Fig. 1. Technical roadmap

Fig. 2. Schematic diagram of TMSR control rod channel tube structure and location

Fig. 3. Finite element model of TMSR control rod channel tube

Fig. 4. Mesh division schemes

Fig. 5. Load and boundary conditions of TMSR control rod channel tube

Fig. 6. Material parameter fitting of UNS N10003 alloy

Fig. 7. Buckling modes of TMSR control rod channel tube (color online)(a) Mode 1, (b) Mode 3, (c) Mode 5, (d) Mode 7

Fig. 8. The critical buckling load factors under different structural sizes (a) Different inner diameters, (b) Different wall thicknesses, (c) Different heights

Fig. 9. Equivalent stress and creep strain curves vs. time of TMSR control rod channel tube (color online)

Fig. 10. Equivalent stress of TMSR control rod channel tube (t=300 000 h) (color online)

Fig. 11. Creep strain of TMSR control rod channel tube (t=300 000 h) (color online)

Fig. 12. Creep buckling deformation of TMSR control rod channel tube (color online) (a) t = 0, (b) t = 300 000 h

Fig. 13. Relationship between creep buckling life and external pressure at different temperatures

Fig. 14. Relationship between creep buckling life and diameters at different temperatures

Fig. 15. Relationship between creep buckling life and wall thicknesses at different temperatures

Fig. 16. Relationship between creep buckling life and heights at different temperatures