Thesis

Sundar VS, 2013, Monte Carlo simulations with variance reduction for structural reliability modeling, updating and testing, PhD Thesis, Department of Civil Engineering, Indian Institute of Science, Bangalore.

Software packages

1. Sundar VS, 2018, ART for safety assessment, available from https://sites.google.com/site/sundarvelkur/art.

2. Sundar VS, 2018, MODE for identifying genetic causal variants, available from https://sites.google.com/site/sundarvelkur/mode.

Journal publications

1. Sundar VS and Manohar CS, 2013, Updating reliability models of statically loaded instrumented structures, Structural Safety, 40, 21-30.

2. Sundar VS and Manohar CS, 2013, Time variant reliability model updating in instrumented dynamical systems based on Girsanov's transformation, International Journal of Nonlinear Mechanics, 52, 32-40.

3. Sundar VS and Manohar CS, 2014, Estimation of time variant reliability of randomly parametered non-linear vibrating systems, Structural Safety, 47, 59-66.

4. Sundar VS and Manohar CS, 2014, Random vibration testing with controlled samples, Structural Control and Health Monitoring, 21 (10), 1269-1283. (video)

5. Sundar VS and Manohar CS, 2014, Updating reliability models for existing structures using measured responses, International Journal of Life Cycle Reliability and Safety Engineering, accepted for publication in the special issue based on SMiRT 21 conference proceedings.

6. Sundar VS and Manohar CS, 2015, Experimental studies on reliability model updating of a building frame model under random earthquake loads, International Journal of Life Cycle Reliability and Safety, special issue on Prognostics & Structuring Health Management, Vol. 1 Issue 4, 38-48.

7. Sundar VS, Ammanagi S and Manohar CS, 2015, System reliability of vibrating structures: computational modeling and laboratory testing, Journal of Sound and Vibration, 351, 189-205 (video).

8. Shields MD and Sundar VS, 2015, Targeted Random Sampling: A new approach for efficient reliability estimation for complex systems, International Journal of Reliability and Safety, 9, Nos. 2/3, 174–190.

9. Sundar VS and Shields MD, 2016, Surrogate-enhanced stochastic search algorithms to identify implicitly defined functions for reliability analysis, Structural Safety, 62, 1-11.

10. Sundar VS, 2017, Estimating rare events in biochemical systems using conditional sampling, Journal of Chemical Physics, 146 (4), 044117.

11. Sundar VS, Fan CC, Holland D, Dale AM, 2018, Determining genetic causal variants through multivariate regression using mixture model penalty, Frontiers in Genetics, 9:77.

12. Fan CC, Smeland OB, Schork AJ, Chen CH, Holland D, Lo MT, Sundar VS, Frei O, Jernigan TL, Andreassen OA, Dale AM, 2018, Beyond heritability: Improving discoverability in imaging genetics, Human Molecular Genetics, 27 (R1), R22-R28.

13. Karunamuni RA, Kuperman J, Seibert TM, Schenker N, Rakow-Penner R, Sundar VS, Teruel JR, Goa PE, Karow DS, Dale AM, and White NS, 2018, Relationship between kurtosis and bi-exponential characterization of high b-value diffusion weighted imaging: application to prostate cancer, Acta Radiologica, 0284185118770889.

14. Sundar VS and Shields MD, 2019, Reliability analysis using adaptive Kriging surrogates with multimodel inference, ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, 5(2), 04019004.

15. Lo MT, Kauppi K, Fan CC, Sanyal N, Reas ET, Sundar VS, Lee WC, Desikan RS, McEvoy LK, Chen CH, Alzheimer’s Disease Genetics Consortium, 2019, Identification of Genetic Heterogeneity of Alzheimer’s Disease across Age, Neurobiology of Aging, 84, 243 e1 - 243 e9.

16. Holland D, Frei O, Fan CC, Shadrin AA, Smeland OB, Sundar VS, Thompson P, Andreassen OA, and Dale AM, 2020, Beyond SNP Heritability: Polygenicity and Discoverability Estimated with a Univariate Gaussian Mixture Model, PLOS Genetics, 16(5), e1008612.

17. Shields MD, Giovannis D, Sundar VS, 2021, Subset simulation for problems with strongly non-Gaussian, highly anisotropic, and degenerate distributions, Computers & Structures, 245, 106432.

18. Parra-Rivas LA, Madhivanan K, Aulston BD, Wang L, Prakashchand DD, Boyer NP, Saia-Cereda VM, Branes-Guerrero K, Pizzo DP, Bagchi P, Sundar VS, Tang Y, Das U, Scott DA, Rangamani P, Ogawa Y, Roy S,

Serine-129 phosphorylation of alpha-synuclein is an activity-dependent trigger for physiologic protein-protein interactions and synaptic function, Neuron, 111(24), 4006-4023.

Book Chapters

1. Nasrellah HA, Radhika B, Sundar VS and Manohar CS, 2013, Simulation based methods for model updating in structural condition assessment, in Health Assessment of Engineered Structures: Bridges, Buildings and Other Infrastructures, Edited by Haldar A, World Scientific, Singapore, pp. 83-112.

2. Sundar VS and Manohar CS, 2015 Reliability estimation and analysis for dynamical systems, Encyclopedia of Earthquake Engineering, Editors: M. Beer, I. Kougioumtzoglou, E. Patelli, I, Siu- Kui Au, Springer, pp. 2138-2152.

