Rana Roy

About

I am involved in teaching courses on Applied Mechanics and Dynamics. My research interest includes earthquake engineering with balanced emphasis on structural and geotechnical engineering. Some important milestones of my research group may be enumerated as follows:

(a) Using principles of applied mechanics and through advanced numerical studies, potential danger of amplification in response due to two-component shaking relative to one-component counterpart has been uncovered. To obviate the tedium of bi-directional analysis, a novel strategy which requires less-rigorous uni-directional analysis has been evolved. This eliminates the need of estimating structural response for all admissible incidence angles, too. This development has been shown generalized irrespective of site characteristics. This can succesfully help estimating seismic damage under bi-directional shaking.

(b) A generalized and robust approach to construct seismic fragilities has been introduced using spectrum matching. This method works well for any geotechnical and structural systems both under real and synthetic records.

(c) Potential danger of landsides during earthquake has been comprehensively investigated leading to a simple formulation of the intensity of shaking correspodning to the incipient landslide. By means of introducing formal dimensional analysis, a simple method to estimate the order of permanent displacement has been proposed.

(d) Several contributions on the implications of soil-structure interaction covering wide range of civil engineering structures have led to the meaningful solutions of many challenging problems of practical interest. By astute application of the principles of mechanics, methodology towards estimating lateral capacity of piles has been developed.

(e) Challenges associated with irregular structures has been elaborately explored with due cognizance to soil-structure interaction taking into account the emerging concepts and challenges relevant to (a) interdependency between strength and stiffness, (b) multistory systems in contrast to single story companion and (c) inherent uncertainties in ground motions. Concatenation of these studies evolves the important guidelines of mitigating dangers of structural irregularity.

Academic Qualifications

Ph.D (Department of Civil Engineering, Bengal Engineering and Science University, Shibpur, 2009)
ME (Department of Civil Engineering, Bengal Engineering College (D.U), 2001)
BE (Department of Civil Engineering, Bengal Engineering College (D.U), 1998)

Research Statement

Earthquake dynamics of structures
Dynamic soil-structure interaction
Earthquake-induced landslides
Probabilistic seismic analysis

Latest Publications

1 A Acharjya, A Santra, R Roy, Estimating structural response to bidirectional seismic excitation using spectrum compatible motions: Performance of a pair of companion spectra, Earthquake Engineering and Structural Dynamics, 2024

2 A Acharjya, A Santra, R Roy, Response of structures to bidirectional seismic excitation using spectrum compatible records: Evolution of a pair of spectra from Newmark's sliding block, Journal of Structural Engineering, 2024

3 Roy, R. and Santra, A., Seismic safety of RC piers with parameter uncertainties: Assessing dimensionless response using Bayesian linear regression, 107, 102414:1-17, Structural Safety, 2024

4 C Pradhan, R Roy, Rigid slender blocks with eccentricity: A mathematical model in 3-D, Structural Engineering Convention, 2023

5 A Acharjya, R Roy, Seismic fragilities for bidirectional shaking accounting for parameter uncertainties, Structural Engineering Convention, 2023

6 A Banerjee, C Pradhan R Roy, Dynamics of free-standing rigid blocks: Interpretation of free-vibration characteristics, Structural Engineering Convention, 2023

7 A Banerjee, P K Das, R Roy, Seismic response of 3D slender free-standing rigid blocks: Implications of flexible base and site characteristics, Civil Engineering Congress, Haldia Institute of Technology, 2023

8 M. Naskar, M., R. Roy, and S. S. Mayengbam, Response of Vertically Irregular Buildings to Tsunami, 161-168, Recent Advances in Civil Engineering: Select Proceedings of ICSTE 2023 , Singapore: Springer Nature Singapore, 2023

9 C Pradhan, R Roy, Dynamics of 3D slender blocks: A mathematical model, International Journal of Structural Stability and Dynamics, 2023

