Publications:

Journals :

1. Das, S., V.K. Gupta, I.D. Gupta (2005). “Codal provisions of seismic hazard in Northeast India”, Current Science, Vol. 89, No. 12, pp. 2004–2008.

2. Das, S., I.D. Gupta, V.K. Gupta (2006). “A probabilistic seismic hazard analysis of Northeast India”, Earthquake Spectra, Vol. 22, No. 1, pp. 1–27.

3. Das, S., V.K. Gupta, V. Shrimahavishnu (2007). “Damage-based design with no repairs for multiple events and its sensitivity to seismicity model”, Earthquake Engineering and Structural Dynamics, Vol. 36, pp. 307–325.

4. Das, S., V.K. Gupta (2008). “Wavelet-based simulation of spectrum-compatible aftershock accelerograms”, Earthquake Engineering and Structural Dynamics, Vol. 37, pp. 1333–1348.

5. Das, S., V.K. Gupta (2010). “Scaling of response spectrum and duration for aftershocks”, Soil Dynamics and Earthquake Engineering, Vol. 30, pp. 724–735.

6. Das, S., V.K. Gupta (2011). “A wavelet-based parametric characterization of temporal features of earthquake accelerogram”, Engineering Structures, Vol. 33, pp. 2173–2185.

7. Almeida, J.P., S. Das, R. Pinho (2012). “Adaptive force-based frame element for regularized softening response”, Computers and Structures, Vol. 102-103, pp. 1–13.

8. Nithin, V.L., S. Das, H.B. Kaushik (2017). “Wavelet-based simulation of scenario-specific nonstationary accelerograms and their GMPE compatibility”, Soil Dynamics and Earthquake Engineering, Vol. 99, pp. 56–67.

9. Das, S., B. Hazra (2018). “Frequency-dependent principal component analysis of multicomponent earthquake ground motions”, Earthquake Engineering and Structural Dynamics, Vol. 47, pp. 1360–1366.

10. Mukhopadhyay S.,  S. Das, V.K. Gupta (2019). “Wavelet-based generation of accelerogram-consistent, spectrum-compatible motions: New algorithms and short-period overestimation”, Soil Dynamics and Earthquake Engineering, Vol. 121, pp. 327–340.

11. Chand B., H.B. Kaushik, S. Das (2019). “Lateral Load Behavior of Traditional Assam-Type Wooden Housing”, Journal of Structural Engineering, ASCE, Vol. 145: 04019072.

12. Naskar S., S. Das,  H.B. Kaushik (2020). “Retrieval of true lateral load-deformation behaviour of axially loaded columns from experimental data”, Journal of Structural Engineering, ASCE,  Vol. 146: 04020007.

13. Nithin V.L., S. Das,  H.B. Kaushik (2020). “Stochastic simulation of fully nonstationary aftershock ground motions from known preceding main shock”, Soil Dynamics and Earthquake Engineering,  Vol. 130: 106006.

14. Chand B., H.B. Kaushik, S. Das (2020). “Material Characterization of Traditional Assam-type Wooden Houses in North-Eastern India”, Journal of Materials in Civil Engineering, ASCE, Vol. 32(12): 04020384.

15. Chand B., H.B. Kaushik, S. Das (2020). “Lateral Load Behavior of Connections in Assam-type Wooden Houses in the Himalayan Region of India”, Construction and Building Materials, Vol. 261: 119904.

16. Tamuly P., A. Chakraborty, S. Das (2020). “Condition Assessment of Bridge Pier Using Constrained Minimum Variance Unbiased Estimator”, Structural Monitoring and Maintenance, Vol. 7, pp. 319–344.

17. Tamuly P., A. Chakraborty, S. Das (2021). “Experimental Verification of Constrained Minimum Variance Unbiased Estimator for Simultaneous Input and State Estimation of BIBO Type Bouc-Wen Hysteretic Structural System”, Structural Control and Health Monitoring, Vol. 28: e2648.

18. Tamuly P., A. Chakraborty, S. Das (2021). “Nonlinear Finite Element Model Updating Using Constrained Unscented Kalman Filter for Condition Assessment of Reinforced Concrete Structures ”, Journal of Civil Structural Health Monitoring, Vol. 11, pp. 1137–1154.

19. Tamuly P., A. Chakraborty, S. Das (2021). “Simultaneous Input and Parameter Estimation of Hysteretic Structural Systems Using Quasi-Monte Carlo Simulation Based Minimum Variance Unbiased Estimator”, Journal of Bridge Engineering, ASCE.

20. Naskar S.,  S. Das (2021). “Bi-directional ground motions: stochastic simulation and frequency-dependent modal combination rule”, Earthquake Engineering and Structural Dynamics.

21. Das S., A. Chakraborty, S. Das (2022). “Reliability-based optimal tuning of magneto-rheological elastomer for efficient structural control against non-stationary ground motion”, Journal of Earthquake Engineering.

