Qualification: 
M.Tech
Email: 
n_tamilarasan@cb.amrita.edu
Phone: 
9486547106

Tamilarasan N. currently serves as Assistant Professor (Sr. Gr.) at Department of Mechanical Engineering, School of Engineering, Coimbatore Campus. His areas of research include FEM, Mesh Free Methods, Fracture Mechanics and Vibration.

Education

  • 2007: M. Tech. Engineering Design
    Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, 
  • 2002: B. E. Mechanical Engineering
    Jayaram College of Engineering and Technology, Bharathidasan University, Trichy, 

Professional Appointments

Year Affiliation
August 2008 - Present Assistant Professor,  Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India

Thrust Area of Research

Smart Materials and Structures

Teaching/Research Interests

Major Subjects Taught

  • Dynamics of Machines
  • Finite Element Methods
  • Theory of Elasticity
  • Theory of Plates and Shells

Research Interests

  • Smart materials
  • Composite Materials

Publications

Publication Type: Conference Paper

Year of Publication Title

2020

S. L. S., Vishwanath, A., Nagelli, S. S., Prabhu, E., and N. Tamilarasan, “Low-cost data logging and telemetry system for All-Terrain Vehicle performance analysis”, in 2020 Second International Conference on Inventive Research in Computing Applications (ICIRCA), 2020.[Abstract]


Rapid advancements in the field of embedded systems have facilitated the development of cost-effective complex projects with innovative outcomes. These advancements also apply for the automotive racing domain in the form of digital data extraction and wireless communication. It is of utmost importance to have a system in racing vehicles that will cater real-time data to the race engineers using which the process of troubleshooting the vehicle in the pit can be aided. In this manuscript, a data logging and a telemetry system for an All-Terrain Vehicle (ATV) has been developed by Team Torpedo, the ATV racing team of Amrita School of Engineering, Coimbatore. The team participates in national amateur off-road racing competitions that see an attendance of over 250 reputed college teams from different parts of the country. This system is based on a low-cost embedded platform powered by an Arduino Mega 2560 microcontroller. Important parameters like speed, G forces, GPS coordinates, etc. are logged in a microSD card which is used for validating the ATVs design and standardize its performance. During the racing events, the collected data is wirelessly transmitted to the pit using the Zigbee protocol over a reasonably large distance. In the receiver's end, the data is graphically rendered for the race engineers to assess the ATV's real-time performance.

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2017

N. Tamilarasan, Dr. Thirumalini S., Nirmal, K., Ganapathy, K., Murali, K., and Srinath, H., “Design and Simulation of Ferrofluid Tactile Screen for Braille Interface”, in International Conference on Robotics and Automation for Humanitarian Applications, RAHA 2016 - Conference Proceedings, 2017.[Abstract]


The lack of eyesight is a severe obstacle faced by the blind and limits their access to technology. Developments in assistive technology can be traced from the implementation of braille through engraving and embossing the script. With the growth of digital age, braille is included in keyboards and number pads and more recently as mechanical refreshable braille displays with integrated audio systems [8]. However, such systems are extremely expensive to purchase and maintain. Existing displays have a very low resolution and are bulky [5]. This project explores developments in ferrofluids, a type of magnetorheological liquid, and its possible applications in a magnetically controlled display layer. Also, electromagnets are used instead of conventional neodymium magnets. Variations in the coil shape and base shape are also explored. The aim is to achieve dimensions closer to existing mechanical braille systems. The models considered are analysed on COMSOL Multiphysics software [3]. Considerable improvement is achieved in reducing size to improve resolution. There is vast scope for further research in improving the system for commercial viability.

