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Dr. Santhosh B.

Associate Professor, Department of Mechanical Engineering, School of Engineering, Coimbatore

Qualification: B-Tech, M.Tech, Ph.D
b_santhosh@cb.amrita.edu
Research Interest: Energy Harvesting from Dynamical Systems, Fluid Structure Interaction Problems, Multi-functional Energy Harvesting Methods, Nonlinear Dynamics, Nonlinear Vibration Absorbers and Isolators

Bio Publications
Bio

Dr. Santhosh B. currently serves as Associate Professor at the Department of Mechanical Engineering, School of Engineering, Coimbatore Campus. His areas of research include Linear and Nonlinear Vibrations, System Dynamics and Control and Random Vibrations.

Education

  • 2015

Ph.D (Mechanical Engineering/ Machine Design)
IIT Madras, Chennai, India

  • 2005

M.Tech (Machine Dynamics)
IIT Madras, Chennai, India

  • 1996

B.Tech (Mechanical Engineering)
College of Engineering Trivandrum, Kerala University

Teaching

(Theory Courses Handled)

  • 2014 – 2015 ODD :

MEC 100 Engineering Mechanics (B.Tech.)

  • 2015 – 2016 ODD :

MEC 302Dynamics of Machinery (B.Tech.)

  • 2015 – 2016 ODD :

MEC 362Computational Methods in Engineering (B.Tech.)

  • 2015 – 2016 EVEN :

MEC365Theory of Vibrations (B.Tech.)

  • 2016 – 2017 ODD :

MEC362Computational Methods in Engineering (B.Tech.)

  • 2016 – 2017 ODD :

16MA611Mathematical Methods for Engineering Design (M.Tech.)

  • 2016 – 2017 ODD :

16AT624Intro. to programming using MATLAB (M.Tech.)

  • 2016 – 2017 EVEN :

MEC212 Kinematics of Machines (B.Tech.)

  • 2017 – 2018 ODD :

16MA611Mathematical methods for Engineering Design (M.Tech.)

  • 2017 – 2018 ODD :

MEC239Modeling and simulation of Engineering Systems (B.Tech.)

  • 2017 – 2018 ODD :

16AT624Intro. to programming using MATLAB (M.Tech.)

  • 2017 – 2018 EVEN :

15MEC212 Kinematics of Machines (B.Tech.)

Research

My research is focused towards understanding and exploiting the dynamics of physical and engineering systems with nonlinear effects. Traditional design practices neglected the influence of nonlinearity due to the non-existence of a generalized computational frame-work and the difficulty in understanding the complex dynamics. With the advancement in computational power, efficient algorithms and experiments, there is a paradigm shift in the conventional thought process and lead to a new research direction “`Exploitingthe nonlinear behavior in physical systems to improve its performance”‘. My research is in line with the above thought process and it was understood that careful inclusion of nonlinearities in physical systems can improve the performance of the systems compared to the linear counterpart. This is demonstrated through real world applications such as bistable systems for energy harvesting, negative stiffness vibration isolation mechanism and multi-functional energy harvesting models.I am part of the thrust area group “Computational Nonlinear Dynamics and Vibrations” at Amrita Vishwa Vidyapeetham.

Research Interests

  • Nonlinear Dynamics
  • Energy harvesting from dynamical systems
  • Multi-functional energy harvesting methods
  • Nonlinear vibration absorbers and isolators
  • Fluid structure interaction problems

Currently my group working on the following important research problems

  • Enhancing the performance of bistable energy harvesting devices through elastic magnifiers and elastic discontinuous constraints
  • Analysis of multi-functional energy harvesting models with nonlinear energy sink (NES) using nonlinear normal mode (NNM) framework
  • Entrainment and bifurcation studies in disc brake models for better understanding of brake squeal
  • Development of negative stiffness vibration isolation mechanisms for precision instruments

Workshops Conducted

  • Conducted a two-day workshop on Introduction to Nonlinear Dynamics, Theory and Computation, on January 27-28, 2017. This was attended by nearly 70 participants include UG, PG, PhD scholars, faculty members from all the three campuses.
  • Two-day workshop on Introduction to MATLAB for M.Tech Engineering Design and Automotive Engineering students. March 8-9, 2016.

