摘要
为研究某固体发动机在值班环境下承受的波浪振动对推进剂/衬层粘接界面的影响,建立了某型固体发动机等尺寸模型,模拟了发动机固化降温和振动两个连续过程。结果表明,固化降温过程中,推进剂/衬层粘接界面处Mises应力分布会出现分层,最终形成多个应力环形分布带,由于人工脱粘结构的设计,界面剪应力在头部和尾部区域最大,中间段最小;固体发动机在振动初期界面应力变化剧烈,振幅变化稳定后,最大界面剪应力始终位于头部,雨流统计结果显示,最大剪应力变幅主要分布在0kPa^0.5kPa范围内,最大剪应力均值分布在30kPa^31KkPa范围内。
In order to study the influence of the wave vibration of a solid rocket motor on the propellant/liner bonding interface under the ocean environment,a size model of a solid rocket motor is established,which simulates two continuous processes of curing and cooling and vibration of the motor. The results show that during the curing and cooling process,the distribution of Mises stress at the interface of the propellant/liner layer will be stratified,and finally a plurality of stress annular distribution bands will be formed. Due to the design of the artificial debonding layer,the interfacial shear stress is the largest in the head and tail regions,and the middle segment is the smallest. The initial stress of the engine changes sharply at the initial vibration. After the amplitude change is stable,the maximum interface shear stress is always in the head. The statistical results of rainflow show that the maximum shear stress amplitude is mainly distributed in 0 kPa^0.5 kPa,and the maximum shear stress is distributed in 30 kPa^31 kPa.
作者
刘磊
李金飞
LIU Lei;LI Jinfei(College of Coast Defense,Naval Aviation University,Yantai 264001)
出处
《舰船电子工程》
2020年第7期194-198,共5页
Ship Electronic Engineering
关键词
振动
固体发动机
粘接界面
vibration
solid rocket motor
bonding interface
