Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (5): 50601-050601.doi: 10.11889/j.0253-3219.2017.hjs.40.050601

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Four-point bending experiment and simulation of dog bone nuclear graphite

GU Chenguang1,2, ZENG Guangli1, YANG Xiong1,2, ZHONG Yang1,2, DING Dong1,2   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-01-10 Revised:2017-02-14 Online:2017-05-10 Published:2017-05-03
  • About author:10.11889/j.0253-3219.2017.hjs.40.050601
  • Supported by:

    Supported by Ministry of Harman Resources and Social Security of People's Republic of China (No.Y419016031)

Abstract:

Background: Nuclear graphite is a key material in Molten Salt Reactor (MSR). And fracture property is one of the most important parameters of the nuclear graphite. Purpose:This study aims at the failure stress of the graphite and to develop a numerical model to simulate the experiment. Methods: The four-point bending test was employed to find the failure stress of the dog bone graphite. And a numerical model has been developed for simulation by using the extended finite element method (XFEM). Results: The failure stress of NG-CT-10 dog bone nuclear graphite has been investigated through the four-point bending test, and the experiment results are in accord with the numerical simulation results. Conclusion: The numerical model in XFEM can accurately simulate the fracture process of the nuclear graphite, and the fracture criterion can be determined accordingly for nuclear graphite.

Key words: Nuclear graphite, Failure stress, XFEM, Numerical simulation

CLC Number: 

  • TL99