热环境对复合材料加筋板高频声振响应的影响研究  

Effects of thermal environment on high-frequency vibroacoustic response of composite stiffened plate

作　　者：周长伟 党天骄 王鹏飞[1,2] 任方 刘振[1,2] ZHOU Changwei;DANG Tianjiao;WANG Pengfei;REN Fang;LIU Zhen(State Key Laboratory for Strength and Vibration of Mechanical Structure,Xi’an Jiaotong University,Xi’an 710049,China;Shaanxi Key Laboratory of Environment and Control for Flight Vehicle,School of Aerospace Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Beijing Institute of Structure and Environment Engineering,Beijing 100076,China)

机构地区：[1]西安交通大学复杂服役环境重大装备结构强度与寿命全国重点实验室,西安710049 [2]西安交通大学航天航空学院陕西省先进飞行器综合服役环境与控制重点实验室,西安710049 [3]北京强度环境研究所,北京100076

出　　处：《振动与冲击》2025年第3期278-283,290,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(u20b2002)。

摘　　要：该文以统计能量分析理论结合试验方法,以碳纤维加筋板为研究对象,探究了不同温度下的结构高频声振响应规律。首先,开展了热振试验并结合相关理论辨识了不同温度下的加筋板统计能量参数;然后,构建了温度影响下的加筋板高频声振耦合统计能量模型,进一步开展了基于混响室噪声载荷的常温加筋板动响应试验,验证了所建模型的准确性;最后,探究了温度对加筋板结构高频声振响应的影响规律。结果表明:温度升高将使得结构模态密度和内损耗因子呈现上升趋势;结构模态密度增大将使得结构声振响应增大,内损耗因子增大会使得结构响应减小;温度上升对结构高频范围内不同频率处声振响应影响不同,主要取决于该频率处模态密度和内损耗因子的增量大小。Here,using statistical energy analysis theory combined with experimental methods,taking carbon fiber reinforced plate the study object,structure high-frequency vibroacoustic responses under different temperatures were explored.Firstly,thermal-vibration tests were conducted and relevant theories were used to identify statistical energy parameters of reinforced plate under different temperatures.Then,a high-frequency acoustic-vibration coupled statistical energy model of reinforced plate under temperature influence was constructed.Furthermore,dynamic response tests of reinforced plate under room temperature based on reverberation chamber noise load were conducted to verify the correctness of the constructed model.Finally,effects of temperature on high-frequency vibroacoustic response of reinforced plate structure were explored.The results showed that increase in temperature can cause an upward trend of structure modal density and internal loss factor,increase in structural modal density can cause increase in structural acoustic-vibration responses,while increase in internal loss factor can cause decrease in structural response;effects of temperature rise on structure acoustic-vibration response at different frequencies within high-frequency range are different,they mainly depend on increments of modal density and internal loss factor at that frequency.

关 键 词：热效应 复合材料加筋板 统计能量分析 高频声振响应 

分 类 号：V414.1[航空宇航科学与技术—航空宇航推进理论与工程]