continuum modeling and numerical experiments. Journal of Applied Mechanics. DOI: 10.1115/1.4034726

9.

Roy Chowdhury, S., Kar, G., Roy, D. and Reddy, J. N. (2018). Metal viscoplasticity with two-temperature thermodynamics and two dislocation densities. Continuum Mechanics and Thermodynamics. DOI: 10.1007/s00161-017-0606-6

10.

Das, S., Roy Chowdhury, S. and Roy, D. (2018) (2018). A constitutive model for thermoplastics based on two temperatures. European Journal of Mechanics-A/Solids. DOI: 10.1016/j.euromechsol.2018.06.010

11.

Roy Chowdhury, S., and Reddy, J. N. (2019). Geometrically exact micropolar Timoshenko beam and its application in modelling sandwich beams made of architected lattice core. Composite Structures. DOI: 10.1016/j.compstruct.2019.111228

12.

Roy Chowdhury, S., Roy, P., Roy, D. and Reddy, J. N. (2019). A modified peridynamics correspondence principle: Removal of zero-energy deformation and other implications. Computer Methods in Applied Mechanics and Engineering. DOI: 10.1016/j.cma.2018.11.025

13.

Roy Chowdhury, S. and Roy, D. (2019). A non-equilibrium thermodynamic model for viscoplasticity and damage: Two temperatures and a generalized fluctuation relation. International Journal of Plasticity. DOI: 10.1016/j.ijplas.2018.09.014

14.

Kar, G., Roy Chowdhury, S. and Roy, D. (2020). A non-equilibrium thermodynamic model for viscoplasticity coupled with damage for BCC metals. Mechanics of Advanced Materials and Structures.. DOI: 10.1080/15376494.2020.1717692

15.

Bijaya, A., and Chowdhury, S. R. (2020). On failure mode transition: A phase field assisted non-equilibrium thermodynamics model for ductile and brittle fracture at finite strain. Meccanica. DOI: 10.1007/s11012-020-01175-5

16.

Bijaya, A., Chowdhury, S. R. and Chowdhury, R. (2023). Multiscale phase-field approach for investigation of anisotropic fracture properties of architected materials. Mechanics of Materials. DOI: 10.1016/j.mechmat.2022.104528

17.

Bijaya, A., Chowdhury, S. R. and Chowdhury, R. (2023). Reduced-dimensional phase-field theory for lattice fracture and its application in fracture toughness assessment of architected materials. European Journal of Mechanics-A/Solids. DOI: 10.1016/j.euromechsol.2023.104964

18.

Ananya Bijaya, Shiv Sagar, and Shubhankar Roy Chowdhury (2024). A consistent multi-phase-field formulation for anisotropic brittle fracture. Engineering Fracture Mechanics. DOI: https://doi.org/10.1016/j.engfracmech.2023.109825

19.

S. Sagar, A. K. Tiwari, and S. Roy Chowdhury (2025). Thermodynamically consistent elastoplastic phase-field fracture model for micromechanical analysis of fibre-reinforced polymer composites. Composite Structures. DOI: https://doi.org/10.1016/j.compstruct.2025.118908

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1. Title:- Ultra-light damage tolerant structures made of architected materials: Mechanics of nonlinear finite deformation and design
Sponsor: FIG-IIT Roorkee	Sanctioned Year: 2019-20	Amount: ₹ 20.00 Lakhs	Role: PI

2. Title:- Computational Multiscale Modeling as a Virtual Experimental Setup for Prediction of Elastic and inelastic Response of Unidirectional Fibre Reinforced Polymer Composites
Sponsor: ARB, DRDO	Sanctioned Year: 2021-22	Amount: ₹ 36.27 Lakhs	Role: PI

3. Title:- Multiscale Virtual Testing & Experiments of FRP Composites for High Speed Train and Infrastructure Applications
Sponsor: SERB, New Delhi	Sanctioned Year: 2021-22	Amount: ₹ 21.49 Lakhs	Role: PI

Designation	Organisation	From Period	To Period
Deputy Officer in Charge of Computer Lab and ESA Lab, Structural Engineering	Indian Institute of Technology Roorkee	2020	2022
Officer in Charge, MTech Structural Engineering	Civil Engineering, IIT Roorkee	2022	2024

1.

