Thermal stress analysis on 2D C/SiC composites of thin-walled structure of anti-heat head cone

2017 3rd International Conference on Applied Materials and Manufacturing Technology

Zhang, Wei^1 ; Lv, Shengli^1

Science and Technology on UAV Laboratory, Northwestern Polytechnical University, Xi'an

710072, China^1

关键词: 2D C/SiC composites;    Finite element numerical models;    Heterogeneous materials;    Insulation structures;    Steady-state heat transfer;    Thermal protection;    Thermal stress calculation;    Transition zones;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/242/1/012008/pdf
DOI  :  10.1088/1757-899X/242/1/012008

来源: IOP

【 摘 要 】

The thermal protection performance of C/SiC composites can be improved by coating the thermal barrier coating on the surface of C/SiC composites.The wall heat flux density distribution of the 2D C/SiC composite thermal insulation structure at the front end of the hyper-sonic vehicle was calculated by steady state heat transfer at different Mach numbers in the atmosphere. In the thermal stress calculation, an effective finite element numerical model is established by the method of partitioning and based on the flexible gradient density method. The model was treated as heterogeneous materials which consists of C/SiC composite region, the coating zone and transition zone, and the results show that the maximum thermal stress appears near the end of the head cone.