温度变化对包带装置预紧力影响分析与验证

发布时间：2019-01-30 13:34

【摘要】：为研究温度变化对包带装置(CBD)预紧力的影响,提出包带装置温度影响系数计算方法:解析法和基于ABAQUS软件的仿真计算方法,并通过包带装置温度试验对提出的方法进行校验。结果表明:由解析法得到的结果与试验值偏差在5%以内;由仿真计算得到的结果与试验值偏差在15%左右,针对这一偏差,通过将仿真计算结果乘以1.15倍修正系数来对仿真计算方法进行修正。将研究结果应用于包带装置预紧力计算,在传统的包带装置预紧力计算公式中增加温度补偿项,提出了含温度影响的包带装置预紧力计算公式,可保证在最低温度环境下,包带装置预紧力仍然可以满足星箭力学承载要求、星箭连接要求;本文也提出在最高温度环境下,包带装置预紧力达到最大值,这为包带装置强度校核提供计算依据。
[Abstract]:In order to study the effect of temperature change on (CBD) pretightening force, a calculation method of temperature influence coefficient of tape wrapping device is presented, which includes analytical method and simulation method based on ABAQUS software. The proposed method is verified by the temperature test of the belt wrapping device. The results show that the deviation between the analytical results and the experimental values is less than 5%. The deviation between the simulation result and the experimental value is about 15%. In view of this deviation, the simulation calculation method is modified by multiplying the simulation result by 1.15 times the correction coefficient. The research results are applied to the calculation of pretightening force of tape wrapping device. The temperature compensation term is added to the traditional formula for calculating preload force of tape wrapping device. A formula for calculating preload force of tape wrapping device with influence of temperature is put forward, which can guarantee the calculation of preload force in the lowest temperature environment. The pretightening force of the belt wrapping device can still meet the requirements of the mechanical loading of the star arrow and the connection of the star arrow. In this paper, it is also proposed that the pretightening force of the cladding device reaches the maximum value at the highest temperature, which provides the basis for the strength checking of the cladding device.
【作者单位】：上海宇航系统工程研究所;
【分类号】：V444

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