CAJ | 학술논문

采用统计能量分析法对某型号火箭整流罩的内噪声环境进行分析，预示与该型号火箭整流罩相似的结构内噪声和振动环境，研究整流罩直径和长度的变化对内噪声和振动环境的影响，同时给出整流罩内噪声与自身结构振动响应之间的关系曲线。最后，依据该统计能量分析模型分析了采用在整流罩内壁粘贴多孔吸声材料降噪措施的效果，比较研究多种泡沫、纤维材料的降噪效果，以及材料在内壁不同粘贴方式对降噪的影响。给出的噪声振动环境预示结果以及内敷阻尼材料的降噪措施，可为大型运载火箭整流罩的减振降噪问题提供技术支撑。
채용통계능량분석법대모형호화전정류조적내조성배경진행분석，예시여해형호화전정류조상사적결구내조성화진동배경，연구정류조직경화장도적변화대내조성화진동배경적영향，동시급출정류조내조성여자신결구진동향응지간적관계곡선。최후，의거해통계능량분석모형분석료채용재정류조내벽점첩다공흡성재료강조조시적효과，비교연구다충포말、섬유재료적강조효과，이급재료재내벽불동점첩방식대강조적영향。급출적조성진동배경예시결과이급내부조니재료적강조조시，가위대형운재화전정류조적감진강조문제제공기술지탱。
The noise environment of the payload fairing is analyzed through statistical energy analysis method, the noise and vibration environment of a structure similar to this fairing is predicted, the environment influence due to the change of fairing diameter and length is studied, then the relation curve between internal noise environment and structure vibration response is obtained. Finally, the method of pasting the porous sound-absorbing materials to the fairing inwall for noise reduction is analyzed, and the difference of noise reduction effect between foam and fiber materials is compared, also two different pasting manners of materials to the fairing inwall is proposed. The predicted results of noise and vibration environment and the noise reduction methods in this paper can be provided as a reference for engineering design.