10 A Santra, R Roy, Bond-slip at anchorage under unidirectional and bidirectional seismic excitation: Search for an efficient mathematical model, 55, 1622-1644, Structures, 2023

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Research Areas

Soil-structure interaction
Applied Mechanics
Probabilistic seismic analysis
Dynamic soil-structure interaction
Earthquake dynamics of structures

Teachings

UG Courses

1 Fluid Mechanics Laboratory 2 Rigid Body Dynamics 3 Theoretical Soil Mechanics 4 Advanced Structural Dynamics 5 Finite Element Method 6 Analysis of Structures 7 Mechanics of Deformable Bodies 8 Mechanics

Publications

3 Roy, R. and Santra, A., Seismic safety of RC piers with parameter uncertainties: Assessing dimensionless response using Bayesian linear regression, 107, 102414:1-17, Structural Safety, 2024

4 C Pradhan, R Roy, Dynamics of 3D slender blocks: A mathematical model, International Journal of Structural Stability and Dynamics, 2023

5 A Santra, R Roy, Bond-slip at anchorage under unidirectional and bidirectional seismic excitation: Search for an efficient mathematical model, 55, 1622-1644, Structures, 2023

6 A Santra, R Roy, Assessing residual deformation of bridge piers under bidirectional near-fault motions with forward directivity and fling-step, 21, 3673-3718, Bulletin of Earthquake Engineering, 2023

7 A Acharjya, R Roy, Estimating seismic response to bidirectional excitation per unidirectional analysis: A reevaluation for motions with fling-step using SDOF systems, 164, 107563: 1-21, Soil Dynamics and Earthquake Engineering, 2023

8 C Pradhan, A Banerjee, R Roy, Evolution of a 3D model for free-standing rigid blocks and its behavior under base excitations, 142, 103992, International Journal of Non-Linear Mechanics, 2022

9 R Roy, A Acharjya, A Roy, A Santra, G Bhattacharya, Response of structures to bidirectional seismic loading: Research pogress and future directions, 148 (7), 03122002, Journal of Structural Engineering, 2022

10 R Roy, A Roy, G. Bhattacharya, Discussion of “Combination Rules Used to Account for Orthogonal Seismic Effects: State-of-the-Art Review” by Jianze Wang, Henry V. Burton, and Kaoshan Dai, 146(8), 07020011:1-2, Journal of Structural Engineering, 2020

11 R Roy, A Roy, G. Bhattacharya, Estimating seismic response of RC piers under unidirectional and bidirectional shaking: A mechanics-based approach, 146(7), 04020113:1-21, Journal of Structural Engineering, 2020

12 D. Kar, R. Roy, Seismic behavior of RC bridge piers under bidirectional excitations: Implications of site effects, 22(2), 303-331, Journal of Earthquake Engineering, 2018

13 A. Roy, A. Santra, R. Roy, Estimating seismic response under bidirectional shaking per uni-directional analysis: Identification of preferred angle of incidence, 106, 163-181, Soil Dynamics and Earthquake Engineering, 2018

14 A. Roy, G. Bhattacharya, R. Roy, Maximum credible damage of RC bridge piers under bidirectional seismic excitation for all incidence angles, 152, 251-273, Engineering Structures, 2017

15 D. Pramanik, A. K. Banerjee, R. Roy, Implications of bi-directional interaction on seismic fragilities of structures, 5(2), 101-126, Coupled Systems Mechanics, 2016

16 S. Chakroborty, R. Roy, Seismic behavior of horizontally irregular structures: Current wisdom and challenges ahead, 68(6), 060802:1-17, Applied Mechanics Reviews, 2016

17 S. Chakroborty, R. Roy, Role of ground motion characteristics on inelastic seismic response of irregular structures, 22(1), B4015007:1-16, Journal of Architectural Engineering, 2016

18 A. Sengupta, L. Quadery, S. Sarkar, R. Roy, Influence of bidirectional near-fault excitations on RC bridge piers, 21(7), 04016034:1-30, Journal of Bridge Engineering, 2016

