摘要
提出了2种夹芯复合材料基座结构的设计方案,建立了夹芯复合材料基座数值分析模型;应用有限元法方法,对夹芯复合材料基座结构进行了优化设计;制作了2种夹芯复合材料基座模型,并进行了静刚度试验和计算分析;设计了偏心电机和电磁激振器激振的2种隔振试验系统,分别对夹芯复合材料基座模型进行了激振试验;通过频率响应分析了基座的固有特性;比较了2种激振方案下基座的振级落差和插入损失,结果表明夹芯复合材料基座具有较好的隔振效果,能够有效衰减高频驻波。
A design method of sandwich composite base is proposed in this paper. The numerical models of sandwich base are built, and the structure of base is optimized. Two sandwich composite bases are manufactured, and the static stiffness is calculated by experiments and FEM method. The effect of vibration isolation is measured by eccentricity vibrator system and electromagnetic vibrator system. The inherent characteristic of sandwich composite bases is analyzed. The vibration level difference and insertion loss are compared in different vibrator systems. The results indicate that the sandwich base is provided with superiority vibration isolation effect and enable efficient attenuation of the standing wave in high frequency.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2009年第16期19-22,39,共5页
Journal of Wuhan University of Technology
基金
国防重点预研项目
海军工程大学自然科学基金
关键词
夹芯复合材料
基座
隔振效果
振级落差
插入损失
sandwich composite
base
isolation effect
vibration level difference
insertion loss
