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Dr. Santhosh B.

Asst. Professor

Dr. Santhosh B. currently serves as Assistant Professor (SG) 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.

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

Dr. Santhosh B. currently serves as Assistant Professor (SG) 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

Conference Paper

Energy Harvesting from Nonlinear Vibration Absorbers

Authors : Dr. Santhosh B., Subin Das

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

Discontinuity induced bifurcation in nonlinear oscillators

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

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

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

Authors : Dr. Santhosh B., K. Mukund

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

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

Authors : Dr. Santhosh B., Alwin Thomas, and B. Balaram

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

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

Authors : Dr. Santhosh B., Rasil Raj P V

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

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

Authors : Dr. Santhosh B., Pooja More, and Amol Jain

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

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

Authors : Dr. Santhosh B., P. Ashok, C. Jawahar Chandra, and P. Neeraj

Publisher : IOP Conference Series: Materials Science and Engineering

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

Authors : Dr. Santhosh B., Ratnesh Kumar Singh, and K. Devarajan

Publisher : IOP Conference Series: Materials Science and Engineering

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

Authors : Dr. Santhosh B., Kabilan S, Vaishnav V, and Gowtham E

Publisher : IOP Conference Series: Materials Science and Engineering

Nonlinear Dynamics of Shrouded Turbine Blade System with Impact and Friction

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

Publisher : 11th Int. Conference on Vibration Problems (ICOVP-2013)

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

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

Publisher : 8thEuropean Nonlinear Dynamics Conference (ENOC 2014)

Discontinuity induced bifurcations in higher dimension Filippov systems.

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

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

Discontinuity induced bifurcations in Nonlinear Systems.

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

Publisher : IUTAM Symposium on Analytical Methods in Nonlinear Dynamics

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

Authors : Dr. Santhosh B., Narayanan, S

Publisher : XXIV ICTAM

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

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

Publisher : XXIII Int .Congress of Theoretical and Applied Mechanics (ICTAM 2012)

Conference Proceedings

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

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

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

Journal Article

Numeric-analytic solutions of the smooth and discontinuous oscillator

Authors : Dr. Santhosh B., C Padmanabhan, and S Narayanan

Publisher : International Journal of Mechanical Sciences

Energy Harvesting from Nonlinear Vibration Absorbers

Authors : Dr. Santhosh B., Subin Das

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

Dynamics and performance evaluation of an asymmetric nonlinear vibration isolation mechanism

Authors : Dr. Santhosh B.

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

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

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

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

Nonlinear Dynamics of Shrouded Turbine Blade System with Impact and Friction

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

Publisher : 11th Int. Conference on Vibration Problems (ICOVP-2013)

Discontinuity induced bifurcations in Nonlinear Systems.

Authors : Dr. Santhosh B., S Narayanan, and C Padmanabhan

Publisher : IUTAM Symposium on Analytical Methods in Nonlinear Dynamics

Nonlinear dynamics of asymmetric bistable energy harvesting systems

Authors : Dr. Santhosh B.

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