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Publication Type: Journal Article

Year of Publication Title

2019

A. M. Khedkar and N. Tamilarasan, “Design and hysteresis behavior of magneto-rheological disc brake for hatchback segment commercial car”, International Journal of Engineering and Advanced Technology, vol. 8, no. 5, pp. 2534-2539, 2019.[Abstract]


In this paper, an optimized design for hatchback segment of commercial vehicle is considered to find the optimum dimensions for the MR brake, with the help of optimization tools and existing conventional dimensions. An axisymmetric model is generated using COMSOL based on the dimensions available in the existing literature and braking torque is calculated using Bingham plastic model. It is a coupled system i.e. Electric field – Magnetic field – Mechanical action. Initially the existing design from literature survey is taken as base model for the MR brake and the design is changed according to the dimensions found on the basis of the conventional dimensions of disc brake accessible in the existing hatch-back segment car. After finalizing the dimensions and MR fluid the four new design model for disc are considered for simulations. The brake are used several time during the dynamic condition so as to test the reliability of the Magneto-Rheological brake, the hysteresis analysis is also needed to be carried out by simulating it in a dynamic environment. For hysteresis analysis MATLAB Simulink is used for simulating the brake in dynamic condition with the help of Bouc-Wen Model. The main aim is to achieve a braking torque of MR brake near to the existing braking system of the vehicle. © BEIESP.

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2019

R. K. Patnaik and N. Tamilarasan, “Stability analysis of magneto-rheological damper for suspension of commercial vehicles”, International Journal of Engineering and Advanced Technology, vol. 8, no. 6, pp. 667-676, 2019.[Abstract]


This paper aims at improving the efficiency of magneto-rheological dampers, which utilizes a smart material in the form of magneto-rheological fluid, over the typical-build conventional dampers. The proposed design has been modeled for its implementation in commercial vehicles which extensively relies on conventional shock-absorbers for the safety and comfort of its occupants, considering the space available for mounting the system. Dimensional constraints based on commercial vehicles pertaining to the hatchback segment have been taken in COMSOL® and analyzed to generate a considerable amount of damping force for realizable inputs. As the analysis requires a profound consideration of highly coupled physics interface, COMSOL® Multi-physics is chosen as the relevant platform which makes it suitable to fulfill the criteria at hand. The damping forces achieved in the model are determined based on the linear Bingham model and the non-linear hysteretic Bouc-Wen model. A rigorousanalysis was conducted to realize the variation in damping force values on account of the hysteresis losses induced in the system. Optimization based on Taguchi’s mixed level design approach is used to attain the optimal design parameters of MR damper. MRF-140 CG fabricated by Lord Corporation is adopted to introduce the rheological effect of MR fluid on the proposed model. ©BEIESP.

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2018

K. R. Unni and N. Tamilarasan, “Design and analysis of a magneto-rheological damper for an all terrain vehicle”, IOP Conference Series: Materials Science and Engineering, vol. 310, no. 1, 2018.[Abstract]


A shock absorber design intended to replace the existing conventional shock absorber with a controllable system using a Magneto-rheological damper is introduced for an All Terrain Vehicle (ATV) that was designed for Baja SAE competitions. Suspensions are a vital part of an All Terrain Vehicles as it endures various surfaces and requires utmost attention while designing. COMSOL multi-physics software is used for applications that have coupled physics problems and is a unique tool that is used for the designing and analysis phase of the Magneto-rheological damper for the considered application and the model is optimized based on Taguchi using DOE software. The magneto-rheological damper is designed to maximize the damping force with the measured geometric constraints for the All Terrain Vehicle. © Published under licence by IOP Publishing Ltd.

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2018

L. K. George, N. Tamilarasan, and Thirumalini, S., “Design and analysis of magneto rheological fluid brake for an all terrain vehicle”, IOP Conference Series: Materials Science and Engineering, vol. 310, p. 012127, 2018.[Abstract]


This work presents an optimised design for a magneto rheological fluid brake for all terrain vehicles. The actuator consists of a disk which is immersed in the magneto rheological fluid surrounded by an electromagnet. The braking torque is controlled by varying the DC current applied to the electromagnet. In the presence of a magnetic field, the magneto rheological fluid particle aligns in a chain like structure, thus increasing the viscosity. The shear stress generated causes friction in the surfaces of the rotating disk. Electromagnetic analysis of the proposed system is carried out using finite element based COMSOL multi-physics software and the amount of magnetic field generated is calculated with the help of COMSOL. The geometry is optimised and performance of the system in terms of braking torque is carried out. Proposed design reveals better performance in terms of braking torque from the existing literature.

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Key Responsibilities at Amrita Vishwa Vidyapeetham

  • BAJA Faculty Advisor

Membership in Professional Bodies

  • SAEINDIA