Expert Lecture Delivered

  • Delivered a talk on “Energy Harvesting from Vibration Systems” College of Engineering, Kannur, Kerala on August 26, 2016.
  • Delivered a lecture on “Fundamentals of Nonlinear Vibrations”, AICTE sponsored faculty development program on Fundamentals of Vibration- Measurement, Analysis and Control at St. Joseph Engineering College, Chennai on November 6, 2017.

Projects

Publications

Journal Article

Year : 2019

Parametric study and optimization of linear and nonlinear vibration absorbers combined with piezoelectric energy harvester

Cite this Research Publication : Raj, P.V.R., Santhosh, B., “Parametric study and optimization of linear and nonlinear vibration absorbers combined with piezoelectric energy harvester”, International Journal of Mechanical Sciences, vol.152, pp-268-279, March 2019, (Scopus International Journal).

Publisher : International Journal of Mechanical Sciences

Year : 2019

Nonlinear dynamics of asymmetric bistable energy harvesting systems

Cite this Research Publication : Dr. Santhosh B., “Nonlinear dynamics of asymmetric bistable energy harvesting systems”, In AIP Conference Proceedings, vol. 2134, 2019.

Publisher : AIP Conference Proceedings

Year : 2018

Dynamics and performance evaluation of an asymmetric nonlinear vibration isolation mechanism

Cite this Research Publication : Dr. Santhosh B., “Dynamics and performance evaluation of an asymmetric nonlinear vibration isolation mechanism”, Journal of the Brazilian Society of Mechanical Sciences and Engineering, vol. 40, no. 169, 2018.

Publisher : Journal of the Brazilian Society of Mechanical Sciences and Engineering

Year : 2016

Energy Harvesting from Nonlinear Vibration Absorbers

Cite this Research Publication : Dr. Santhosh B. and Subin Das, “Energy Harvesting from Nonlinear Vibration Absorbers”, Procedia Engineering, vol. 144, pp. 653-659, 2016.

Publisher : Procedia Engineering.

Year : 2016

Discontinuity induced bifurcations in nonlinear systems

Cite this Research Publication : Dr. Santhosh B., S Narayanan, and C Padmanabhan, “Discontinuity induced bifurcations in nonlinear systems”, Procedia IUTAM, vol. 16, pp. 219-227, 2016.


Publisher : Procedia IUTAM,

Year : 2015, 2016

Discontinuity induced bifurcations in Nonlinear Systems.

Publisher : IUTAM Symposium on Analytical Methods in Nonlinear Dynamics

Year : 2016

Energy Harvesting from Nonlinear Vibration Absorbers

Cite this Research Publication : Dr. Santhosh B. and Subin Das, “Energy Harvesting from Nonlinear Vibration Absorbers”, Procedia Engineering, vol. 144, pp. 653-659, 2016.

Publisher : Procedia Engineering,

Year : 2015, 2016

Discontinuity induced bifurcations in Nonlinear Systems.

Publisher : IUTAM Symposium on Analytical Methods in Nonlinear Dynamics

Year : 2015

Nonlinear Dynamics of Shrouded Turbine Blade System with Impact and Friction

Cite this Research Publication : Dr. Santhosh B., S Narayanan, and C Padmanabhan, “Nonlinear Dynamics of Shrouded Turbine Blade System with Impact and Friction”, Applied Mechanics and Materials, vol. 706, pp. 81-92, 2015.


Publisher : Applied Mechanics and Materials, Trans Tech Publ,

Year : 2014

Numeric-analytic solutions of the smooth and discontinuous oscillator

Cite this Research Publication : Dr. Santhosh B., C Padmanabhan, and S Narayanan, “Numeric-analytic solutions of the smooth and discontinuous oscillator”, International Journal of Mechanical Sciences, vol. 84, pp. 102–119, 2014.

