The residue contact pressure will be decreased after temperature cycle, the higher the working temperature, the lower the residue contact pressure, which has been proved by experiment.

• 研究表明，当复合管处于热加载状态时，复合管存在着极限工作温度；经过极限温度循环后，残余接触压力将减小，且极限温度越高，残余接触压力值越小；通过实验得到了验证。