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	Probability assessment of graphite brick in the HTR-10
	Suyuan Yu ; Haiyan Li ; Chaoyang Wang ; Zhensheng Zhang
	2010-05-10 ; 2010-05-10
关键词	Practical/ creep elastic moduli finite element analysis fission reactor safety graphite mechanical strength moderators nuclear engineering computing subroutines thermal conductivity thermal expansion/ probability finite element assessment program graphite brick HTR-10 high temperature gas-cooled reactor-test module MARC nonlinear finite element code strength uncertainty user-defined subroutines irradiation thermal analysis subroutine irradiation static analysis subroutine probability assessment subroutine recompiled MARC program irradiation-induced changes thermal conductivity coefficient thermal expansion coefficient creep coefficient elastic modulus mechanical strength normal operating conditions cold shutdown conditions irradiation deformation creep effect structure failure probability 10 MW/ A2844 Fission reactor protection systems, safety and accidents A2850I Gas cooled reactors A2842P Fission reactor moderators A2842Q Fission reactor structural and shielding materials A8140L Deformation, plasticity and creep A8140J Elasticity and anelasticity A2841C Computing for fission reactor theory and design A6180 Radiation damage and other irradiation effects C7470 Nuclear engineering computing/ power 1.0E+07 W
中文摘要	A probability finite element assessment program was developed to evaluate the security of graphite components in the HTR-10 (10 MW High Temperature Gas-Cooled Reactor-test module), based on the MARC nonlinear finite element code and the strength uncertainty of the graphite material. Using user-defined subroutines (UDS), the irradiation thermal analysis subroutine, irradiation static analysis subroutine and probability assessment subroutine are embedded into the MARC program. The recompiled MARC program take into account irradiation-induced changes in graphite components such as the thermal conductivity coefficient, the thermal expansion coefficient, the creep coefficient, the elastic modulus, and the strength. The failure probabilities of the graphite components in the HTR-10, either under normal operating conditions or cold shutdown conditions, were evaluated. Additional analyses were done with the irradiation deformation increasing 20% and the creep coefficient decreasing 20%, to see the influence of irradiation deformation and the creep effect on the failure probability. The study showed that the probability finite element assessment method is an effective tool to assess the probability of structure failure.
语种	英语 ; 英语
出版者	Elsevier ; Netherlands
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/22939]
专题	清华大学
推荐引用方式 GB/T 7714	Suyuan Yu,Haiyan Li,Chaoyang Wang,et al. Probability assessment of graphite brick in the HTR-10[J],2010, 2010.
APA	Suyuan Yu,Haiyan Li,Chaoyang Wang,&Zhensheng Zhang.(2010).Probability assessment of graphite brick in the HTR-10..
MLA	Suyuan Yu,et al."Probability assessment of graphite brick in the HTR-10".(2010).

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