CAJ | 학술논문

声子晶体是近年来提出的一种新型功能材料,是一种由两种或多种材料组成的具有周期性结构和弹性波带隙的声学功能材料或结构,并且振动频率在声子晶体带隙范围内的振动会被抑制或禁止传播,它所具有的这种弹性波带隙特性为汽车车内噪声控制,特别是车内低频噪声控制提供了一种新的研究方法.在介绍了声子晶体的概念、基本特征及能带结构的基础上,阐述了声子晶体在振动与噪声控制领域的研究现状,同时对车内噪声的产生机理进行了分析,最后对声子晶体在应用于汽车车内降噪方面的研究做了展望.
성자정체시근년래제출적일충신형공능재료,시일충유량충혹다충재료조성적구유주기성결구화탄성파대극적성학공능재료혹결구,병차진동빈솔재성자정체대극범위내적진동회피억제혹금지전파,타소구유적저충탄성파대극특성위기차차내조성공제,특별시차내저빈조성공제제공료일충신적연구방법.재개소료성자정체적개념、기본특정급능대결구적기출상,천술료성자정체재진동여조성공제영역적연구현상,동시대차내조성적산생궤리진행료분석,최후대성자정체재응용우기차차내강조방면적연구주료전망.
Photonic crystal is a novel type of acoustic function materials with periodic elastic materials or periodic structures composed of two or more materials,within which the propagation of vibration and sound is prevented. This property provides a new way to control the vehicle internal noise,especially the internal low-frequency noise. The concept,basal characteristics and band structure of photonic crystals were introduced and its application in control of vibration and noise was expatiated. Meanwhile,the mechanism of the vehicle internal noise generated was analyzed. The prospect of photonic crystals application in the field of vehicle internal noise reduction was forecasted.