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  • यांत्रिक अभियन्त्रण विभाग
  • Department of Mechanical Engineering
  • National Institute of Technology Jamshedpur

Dr. Ashok Kumar Mandal

Assistant Professor
Department of Mechanical Engineering
PhD, IIT Kanpur


  • Residential Address : Department of Mechanical Engineering
  • Phone Number :
  • Mobile Number : 9559754134
  • E-mail : ashok.me@nitjsr.ac.in

Area of Research Interest

  • Dynamics and Vibration
  • Nonlinear Vibration
  • Vibration of Continuous Media
  • Mechanics of Musical Instruments
  • Technology for Rural Development

Courses Taught

  • Engineering Graphics
  • Strength of Materials
  • Kinematics and Kinetics of Machine
  • Dynamics of Machine
  • Design of Mechanical Elements
  • Industrial Economics and Accountancy
  • Engineering Mechanics
  • Instrumentation and Control


  1. S. Chatterjee, A. K. Mandal : On the efficacy of an inertial active device with internal time-delayed feedback for controlling self-excited oscillations - Journal of Sound and Vibration vol:329 issue:13 pp:2435-2449 (2010)
  2. A. K. Mandal, P. Wahi : Natural frequencies, modeshapes and modal interactions for strings vibrating against an obstacle: Relevance to Sitar and Veena - Journal of Sound and Vibration vol:338 pp:42-59 (2015)
  3. A. K. Mandal, P. Wahi : Mode-locking and improved harmonicity for real strings vibrating in the presence of a curved obstacle - Nonlinear Dynamics vol:88 issue:3 pp:2203-2224 (2017)
  4. A. K. Mandal, P. Wahi : Modal interactions in strings vibrating against an obstacle: Relevance to musical instruments like sitar and tanpura - 11th International Conference on Vibration Problems, Lisbon, Portugal (2013)
  5. A. K. Mandal, P. Wahi : Equipartition of Modal Energy in a Stiff Vibrating String Due to a Finite Curved Boundary Obstacle - In: Gutschmidt S., Hewett J., Sellier M. (eds) IUTAM Symposium on Recent Advances in Moving Boundary Problems in Mechanics. IUTAM Bookseries ISSN : 978-3-030-13720-5 vol:34 pp:253-265 (2019)

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