S. B. Ghodke, A. Singh, B. Singh, and S. Roy Chowdhury (2025). Additively manufactured smart materials and structures in construction and building applications. 978-0-443-16144-5 Elsevier

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S. No.	Project Title	Student Name	Degree	Year
1.	Plastic Analysis of Sandwich Beams and Two-way Panels	Vivek Chaudhari	PG	2020
2.	Damage in reinforced concrete structures	Kushagra Bhargava	PG	2021
3.	Multiscale analysis of UDFRP lamina	Dhriti Birua	PG	2021
4.	Progressive failure analysis of FRP laminates	Seddiqullah Seddiq	PG	2022

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S. No.	Topic	Scholar Name	Registration Year	Co-Supervisor
1.	Mechanics of Composites	Shiv Sagar	2020
2.	Multiscale mechanics of composites	Parvez Barkat Khan	2021
3.	Multiscale mechanics of composites	Vishnu Priya A	2022
4.	3D Printing of Concrete	Swapnil Balasaheb Ghodke	2022	Prof. Shubhankar Roy Chowdhury,
5.	To be decided.	Ayush Kumar Tiwari	2023	Prof. Sudakshina Dutta,
6.	To be decided.	Pavini Arora	2024
7.	To be decided.	Aabid Rehman Dar	2024	Prof. Shubhankar Roy Chowdhury,

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S. No.	Topic	Scholar Name	Status	Awarded Year
1.	Exploration of Fracture Anisotropy, Multiscale Mechanics and Dynamics Fracture through Phase-Filed Method	Ananya Bijaya	Awarded	2024

S. No.	Course Name	Course Code	Class Name	Semester & Year
1.	Structural Analysis – I	CEN-207	B. Tech.	Autumn Semester 2023-24
2.	Design of Reinforced Concrete Elements	CEN-391	B. Arch.	Autumn Semester 2020-21
3.	B. Tech. Project	CEN-400A	B. Tech.	Autumn Semester 2020-21
4.	Finite Element Analysis	CEN-545	M. Tech.	Spring

S. No.	Title	Organisation	Date
1.	Establishment of a Technology Innovation Centre on 3D printing of Concrete at CED, IIT Roorkee	In a session at “3D Printing and its Hitech Applications in Civil and Infrastructure projects" organized by : Indian Space Industry Exhibitors and MiCoB Private Ltd, Gandhinagar	10-Jul-2022
2.	Lecture on the Finite Element Method in the Short-Term Technical Course for TATA Steel Employees	CEC-IIT Roorkee	27-Jun-2023

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1.

S. Roy Chowdhury, and D. Roy (2017). Two-temperature thermoviscoplasticity coupled to ductile fracture: a phase field model. 14th International Conference on Fracture (ICF 14). Place: Rhodes, Greece

2.

S. B. Ghodke, B. Singh and S. Roy Chowdhury (2024). Rheological characterization of 3D printable concrete made with coarse aggregates. 14th Structural Engineering Convention (SEC-2024). Place: Tiruchirappalli, India

3.

S. Sagar, and S. Roy Chowdhury (2024). Homogenized post-peak response of composites from phase-field fracture simulation at microscale. ASCE Engineering Mechanics Institute 2024 International Conference. Place: Vienna, Austria

4.

S. B. Ghodke, S. Roy Chowdhury, and B. Singh (2025). Characterising flexural behaviour of coarse aggregatebased 3D printed concrete beams using acoustic emission technique. 12th International Conference on Fracture Mechanics for Concrete and Concrete Structures. DOI: https://doi.org/10.21012/FC12.1183 Place: Vienna, Austria

5.

S. B. Ghodke, A. Singh, B. Singh, and S. Roy Chowdhury (2025). Some Insights on Role of Water Film Thickness in Rheology of Coarse Aggregate Based 3D Printable Concrete. ISEC 2025 / ASEA SEC 7 Integrating Technology for Advanced Practices in Structural Engineering and Construction. DOI: https://doi.org/10.14455/ISEC.2025.12(1).CTE-24 Place: Sydney, Australia

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