3. Nisha AS, Abhinav S, Sundar VS, Radhika B and Manohar CS, 2022, Efficient simulation-based Bayesian methods for structural condition assessment, in Recent Developments in Structural Health Monitoring and Assessment - Opportunities and Challenges: Bridges, Buildings and Other Infrastructures, Edited by Haldar A and Abdullah AH, World Scientific.

Conference proceedings and presentations

1. Usmani A, Lange DJ, Webb A, Manohar CS and Sundar VS, 2010, Reliability of structural members subjected to fire, ASRANet 2010 Conference, Edinburgh, Scotland, UK, 14 – 16 June

2. Sundar VS and Manohar CS, 2011, Structural reliability model updating using noisy measurements, Proceedings of Sixth M.I.T Conference on computation fluid and solid mechanics: Focus: Solids and Structures (Editor: K J Bathe), Elsevier, M.I.T Cambridge, USA, 15 – 17 June.

3. Sundar VS and Manohar CS, 2011, Updating reliability models for existing structures using measured responses, 21st International Conference on Structural Mechanics in Reactor Technology, SMiRT 21 (Editors: B K Dutta, R K Singh, and P V Durgaprasad), IASMiRT, 6 – 11 November, New Delhi, India, 2, 985-986.

4. Shields MD and Sundar VS, 2014, Targeted Random Sampling: A new method for efficient Monte Carlo structural reliability, Proceedings of the 7th International Conference on Computational Stochastic Mechanics, Santorini, Greece, 15 – 18 June.

5. Shields MD and Sundar VS, 2015, System reliability analysis by multi-cut Targeted Random Sampling, Engineering Mechanics Institute Conference, EMI 2015, Stanford, 16 – 19 June.

6. Shields MD and Sundar VS, 2015, Targeted random sampling for time-invariant reliability analysis, 12th International Conference on Applications of Statistics and Probability in Civil Engineering, ICASP12,  Vancouver, Canada, 12 – 15 July.

7. Sundar VS and Shields MD, 2016, Adaptive surrogate model-based stochastic search algorithms for locating implicitly defined limit surfaces for structural reliability analysis, Engineering Mechanics Institute/ Probabilistic Mechanics & Reliability Conference, EMI/PMC 2016, Vanderbilt University, Nashville, 22 – 25 May.

8. Sundar VS and Shields MD, 2017, Probability of failure analysis using adaptive Kriging surrogates with Bayesian model selection, Engineering Mechanics Institute Conference, EMI 2017, San Diego, 4 – 7 June.

9. Sundar VS, Zhang J, Giovanis D, Shields MD, 2018, Ensemble MCMC samplers for failure probability estimation with subset simulation, SIAM Conference on Uncertainty Quantification, UQ18, Garden Grove, 16 – 19 April.

10. Sundar VS, Zhang J, Giovanis D, Shields MD, 2018, Conditional sampling using affine invariant ensemble MCMC: application to subset simulation, IFIP WG-7.5 Reliability and Optimization of Structural Systems, ETH Zurich, Zentrum, 26 – 29 June.

Technical Reports

1. Sundar VS, 2015, April, A short report on MATLAB implementation of subset simulation.

2. Sundar VS, 2015, November, A short report on MATLAB implementation of the Girsanov transformation for reliability analysis.

3. Sundar VS, 2016, June, A short report on interfacing MATLAB codes with ABAQUS.

4. Sundar VS, 2017, November, A short report on PYTHON implementation of subset simulation.

Poster presentation

1. Kayalvizhi M, Priyadarshini V, Sundar VS, Swetha R, Yucong Z, Quantitative Analysis of Biological Data, CSoI NSF site visit, Purdue University, 8th – 9th, December, 2014, West Lafayette, Indiana, USA.

Invited talks

1. Sundar VS, 2014, Random vibration testing with controlled samples, Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai.

2. Sundar VS, 2018, Efficient sampling methods for structural reliability analysis - surrogate modeling and stratified sampling, Department of Civil Engineering, Indian Institute of Science, Bangalore.

3. Sundar VS, 2018, Quantifying safety of uncertain systems - applications in biology, Department of Computational and Data Science, Indian Institute of Science, Bangalore.

4. Sundar VS, 2018, Efficient sampling methods for structural reliability analysis - surrogate modeling and stratified sampling, Structural Engineering Research Center, Chennai.     

Annual students' symposium (Department of Civil Engineering, IISc, Bangalore)

1. Sundar VS, 2010, Reliability of structures subjected to fire.

2. Sundar VS, 2011, Updating reliability models of existing structures.

2. Sundar VS, 2012, Estimating probability of failure using limited lab experiments for linear systems.

3. Sundar VS, 2013, A model free variance reduction technique for reliability testing.

Workshops attended

1. Short course on Structural safety analysis and reliability based design, School of Engineering, University of Edinburgh, 6th – 11th, July, 2009.

2. Workshop on Fire safety engineering and structures in fire, IISc, Bangalore, 9th – 13th, August, 2010; the workshop is a part of the UKIERI funded project "Fire resistance and repair of earthquake damaged structures"; joint collaboration with University of Edinburgh and IIT Roorkee (also member of the organizing committee). 

   1. 5th Asia-Pacific Summer School (APSS) on Smart Structures Technology, Indian Institute of Science, Bangalore, 2012 (also member of the organizing committee). 

3. Science of information for Biological data - Student workshop, Center for Science of Information, NSF Science and Technology Center, Purdue University, West Lafayette Campus 7th - 11th, July, 2014.