19 A. K. Banerjee, D. Pramanik, R. Roy, Seismic structural fragilities: Proposals for improved methodology per spectral matching of accelerogram, 111, 538-551, Engineering Structures, 2016

20 R. Roy, P. Thakur, S. Chakroborty, Spectral matching of real ground motions: Applications to horizontally irregular systems in elastic range, 17(11), 1623-1638, Advances in Structural Engineering, 2014

21 R. Roy, P. Thakur, S. Chakroborty, Scaling of ground motions and its implications to plan-asymmetric structures, 57, 46-67, Soil Dynamics and Earthquake Engineering, 2014

22 Roy, R. and Chakrovorty, S., Seismic demand of plan-asymmetric structures: A re-visit, 4(1), 99-117., Earthquake Engineering and Engineering Vibration, 2013

23 Roy, R. and Mahato, S, Equivalent lateral force method for buildings with setback: Adequacy in elastic range, 4, 6, Earthquakes and Structures, Techno Press, 2013

24 Dutta, S. C. and Roy, R., Performance of seismically designed buildings under blast loadings, 36, ,. C2, 149-166., Iranian Journal of Science and Technology, Transaction B, Engineering,, 2012

25 Mandal, B., Roy, R. and Dutta, S. C, Lateral capacity of piles in layered soil: A simple approach, 44(5), 571-584, Structural Engineering and Mechanics, Techno Press, 2012

26 Roy, R. and Dutta, S.C., Inelastic seismic demand of low-rise buildings with soil-flexibility, 45, . 4, 419-432., International Journal of Nonlinear Mechanics, 2010

27 Das, P. K. and Roy, R., Seismic behaviour of torsionally unbalanced structures: Influence of strength dependent stiffness, 03, 03SPL, 352-361., International Journal of Earth Sciences and Engineering, 2010

28 Dutta, S. C., Bhattacharya, K., and Roy, R., Effect of flexibility of foundations on its seismic stress distribution, 13, 1, 22-49., , Journal of Earthquake Engineering, Taylor and Francis,, 2009

29 Dutta, S. C., Raychowdhury, A., Chakrovorty, S. and Roy, R., Pushover analysis: Proposals for modification, 19, 9, 249-255., structural Engineering International, 2009

30 Dutta, S. C.., Dutta, S. and Roy, R., Dynamic behaviour of R/C elevated tanks with soil-structure interaction, 31, 11, 2617-2629., Engineering Structures, Elsevier, 2009

31 Dutta, S. C., Roy, R., Das, P. K., Roy, R., Reddy, G. R, Seismic safety of structures: Influence of soil-flexibility, asymmetry and ground motion characteristics, 307, . 3-5, 452-480., Journal of Sound and Vibration, Elsevier,, 2007

32 Bhattacharya, K., Dutta, S. C., and Roy, R., Seismic design aids for buildings incorporating soil-flexibility effect, 5, 2, 341-348., journal of Asian Architecture and Building Engineering,, 2006

33 Dutta, S. C., Das, P. K., and Roy, R,, Seismic behaviour of code-designed bi-directionally eccentric systems, 131, 10, 1497-1514, Journal of Structural Engineering, ASCE, 2005

34 Roy, R., Bhattacharya, K. and Dutta, S. C, “Behaviour of grid foundation under static gravity loading, 85, .261-268., Journal of Institution of Engineers, 2004

35 Dutta, S. C., Bhttacharya, K., and Roy, R., Response of low-rise buildings under seismic ground excitation incorporating soil response of low-rise buildings under seismic ground excitation incorporating soil-structure interaction, 24, 12, 893-914., Soil Dynamics and Earthquake Engineering, 2004

36 Dutta, S. C., Roy, R., and Dutta, S., Applicability of a few analytical formulations for dynamic characteristics of elevated tanks with battered stagings, 9, 4, 803-819., Int. Jr. of Applied Mechanics and Engineering, Technical University Press, 2004

