不同温度下固体火箭发动机粘接界面振动试验
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Vibration Test of Bonding Interface of Solid Rocket Motorat Different Temperatures
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    摘要:

    为解决陆上运输过程中固体发动机推进剂/衬层粘接界面在温度、振动载荷同时作用下的损伤问题,以试 验的方式研究振动载荷对粘接界面的影响。给出试验试件和不同温度下粘接试件的加速振动试验设计,确定不同温 度下加速振动试验方案,总结试件失效规律,分析试件力学性能随振动时间、温度间的变化关系,并从细观角度解 释温振载荷造成粘接界面性能下降的原因。结果表明,当环境温度越高,抗拉强度下降越快;当温度升高,振动时 间增加时,界面处颗粒脱湿程度加剧,更易出现裂纹。

    Abstract:

    In order to solve the problem of the damage of the solid motor propellant/liner bonding interface under the simultaneous action of temperature and vibration load during land transportation, the effect of vibration load on the bonding interface was studied by experiment. The accelerated vibration test design of the test specimen and the bonded specimen at different temperatures is given, the accelerated vibration test plan at different temperatures is determined, the failure rule of the specimen is summarized, and the relationship between the mechanical properties of the specimen and the vibration time and temperature is analyzed. Then, the reasons for the degradation of the bonding interface performance caused by the temperature vibration load are explained from a mesoscopic perspective. The results show that when the ambient temperature is higher, the tensile strength decreases faster; when the temperature increases and the vibration time increases, the degree of particle dewetting increases and cracks are more likely to appear.

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徐伯起.不同温度下固体火箭发动机粘接界面振动试验[J].,2021,40(9).

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历史
  • 收稿日期:2021-06-04
  • 最后修改日期:2021-07-26
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  • 在线发布日期: 2021-09-22
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