22. Das S.,  V.K. Gupta (2022). “On contribution of aftershocks to cumulative seismic damage in RC frames”, ISET journal of Earthquake Technology, Vol. 59, pp. 1–26.

23. Naqvi A.A.,  V.K. Gupta,  S. Das (2023). “On frequency-domain estimation of increase in design yield force levels of SDOF structures due to multiplicity of earthquake events”, Earthquake Engineering and Resilience.

24. Bora N.,  S. Das (2023). “Empirical Green's Function simulations toward site-specific ground motion prediction for Kopili fault of NER India”, Pure and Applied Geophysics.

25. Naskar S., S. Das,  H.B. Kaushik (2024). “Combined global seismic damage for 3D RC buildings using recorded floor-displacement data”, Journal of Earthquake Engineering.

26. Naskar S., S. Das,  H.B. Kaushik (2024). “A novel method to evaluate combined global seismic damage index using recorded floor-displacement data for RC plane frames”, Bulletin of Earthquake Engineering (in press).

International Conferences :

1. Das, S., V.K. Gupta, R.P. Kumar (2006). “Design force ratio spectrum for performance-based design in case of multiple events”, 1^st European Conference on Earthquake Engineering and Seismology (a joint event of the 13^th ECEE & 30^th General Assembly of the ESC), Geneva.

2.  Almeida, J.P., S. Das, R. Pinho (2010). “Guidelines for fibre-based inelasticity modelling of R.C. members”, 14th European Conference on Earthquake Engineering, Ohrid, Greece.

3. Almeida, J.P., S. Das, R. Pinho (2011). “Adaptive force-based frame element for regularized response”, Computational Methods in Structural Dynamics & Earthquake Engineering (COMPDYN), Corfu, Greece.

4. Almeida, J.P., S. Das, R. Pinho (2012). “RC frame analysis with a new damage-following model”, 15th World Conference on Earthquake Engineering, Lisbon, Portugal.

5. Das, S., A. Chakraborty (2012). “Generation of elastic as well as inelastic design spectra compatible accelerogram using time-frequency analysis”, 15th World Conference on Earthquake Engineering, Lisbon, Portugal.

6. Nithin, V.L., S. Das, H.B. Kaushik (2017).  “Seismic scenario specific ground motion simulations consistent with ground motion prediction equation”, 16th World Conference on Earthquake Engineering, Santiago, Chile.

7. Chand, B., H.B. Kaushik, S. Das (2017).  “Experimental study on traditional Assam-type wooden house for seismic assessment”, 16th World Conference on Earthquake Engineering, Santiago, Chile.

8. Naskar, S., S. Das, H.B. Kaushik(2017).  “Modification and Modelling of Experiments with Bi-directional Loading on Reinforced Concrete Columns”, 13th International Conference on Vibration Problems (ICOVP), Guwahati, India.

National Conferences :

1.  Das, S., I.D. Gupta, V.K. Gupta (2002). “A new attenuation model for Northeast India”, Proceedings of the Twelfth Symposium on Earthquake Engineering, Roorkee, India, pp. 151–158.

2. Tamuly, P., B. Deka, S. Rahman, S. Das (2014). "Effect of time-frequency characteristics of mainshock-aftershock sequence on structural damage", Fifteenth Symposium on Earthquake Engineering, Paper No. 145, Roorkee, India.

3. Nithin, V.L., S. Das (2014). "Development of nonlinear design spectrum and design motion simulation for damage-based seismic design", Fifteenth Symposium on Earthquake Engineering, Paper No. 146, Roorkee, India.

4. Chand B., H.B. Kaushik, S. Das (2018). "Influence of Openings on Seismic Behavior of Traditional Assam-type Wooden House", Sixteenth Symposium on Earthquake Engineering, Paper No. 278, Roorkee, India.

5. Kumar P., S. Mukhopadhyay, S. Das (2018). "Nonlinear Response Statistics of GMPE Compatible Ground Motions", Sixteenth Symposium on Earthquake Engineering, Paper No. 331, Roorkee, India.
 

Teachings:

Random Vibration (CE 607)

Engineering Mechanics (ME 101)

Continuum Mechanics (CE 501)

Structural Analysis I (CE 205)

Dynamics of Structure (CE 411)

Advanced Mathematics for Engineers (CE 669)

Earthquake Engineering (CE 606)

Reinforced Concrete Design (CE 305)

Projects:

Principal Investigator:

Project Title: Seismic Design Criteria for RC Structures Considering Mainshock-Aftershock Sequence for Northeastern India
Funding Agency: DST

Co-Principal Investigator:

Project Title: Evaluation and Enhancement of Seismic Capacity of Typical Assam-Type Housing
Funding Agency: DST