37 R. Roy, Estimation of fundamental time periods of building frames: A brief review, XXI, 2, pp. 8 - 9., , Civil Engineering Today, 2002

38 Roy, R., Dutta, S. C., and Moitra, D., Soil-structure interaction in buildings with isolated and grid foundations: Progress and scopes”, 31, . 4 pp. 15-36., The Bridge and Structural Engineers,, 2002

39 Dutta, S. C., and Roy, R, “A critical review on idealization and modelling for interaction among soil-foundation structure system, 80, . 20-21, pp. 1579-1594., Computers and Structures, Elsevier,, 2002

40 Roy, R., and Dutta, S. C., “Differential settlement among isolated footings of building frames: The problem, its estimation and possible measures, 6, 1, pp. 165 - 186., Int. Journal of Applied Mechanics and Engineering, Technical University Press, 2001

1 C Pradhan, R Roy, Rigid slender blocks with eccentricity: A mathematical model in 3-D, Structural Engineering Convention, 2023

2 A Acharjya, R Roy, Seismic fragilities for bidirectional shaking accounting for parameter uncertainties, Structural Engineering Convention, 2023

3 A Banerjee, C Pradhan R Roy, Dynamics of free-standing rigid blocks: Interpretation of free-vibration characteristics, Structural Engineering Convention, 2023

4 A Banerjee, P K Das, R Roy, Seismic response of 3D slender free-standing rigid blocks: Implications of flexible base and site characteristics, Civil Engineering Congress, Haldia Institute of Technology, 2023

5 M. Naskar, M., R. Roy, and S. S. Mayengbam, Response of Vertically Irregular Buildings to Tsunami, 161-168, Recent Advances in Civil Engineering: Select Proceedings of ICSTE 2023 , Singapore: Springer Nature Singapore, 2023

6 A Sengupta, R Roy, Consequences of sequence of motion: Implications of site characteristics, In: Saha, S., Sajith, A.S., Sahoo, D.R. and Sarkar, P. (eds), Recent Advances in Materials, Mechanics and Structures. Lecture Notes in Civil Engineering, 269, Springer, Singapore., 2022 7 A Santra, R Roy, Identification of the domain of significance for bidirectional analysis under seismic excitation, In: Saha, S., Sajith, A.S., Sahoo, D.R. and Sarkar, P. (eds), Recent Advances in Materials, Mechanics and Structures. Lecture Notes in Civil Engineering, 269, Springer, Singapore., 2022 8 R Roy, A Mahajan, C Pradhan, Response of structures to motions with fling step: Does fling matter?, 1 (3), Structural Engineering Convention, 2022

9 A. Roy, R. Roy, Seismic behaviour of R/C elevated water tanks with shaft stagings: Effect of biaxial interaction and ground motion characteristics, 1205-1215, Advances in Structural Engineering, 2014

Patents

#	Patents	Year

Member

Responsibilities

Registrar

May 31 2021 - 15 January, 2022

Reference order No.: 19/14 dt. 28.05.2021

Member, Preparation/transmission of data concerning NIRF ranking/ NBA and other accreditation etc.

August 03, 2020 - to date

Reference Order: RDO/3046/20 dated 03.08.2020

Member, Internal Complaints Committee (ICC)

November 23, 2020 - May 2021

Reference Order: RDO/3238/20 dated 23.11.2020

Head, School of Mechatronics and Robotics

November 01, 2020 - May 01, 2021

Reference Order: 7258/D (FW) dated 28.10.2020

Associate Dean (Academic)

21.02.2020 - 20.02.2022

Reference Order: 6979/D(FW)/20 dated 20.02.2020

Head, School of Community Science and Technology

January 10, 2020 - July 09, 2020

Reference Order: RDO/2133/20 dated 06.01.2020

Projects

Assessing response of structures to bidirectional seismic excitations: Explorations to simple, efficient and design-oriented options, Sponsored
Ongoing
Response of multistorey structures with setback under bi-directional ground motions, Sponsored
Completed