Acoustic Metamaterials for NVH Control

This course explains the principles and engineering concepts of acoustic and elastic metamaterials used for vibration and noise (NVH) control, with particular reference to automotive and electric vehicle systems.

The content is based on the instructor’s learning developed over approximately ten years, through engineering experience, continuous technical reading, and personal research in acoustics, vibrations, and structured materials. The explanations reflect how these concepts are commonly understood and applied in engineering practice, rather than presenting experimental results or proprietary methods.

The course begins with fundamental topics such as acoustic and elastic metamaterials, bandgaps, dispersion behavior, unit cell design, and homogenization techniques. It then progresses into wave propagation physics, local resonance mechanisms, effective mass density, and scattering and mode conversion in periodic media. These concepts are connected to practical NVH contexts including EV powertrains, gearboxes, cabin sound transmission, and structural vibration paths.

Later sections discuss how metamaterials are conceptually designed and analyzed using tools such as COMSOL and Abaqus, how topology optimization and parametric studies are used to tune bandgaps, and how these structures are fabricated and integrated into real components. These tools and methods are explained only at a conceptual and workflow level, to provide engineering understanding rather than hands-on instruction.

This is an audio-only course. All slides are explained through detailed narration to help learners build physical intuition and conceptual clarity.
There are no software demonstrations, simulations, CAD models, numerical examples, or laboratory content included in this course.

This course is intended for learners who wish to understand how acoustic metamaterials work, why they are used, and where they are applicable. If you are looking for step-by-step simulation tutorials, downloadable models, or experimental demonstrations, this course may not be suitable for your expectations.

Learners are encouraged to review this description carefully to ensure that the format and scope of the course align with their learning objectives before enrolling.