摘要
采用能量有限元分析(EFEA)法,建立某仪器舱结构的能量有限元模型,并对其进行了声振环境的预示。将EFEA与统计能量分析(SEA)及实验测试结果进行了比较,在一定的频域内,能量有限元方法得到了较好的预示结果,与预期结果相符。相对于传统SEA方法,EFEA还可以得到响应的空间分布。该研究对仪器舱结构的EFEA建模及分析,为工程上对复杂结构声振环境预示提供了新的思路。
The energy finite element analysis(EFEA)model of an instrument cabin structure was established,and the acoustic-vibration environment was predicted.The results by the EFEA were compared with those by the statistical energy analysis(SEA)and by the experiments.In certain frequency range,good prediction results could be obtained by the EFEA,which are in agreement with the expectations.Besides,compared with the traditional SEA method,the EFEA can also get the spatial distribution of the responses.The modeling and analysis of the instrument cabin structure by the EFEA offers a new idea for the acoustic-vibration environment prediction of complex structures in engineering.
作者
王怀志
于开平
张宗强
曾耀祥
王旭
WANG Huaizhi;YU Kaiping;ZHANG Zongqiang;ZENG Yaoxiang;WANG Xu(Harbin Institute of Technology,Harbin 150001,China;Xi’an Aerospace Propulsion Testing Technology Research Institute,Xi’an 710025,China;Beijing Institute of Space System Engineering,Beijing 100076,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2019年第10期143-148,共6页
Journal of Vibration and Shock
关键词
能量有限元
统计能量
声振环境
仪器仓
energy finite element
statistical energy
acoustic-vibration environment
instrument cabin
