Mechanical Engineering Seminar: Dr. Stephen A. Hambric

Title: Dr. Stephen A. Hambric will present "Fundamentals of Structural Acoustics"

Abstract:

This short tutorial on structural-acoustics will explain:
• How structures vibrate,
• How vibration patterns over a structure's surface radiate sound, and
• How vibrations are generated in structures impinged upon by sound waves.

We will explore basic wave equations; modes of vibration in beams, plates, and shells; mobility and impedance; structural damping; sound fields radiated by vibrations; sound transmission loss; and the basics of using numerical methods like Finite Element Analysis (FEA) and Boundary Element Analysis (BEA) to solve structural-acoustic problems.

Throughout the lecture, simple examples of vibrating structures interacting with sound fields will be used to illustrate structural-acoustic concepts. More details can be found in my Acoustics Today tutorials, available on my website: www.hambricacoustics.com

Bio:

Dr. Stephen A. Hambric is head of the Structural Acoustics Department at the Applied Research Lab at Penn State, a Professor in the Graduate Program in Acoustics, and Associate Director of the Penn State Center for Acoustics and Vibration (CAV). Prior to joining Penn State in 1996, Dr. Hambric worked for nine years in the Computational Mechanics Office at the Naval Surface Warfare Center, Carderock Division. Dr. Hambric has directed many numerical and experimental flow and structural acoustics research and development programs for the Navy, NASA, U.S. industry, and the U.S. Nuclear Regulatory Commission. He has authored or co-authored over 60 conference papers and 20 journal articles. He teaches courses in Structural Acoustics, and Writing for Acousticians on campus at Penn State, and also to off-campus students working in industry and government. He currently serves as Vice President of Technical Conferences for the Institute for Noise Control Engineering (INCE), on the Executive Committee of the ASME's Noise Control and Acoustics Division, and as an associate editor of ASME's Journal of Vibration and Acoustics. He is the General Chair of the Internoise 2012 conference, which will be held in New York City in August 2012.

For more information about Dr. Hambric, please visit http://www.personal.psu.edu/faculty/s/a/sah19/.

Hosted by Professor Rajendra Singh