Publisher : International Journal of Mechanical Sciences

Year : 2011

Periodic Response and Bifurcations of a Smooth and Discontinuous Oscillator by Harmonic Balance Method

Cite this Research Publication : Dr. Santhosh B., S Narayanan, and C Padmanabhan, “Periodic Response and Bifurcations of a Smooth and Discontinuous Oscillator by Harmonic Balance Method”, 7th International conference on Vibration Engineering and Technology of Machinery (VETOMAC VII). Shanghai, China, 2011.


Publisher : VETOMAC VII

Conference Paper

Year : 2020

Energy Harvesting Performance of Snap Through Oscillator with Time Varying Potential Function

Cite this Research Publication : K. Devarajan and Dr. Santhosh B., “Energy Harvesting Performance of Snap Through Oscillator with Time Varying Potential Function”, in International Conference on Engineering Vibration (ICoEV 2020), Aberdeen, Scotland, UK, 2020.


Publisher : International Conference on Engineering Vibration (ICoEV 2020),

Year : 2018

Parametric Study and Optimization of a Piezoelectric Energy Harvester from Flow Induced Vibration

Cite this Research Publication : P. Ashok, C. Jawahar Chandra, P. Neeraj, and Dr. Santhosh B., “Parametric Study and Optimization of a Piezoelectric Energy Harvester from Flow Induced Vibration”, in IOP Conference Series: Materials Science and Engineering, 2018, vol. 310.

Publisher : IOP Conference Series: Materials Science and Engineering

Year : 2018

Numerical solution for stick-slip oscillator with geometric non-linearity

Cite this Research Publication : Ratnesh Kumar Singh, K. Devarajan, and Dr. Santhosh B., “Numerical solution for stick-slip oscillator with geometric non-linearity”, in IOP Conference Series: Materials Science and Engineering, 2018, vol. 310.

Publisher : IOP Conference Series: Materials Science and Engineering

Year : 2018

Dynamics of a Single Degree of Freedom Clutch Damper System with Multiple Discontinuous Nonlinearities

Cite this Research Publication : Kabilan S, Vaishnav V, Gowtham E, and Dr. Santhosh B., “Dynamics of a Single Degree of Freedom Clutch Damper System with Multiple Discontinuous Nonlinearities”, in IOP Conference Series: Materials Science and Engineering, 2018, vol. 310.

Publisher : IOP Conference Series: Materials Science and Engineering,

Year : 2017

Entrainment in multi degree of freedom discontinuous system with application to disc brakes

Cite this Research Publication : Alwin Thomas, B. Balaram, and Dr. Santhosh B., “Entrainment in multi degree of freedom discontinuous system with application to disc brakes”, in Int. Conference on Vibration problems (ICOVP 2017), IIT Guwahati, 2017.

Publisher : Int. Conference on Vibration problems (ICOVP 2017)

Year : 2017

A comparative study on the primary system response and energy harvesting from linear and nonlinear tuned vibration absorbers

Cite this Research Publication : Rasil Raj P V and Dr. Santhosh B., “A comparative study on the primary system response and energy harvesting from linear and nonlinear tuned vibration absorbers”, in Int. Conference on Vibration problems (ICOVP 2017), IIT Guwahati, 2017.

Publisher : Int. Conference on Vibration problems (ICOVP 2017)

Year : 2017

Analysis of Radiator Mounting Bracket Design and Derivation of Transfer Function to Predict Modal Frequencies Based on Parametric Study

Cite this Research Publication : Pooja More, Dr. Santhosh B., and Amol Jain, “Analysis of Radiator Mounting Bracket Design and Derivation of Transfer Function to Predict Modal Frequencies Based on Parametric Study”, in Int. Conf. on advances in Materials and Manufacturing applications, IconAmma 2017, Amrita Vishwa Vidyapeetham, Bangalore, 2017.

