中文摘要：

采用有限元模拟方法，在热循环条件下模拟计算了圆柱结构热障涂层系统应力场的演变情况，分析和讨论了热循环工作温度、陶瓷层厚度对应力场分布的影响。研究发现，在仅考虑热弹性变形的条件下，热循环工作温度和陶瓷层厚度主要影响涂层系统在保温阶段的应力场大小；在每次热循环冷却之后，系统中同一位置的残余应力值相等。对于圆柱体结构的热障涂层系统，由于材料参数不匹配而导致材料的环向应力远大于径向应力数值，因此在后续分析测试中建议重点关注其环向应力的演变。

英文摘要：

Stress evolution of cylindrical thermal barrier coating（TBC） system under thermal cycles is analyzed by finite element method（FEM）. The influence of service temperature and thickness of ceramic coating on stress distribution is discussed. The above factors mainly affect the stress distribution of the TBC during the holding period of thermal cycle under the condition of thermo-elastic deformation. Moreover, the residual stress of TBC system in the same location maintain constant after each thermal cycle. On the other hand, hoop stress in the TBC system is much larger than radial stress due to material properties mismatch. It is suggested that hoop stress evolution should be considered during thermal cycle.