摘要
针对某碳陶双基体复合材料的冲压发动机燃烧室衬套结构,在缺少复合材料机械性能参数的情况下,提出一种振动分析的工程实用方法.建立了衬套结构的有限元模型,通过固有振动特性和随机载荷环境中的振动响应计算分析,对结构的动力学设计进行评估,为复合材料壳结构的振动分析以及冲压发动机中典型壳结构的动力学设计和评估提供参考.
An effective engineering method was put forward to solve the dynamical problems of a ramjet combustion chamber liner made of C/C-SiC composite materials, in the absence of mechanical performance parameters of materials. The finite element model of liner was erected, and natural characteristics and vibration responses caused by random excitation were calculated. Then the design level was evaluated based on dynamical thesis. The study has a great reference value for vibration analysis on shell structure made of composite materials and dynamical design on shell structure used in ramjet.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2011年第5期1142-1147,共6页
Journal of Aerospace Power
关键词
复合材料
壳结构
振动
有限元分析
谱分析
composite materials
shell structure
vibration
finite element analysis
spectrum analysis
