High Power Laser and Particle Beams, Volume. 36, Issue 3, 036001(2024)

Development of mechanical property analysis program for space thermionic fuel element

Wenyu Yang1, Xiang Chai1,2、*, Enping Zhu1, and Xiaojing Liu1,2
Author Affiliations
  • 1College of Smart Energy, Shanghai Jiao Tong University, Shanghai 200240, China
  • 2School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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    Figures & Tables(15)
    Overall operating process and main modules of the program
    Radial sectional view of the thermionic fuel element
    Calculation process of the mechanical solution module
    Experimental-simulation comparison of intra-granular gaseous swelling
    Experimental-simulation comparison of inter-granular gaseous swelling
    Comparison of the elastic stress distribution
    Comparison of the thermal stress distribution
    Variation of fuel elements radial size with operation time
    Variation of fuel pellet strain with operation time
    Deformation of the fuel pellet
    Deformation of the emitter
    Contact pressure and outer surface movement rate of fuel pellet after contact
    Variation of equivalent stress of emitter with operation time after contact
    • Table 1. Constants of the model

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      Table 1. Constants of the model

      ${K_1}/{{\text{K}}^{-{{1}}}}$${K_2}$${K_3}$${E_D}{\text{/J}}$
      $9.80 \times {10^{ - 6}}$$2.61 \times {10^{ - 3}}$$3.16 \times {10^{ - 1}}$$1.32 \times {10^{ - 19}}$
    • Table 2. Main parameters of the case

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      Table 2. Main parameters of the case

      elastic modulus/GPaPoisson’s ratioouter diameter of cylinder/mminner diameter of cylinder/mmexternal surface pressure/MPainternal surface pressure/MPa
      1970.365.40.1010.028
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    Wenyu Yang, Xiang Chai, Enping Zhu, Xiaojing Liu. Development of mechanical property analysis program for space thermionic fuel element[J]. High Power Laser and Particle Beams, 2024, 36(3): 036001

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    Paper Information

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    Received: Nov. 1, 2023

    Accepted: Jan. 23, 2024

    Published Online: Mar. 20, 2024

    The Author Email: Xiang Chai (xiangchai@sjtu.edu.cn)

    DOI:10.11884/HPLPB202436.230388

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