控制力作用柔性喷管动力响应研究
Dynamic Response Study of Flexible Nozzle in a Solid Rocket Motor
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摘要: 选择某锥筒式扩张段柔性喷管作为目标,用弹簧模型取代柔性接头结构,运用结构动力有限元方法,纽马克差分格式,对结构模型进行了动力载荷作用下的响应分析,获得了三角波、正弦波和反正弦波三种激励下的结构响应结果。Abstract: Based on the dynamic finite element method of structures,the response analysis of a flexible nozzle having a cone cylinder shaped divergent section is presented.The flexible joint is simply treated as a distributed spring and to which the Newmark difference method is applied.The numerical results are obtained when triangular wave excitation,sine wave excitation and arcsine wave excitation are exerted correspondingly.
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Key words:
- aerospace propulsion system /
- flexible nozzle /
- dynamic responses /
- finite element method
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