温度变化对包带装置预紧力影响分析与验证

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。

Analysis and Verification of the Effect of Temperature Variation on the Preload of Clamp Band Device

The preload of clamp band device (CBD) is calculated with the loads of the separation plane, and it changes with the environment temperature. In order to study the influence of temperature change on the preload of CBD, two methods are proposed, which are the analytical method and the simulation method based on ABAQUS software. Both methods are validated by the temperature experiments. Compared with the experiment results, the calculation deviation of analytical method is within 5%, the deviation of simulation method is 15% and the simulation method is corrected by being multiplied by a coefficient of 1.15. By the above method, the temperature coefficient of CBD is obtained. Based on it, a new preload formula is proposed, which takes into the effect of temperature on the preload. The formula guarantees that the satellite and launch vehicle can still be reliably connected at the lowest temperature. Besides, the preload of CBD reaches a maximum at the highest temperature, it can be used in strength calculation of the CBD.