Publisher : Int. Conf. on advances in Materials and Manufacturing applications, IconAmma 2017

Year : 2016

Dynamics of a Stable-quasi-zero-stiffness Isolator Mechanism using Multi Harmonic Balance Method

Cite this Research Publication : K. Mukund and Dr. Santhosh B., “Dynamics of a Stable-quasi-zero-stiffness Isolator Mechanism using Multi Harmonic Balance Method”, in International Conference on systems, energy and environment, (ICSEE 2016), College of Engineering, Kannur, Kerala, 2016.

Publisher : International Conference on systems, energy and environment, (ICSEE 2016).

Year : 2015, 2016

Discontinuity induced bifurcations in Nonlinear Systems.

Publisher : IUTAM Symposium on Analytical Methods in Nonlinear Dynamics

Year : 2016

Reduced order models of dry friction damped systems with contact interface model

Cite this Research Publication : Dr. Santhosh B. and .Narayanan, S., “Reduced order models of dry friction damped systems with contact interface model”, in XXIV ICTAM, Montreal, Canada , 2016.

Publisher : XXIV ICTAM

Year : 2015

Discontinuity induced bifurcation in nonlinear oscillators

Cite this Research Publication : Dr. Santhosh B., S Narayanan, and C Padmanabhan, “Discontinuity induced bifurcation in nonlinear oscillators”, in 12th Int. Conference on Vibration Problems (ICOVP-2015), IIT Guwahati, India, 2015.

Publisher : 12th Int. Conference on Vibration Problems (ICOVP-2015)

Year : 2015

Discontinuity induced bifurcations in higher dimension Filippov systems.

Cite this Research Publication : Dr. Santhosh B., S Narayanan, and C Padmanabhan, “Discontinuity induced bifurcations in higher dimension Filippov systems.”, in Int. Conference on Engineering Vibration (ICOEV 2015), Slovenia, 2015.

Publisher : Int. Conference on Engineering Vibration (ICOEV 2015)

Year : 2015, 2016

Discontinuity induced bifurcations in Nonlinear Systems.

Publisher : IUTAM Symposium on Analytical Methods in Nonlinear Dynamics

Year : 2014

Nonlinear Dynamics of a two degree of freedom Oscillator with a Snap Through Mechanism

Cite this Research Publication : Dr. Santhosh B., S Narayanan, and C Padmanabhan, “Nonlinear Dynamics of a two degree of freedom Oscillator with a Snap Through Mechanism”, in 8thEuropean Nonlinear Dynamics Conference (ENOC 2014), Vienna, Austria, 2014.

Publisher : 8thEuropean Nonlinear Dynamics Conference (ENOC 2014),

Year : 2012

Dynamics of Oscillators with Continuous and Discontinuous Nonlinearities by Harmonic Balance and Path following

Cite this Research Publication : Dr. Santhosh B., S Narayanan, and C Padmanabhan, “Dynamics of Oscillators with Continuous and Discontinuous Nonlinearities by Harmonic Balance and Path following”, in XXIII Int .Congress of Theoretical and Applied Mechanics (ICTAM 2012), Beijing, China, 2012.

Publisher : ICTAM 2012

Conference Proceedings

Year : 2021

Dynamics and Performance Analysis of a Nonlinear Energy Sink with Geometric Nonlinear Damping

Cite this Research Publication : R. Philip, Dr. Santhosh B., and Bipin Balaram, “Dynamics and Performance Analysis of a Nonlinear Energy Sink with Geometric Nonlinear Damping”, Second International Nonlinear Dynamics conference, (NODYCON). Sapienza University De Roma, 2021.

Publisher : Second International Nonlinear Dynamics conference, (NODYCON),

Year : 2011

Periodic response and bifurcations of a smooth and discontinuous oscillator by harmonic balance method

Cite this Research Publication : Dr. Santhosh B., S Narayanan, and C Padmanabhan, “Periodic Response and Bifurcations of a Smooth and Discontinuous Oscillator by Harmonic Balance Method”, 7th International conference on Vibration Engineering and Technology of Machinery (VETOMAC VII). Shanghai, China, 2011.

Publisher : 7th International conference on Vibration Engineering and Technology of Machinery (VETOMAC VII)

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