20240038210. MULTIBAND FLEXURAL WAVE ABSORBERS simplified abstract (Toyota Motor Engineering & Manufacturing North America, Inc.)
Contents
MULTIBAND FLEXURAL WAVE ABSORBERS
Organization Name
Toyota Motor Engineering & Manufacturing North America, Inc.
Inventor(s)
Xiaopeng Li of Ann Arbor MI (US)
Taehwa Lee of Ann Arbor MI (US)
MULTIBAND FLEXURAL WAVE ABSORBERS - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240038210 titled 'MULTIBAND FLEXURAL WAVE ABSORBERS
Simplified Explanation
The abstract describes a flexural wave absorber that includes two L-shaped cantilever beams, one lossy acoustic black hole and one lossless acoustic black hole. These beams are placed on a mechanical structure and spaced apart by a predefined distance. Together, they are designed to asymmetrically absorb multiple frequencies of flexural waves within a frequency band of at least 2000 Hz.
- The L-shaped cantilever beam lossy acoustic black hole and the L-shaped cantilever beam lossless acoustic black hole are configured to absorb flexural waves.
- The lossy acoustic black hole and the lossless acoustic black hole are placed on the surface of a mechanical structure.
- The lossy and lossless acoustic black holes are spaced apart by a predefined distance.
- The combination of these two black holes allows for the absorption of a wide range of flexural wave frequencies within a 2000 Hz band.
Potential applications of this technology:
- Noise reduction in mechanical structures such as vehicles, buildings, or machinery.
- Vibration damping in structures subjected to flexural waves.
- Improving the acoustic performance of musical instruments.
Problems solved by this technology:
- Reduces the transmission of flexural waves, minimizing noise and vibrations.
- Provides a more efficient and effective method of absorbing flexural wave frequencies.
Benefits of this technology:
- Improved acoustic performance and noise reduction in various applications.
- Enhanced comfort and reduced fatigue in environments exposed to flexural waves.
- Increased efficiency and durability of mechanical structures.
Original Abstract Submitted
a flexural wave absorber includes an l-shaped cantilever beam lossy acoustic black hole disposed on a surface of a mechanical structure and an l-shaped cantilever beam lossless acoustic black hole disposed on the surface and spaced apart from the l-shaped cantilever beam lossy acoustic black hole a predefined distance. the l-shaped cantilever beam lossy acoustic black hole and the l-shaped cantilever beam lossless acoustic black hole, in combination, are configured to asymmetrically absorb a plurality of different frequencies of flexural waves within at least a 2000 hz frequency band acting on the mechanical structure. the l-shaped cantilever beam lossy acoustic black hole and the l-shaped cantilever beam lossless acoustic black hole can both include a projecting beam with an outer surface or an inner surface having power law profile.
