超阻尼声学超材料结构单元及超宽带减振降噪复合超结构

• Format: Patent
• Language: Chinese
• Published: 19.08.2025
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; BLASTING; COLD ROOMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS; HEAT PUMP SYSTEMS; HEATING; ICE-BOXES; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; REFRIGERATION OR COOLING; REFRIGERATORS; SOUND-PRODUCING DEVICES; WEAPONS

本发明公开了一种超阻尼声学超材料结构单元及超宽带减振降噪复合超结构，超阻尼声学超材料结构单元包括摩擦壳体与共振元胞，摩擦壳体为至少一端开口的筒状结构，且摩擦壳体的开口端安装有盖板；共振元胞设在摩擦壳体内，共振元胞包括共振质量部以及设在共振质量部一端或两端的共振弹性部，且共振弹性部与摩擦壳体的端部或盖板相连；共振质量部与摩擦壳体的内侧壁之间具有超调间隙区，且在共振元胞被激发出共振运动时，共振质量部进入超调间隙区，并间歇性地与摩擦壳体的内侧壁产生摩擦运动，进而激发结构超阻尼特性。本发明应用于振动与噪声控制技术领域，能够显著提高低频宽带振动噪声抑制效果的同时，还能兼顾较大的刚度。