摘要
依据混合方法的基本原理,将计算模型划分为统计子系统和确定子系统,并给出混合方法的系统方程.应用能量平衡原理及互易原理,求解系统方程的能量,进而获得混合计算模型的响应预报.与统计能量法相比,该计算模型具有相对较少的自由度、较高的计算效率和精度.数值计算和模型试验结果表明:阻振质量基座对双层圆柱壳结构具有明显的隔振特性,采用含阻振质量的基座结构能有效阻隔结构中振动波的传递.
Based on hybrid FE SEA method, the structural model was divided into statistical systems and deterministic systems, and the system equations of hybrid method were given. The system energy was solved by using energy-balance method and reciprocity relationship. Then the response of hybrid FE-SEA model was received. Compared with statistic energy analysis method, the hybrid method with relatively few degrees of freedom and yielded a high accuracy with a smaller computational effort. The influence of vibration isolation mass on the vibration acceleration level of structural model was researched. It is proved that vibration isolation masses have a good effect on depressing structure-borne sound propagation from numerical computation analysis and experimental study.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第5期50-53,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(50779007)
国防基础科研项目(B2420110011)
中央高校基本科研业务费专项基金资助项目(HEUCF110119)
关键词
阻振质量
统计能量法
混合法
隔振特性
圆柱壳
blocking mass
statistical energy method
hybrid method
vibration isolation charaacteristics
cylindrical shell
