Sajal

Postdoctoral Fellow (NPDF)

IIT Madras

Structural Engineering Researcher specializing in computational and experimental mechanics with expertise in peridynamics, metamaterials, wave propagation, and fracture mechanics. Currently working as a Postdoctoral Fellow under Prof. Phanisri Pradeep Pratapa at IIT Madras, and expanding my expertise to topology optimization, origami and kirigami-inspired mechanical metamaterials, and multifunctional metamaterials. Skilled in computational modeling, numerical simulation, and algorithm development using FORTRAN, Python, and MATLAB. I aim to integrate computational modeling with experiments to develop metamaterial-based solutions addressing real-world engineering challenges.

Education

Doctor of Philosophy (August 2020 – May 2025)

Indian Institute of Technology (Indian School of Mines) Dhanbad, India

Structural Engineering, Department of Civil Engineering

Research Advisor: Prof. Pranesh Roy

Thesis Title: Nonlocal Continuum Models for Metamaterials using Peridynamics.

Master of Technology (2013 – 2015)

Indian Institute of Technology Roorkee, India

Structural Dynamics, Department of Earthquake Engineering

Research Advisors: Prof. H.R. Wason

Thesis Title: Earthquake loss estimation for Shillong city.

Bachelor of Technology (2008 – 2012)

National Institute of Technology Surathkal, India

Department of Civil Engineering

Research Advisors: Prof. Katta Venkataramana

Higher Secondary Education (2007-2008)

D.A.V. Koylanagar (C.B.S.E Board), Dhanbad, India

Secondary Education (2005-2006)

S.S.V.M. Baghmara (C.B.S.E Board), Dhanbad, India

Research Publication

J12. Dey, B., Sajal, & Roy, P. (2025), “Peridynamics modeling of multi-shell structures: Application to metasurfaces”, Thin-Walled Structures, 217, Part B, 113890. https://doi.org/10.1016/j.tws.2025.113890. [Q1, IF: 6.6]

J11. Sah, B., Sajal, Choudhary, N., Kumar, K., & Roy, P. (2025), “Peridynamics model of viscoelasticity for beams and lattice structures”, International Journal of Mechanical Sciences, 301, 110545. https://doi.org/10.1016/j.ijmecsci.2025.110545. [Q1, IF: 9.4]

J10. Kumar, K., Choudhary, N., Sajal, Sah, B., & Roy, P. (2025), “Peridynamics model of viscoelasticity for shells and metasurfaces”, Computer Methods in Applied Mechanics and Engineering, 444, 118169. https://doi.org/10.1016/j.cma.2025.118169. [Q1, IF: 7.3]

J9. Choudhary, N., Sajal, & Roy, P. (2025), “Peridynamics beam plasticity theory: Yield surface for general cross-sectional geometry”, International Journal of Mechanical Sciences, 295, 110249. https://doi.org/10.1016/j.ijmecsci.2025.110249. [Q1, IF: 9.4]

J8. Sajal, & Roy, P. (2025), “Peridynamics modeling of locally resonant metamaterials”, Journal of Peridynamics and Nonlocal Modeling, 7, 3. https://doi.org/10.1007/s42102-025-00127-5. [Q2]

J7. Ranjana, K. N., Sajal, & Roy, P. (2025), “Riemannian geometry based peridynamics computational homogenization method for cellular metamaterials”, Computer Methods in Applied Mechanics and Engineering, 436, 117714. https://doi.org/10.1016/j.cma.2024.117714. [Q1, IF: 7.3]

J6. Sajal, & Roy, P. (2025), “Peridynamics model of torsion-warping: Application to lattice beam structures”, Thin-Walled Structures, 206, Part A, 112603. https://doi.org/10.1016/j.tws.2024.112603. [Q1, IF: 6.6]

J5. Mahadeshwar, V., Sajal, & Roy, P. (2024), “Finite deformation peridynamics shell theory: Application to mechanical metasurfaces”, Thin-Walled Structures, 205, Part B, 112401. https://doi.org/10.1016/j.tws.2024.112401. [Q1, IF: 6.6]

J4. Kumar, A., Sajal, & Roy, P. (2024), “Peridynamics contact model: Application to healing using phase field theory”, International Journal of Mechanical Sciences, 280, 109553. https://doi.org/10.1016/j.ijmecsci.2024.109553. [Q1, IF: 9.4]

J3. Sajal & Roy, P. (2024), “Finite deformation micropolar peridynamic theory: Variational consistency of wryness measure”, International Journal of Mechanical Sciences, 271, 109306. https://doi.org/10.1016/j.ijmecsci.2024.109306. [Q1, IF: 9.4]

J2. Sajal & Roy, P. (2023), “Peridynamics modeling of cellular elastomeric metamaterials: Application to wave isolation”, International Journal of Mechanical Sciences, 254, 108456. https://doi.org/10.1016/j.ijmecsci.2023.108456. [Q1, IF: 9.4]

J1. Dutta, S. C., Kumar, S., Bhoyar, P. S., Hussain, M. A., & Sajal (2022), “Behavior of vertically irregular structures near mines: Comparison of responses under seismic and mine blast-induced ground motion”, The Structural Design of Tall and Special Buildings, 31(1), e1897. https://doi.org/10.1002/tal.1897. [Q2, IF: 1.3]

Conference Presentation/Publication

C4. Sajal & Roy, P., "A finite deformation micropolar peridynamic theory and its application to metamaterials", 16th World Congress on Computational Mechanics and 4th Pan American Congress on Computational Mechanics (WCCM), July 21-26, 2024, Vancouver, Canada (ID: W241289). https://doi.org/10.23967/c.wccm.2024.067.

C3. Sajal & Roy, P., "Peridynamics Simulation of Wave Isolation in Metamaterials", 9th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS), June 3-7, 2024, Lisbon, Portugal (ID: 356).

C2. Sajal & Roy, P., “Study of wave propagation in polymers in the presence of local elastic instability and rupture using peridynamics”, 8th International Congress on Computational Mechanics & Simulation (ICCMS), December 9-11, 2022, IIT Indore, India (Reference Id: ICCMS21_1657817514).

C1. Wason, H. R. & Sajal, (2015). Earthquake loss estimation for Shillong city, VIth Annual conference of the international society for integrated disaster risk management-Disaster risk reduction challenges and opportunities for sustainable growth, (TIFAC- IDRIM), October 28-30, 2015, New Delhi.

Workshop and Training

6. Participated in international workshops on SMART AND REGILIENT BRIDGES organized by IIT (ISM) Dhanbad from 3rd to 5th December 2021.

5. Participated in high-end workshops for enriching the minds of the talented researchers and students with the DATA SCIENCE AND ANALYTICAL TOOLS & TECHNIQUES organized by IIT (ISM) Dhanbad from 28th June 2021 to 2nd July 2021.

4. Completed training program on ADVANCED PEDAGOGY & DIGITAL TOOL organized by IIT Kharagpur from 3rd to 7th June 2019.

3. Participated in a short-term course on ADVANCED COMPUTING TOOLS IN CIVIL ENGINEERING conducted by IIT Kharagpur from 5th to 9th March 2018.

2. Completed FACULTY DEVELOPMENT PROGRAMME organized and conducted by Teaching Learning Centre, IIT Madras from 31st January to 4th February 2018.

1. Participated in the national workshop on RECENT ADVANCES IN CIVIL ENGINEERING organized by NIT Jamshedpur from 2nd to 4th March 2017.

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