Noise, Vibration and Harshness II (ME7263)

Course Description

This graduate course, the second in the Noise Vibration and Harshness (NVH) series, uses an innovative case study approach to  enhance analysis of current NVH concepts and issues. Weekly lectures are supplemented by bi-weekly group discussions on important NVH issues.  A project on a current NVH topic is required.

NVH II, a 4 credit-hour course, continues the integrated case study approach of vibrations, acoustics, signal processing and dynamics with focus on experimental and design methods.  A 3 credit-hour version (ME7262) also is available.

A bachelor’s degree in mechanical or electrical engineering is required as well as completion of the NVH I course and NVH Math Prep required unless waived by professor Singh.

NVH2

Goals

Upon completion of this course participants will be able to:

  • Understand vehicle noise and vibration sources: friction induced sources (complex eigensolutions, driveline judder case study and stability issues, brake sequel, groan and judder case studies); clearance induced sources (design solutions; transmission rattle and vehicle clunk); aerodynamic sources (vortex shedding, vehicle tire, antenna and mirror case studies)
  • Conduct modal testing and beam vibrations: material selection issues and boundary conditionsmodal testing procedures; visco-elastic damping and modal radiation
  • Apply advanced topics: mobility synthesis method; lumped parameters and 3D acoustic models
  • Develop a course project on an advanced NVH topic

Faculty

Raj Singh
Raj Singh, academy (emeritus) professor of mechanical engineering at The Ohio State University, held the Donald Glower chair for 13 years. He is a senior fellow at Ohio State’s Center for Automotive Research. Singh served as director, NSF I/UCRC Smart Vehicle Concepts Center for 11 years and now directs the Acoustics and Dynamics Laboratory. His research interests are: acoustics, machine dynamics, vibrations, non-linear dynamics and signal processing. Over the past two decades he has directed over $18 million of sponsored research and grant programs. Singh has published over 500 papers and advised 46 PhD and 77 MS students.