We were honored to have Qijun Zhang from General Motors Corporation present at the SIMULIA Americas Users Conference, May 3-4, 2023 in Novi, Michigan.

Abstract: The infotainment and audio systems of vehicles are becoming increasingly important for consumers.  The traditional development process for the design of the loudspeakers and audio system involves providing a test vehicle to a supplier and having the supplier ‘tune’ the audio system for a given vehicle (and vehicle configuration).  In order to bring this process upfront and more integrated in the design process it is necessary to develop new methods for numerical simulation of the interior acoustic transfer function (ATF) over the entire audible frequency range.  This paper describes a joint project carried out by General Motors and Dassault Systemes that used wave6 to model the interior acoustics in a vehicle across the entire audible frequency range. The paper will discuss some of the functionality that was used in wave6 for this type of simulation along with comparisons of simulations with test data.

Bio: Qijun Zhang was born in China and graduated from Nanjing Institute of Technology. He then pursued a PhD in Mechanical Engineering from the University of Hong Kong. After completing his education, he joined the Noise and Vibration department at General Motors (GM) and has been with the company ever since. Currently, he serves as Sr Staff Engineer in the N&V VDDV group, and he is also the Global Simulation Owner.

As the Global Simulation Owner, Qijun is responsible for developing and refining N&V analysis processes and methods. He has made significant contributions to the development of advanced simulation technologies and methodologies that have also helped to improve GM's noise and vibration testing capabilities.

Qijun is a prolific researcher and has published over 50 papers and three books on various topics related to Noise and Vibration. Additionally, he has filed over 15 patents, trade secrets, and defensive publications, reflecting his expertise and innovation in the field.

His research interests include acoustic analysis, modal analysis, substructuring, transfer path analysis, and other aspects of vibration and noise control. Outside of work, Qijun enjoys hiking, playing tennis, and has recently taken up the sport of pickle ball.

Qijun's passion for his work, dedication to research, and diverse interests make him a well-rounded and highly respected engineer in the field of Noise and Vibration, and his contributions to the field have been very well recognized.