Coupled Neutronics-mechanics Analysis Method for Evaluation of Reactivity Change Due to Core Distortion in Sodium Fast Reactor

2021 ◽  
Author(s):  
Janos Bodi ◽  
Alexander Ponomarev ◽  
Konstantin Mikityuk
Keyword(s):  
Finite Element ◽  
Fast Reactor ◽  
Computer Aided Design ◽  
Reactor Core ◽  
Mechanical Analysis ◽  
Analysis Method ◽  
Reactivity Effect ◽  
Reactor Types ◽  
Verification Process ◽  
Set Up

Abstract In this paper, a reactor core mechanical analysis method is introduced to provide a tool to calculate the reactivity effect of the fuel subassembly displacement in the reactor core which is an important problem for reactor types such as the Sodium-cooled Fast Reactor (SFR). The presented method relies on the following two main steps: 1) Core deformation calculation through a Computer-Aided Design (CAD) based finite element solver and 2) Static neutronic simulation on the original undeformed and deformed core models with a Mode Carlo code to quantify the reactivity effect. The technique makes it possible to accurately simulate the deformed geometry of the reactor core and to use this deformed shape model directly in the neutronic analysis. The paper includes the verification process which was conducted to compare the accuracy of the finite element solver to the theoretical solutions regarding the deformation of a hexagonal subassembly. Moreover, the neutronic calculation accuracy has been demonstrated. Following this, a validation work has been performed on the Phenix Sodium-cooled Fast Reactor based on the data obtained from previous, end-of-life test, experimental set-up. This procedure proved the accuracy of the presented methodology for both the verification and the validation cases, giving the capability to assess the reactivity effect of a non-uniform core deformation in an SFR.

Loading Capacity Calculated and Finite Element Analysis for Trough Roller

2014 ◽  
Vol 607 ◽  
pp. 286-289
Author(s):  
Hai Fei Qiu ◽  
Song Lin Wu ◽  
Hong Cai Yang
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Mechanical Analysis ◽  
Component Part ◽  
Belt Conveyor ◽  
Element Analysis ◽  
Cross Section Area ◽  
Strength And Stiffness ◽  
Stress And Deformation ◽  
Set Up

Trough roller is an important component part on belt conveyor, the carrying capacity of the roller is a basis of belt conveyor. The calculation principle and method of material’s cross section area is deduced in the thesis, and mechanical analysis of the trough roller is carried out based on that, in results, the static load of it is calculated. The finite element model of the trough roller is set up by Simulation /Works software, and then the stress and deformation results of it is clear through finite element statics calculation and analysis. Based on this thesis, some valuable basis and reference are offered to trough roller’s strength and stiffness design.

Core Seismic Experiment and Analysis of Hexagonal Bundle Model for Fast Reactor

2017 ◽  
Author(s):  
Akihisa Iwasaki ◽  
Shinichiro Matsubara ◽  
Tomohiko Yamamoto ◽  
Seiji Kitamura ◽  
Shigeki Okamura
Keyword(s):  
Seismic Response ◽  
Fast Reactor ◽  
Impact Force ◽  
Seismic Analysis ◽  
Reactor Core ◽  
Three Dimensions ◽  
Analysis Method ◽  
Core Element ◽  
Core Elements ◽  
Advanced Analysis

To design fast reactor (FR) core components, seismic response must be evaluated in order to ensure structural integrity. Therefore, advanced analysis method must be developed to calculate seismic response of a fast reactor core. The fast reactor core is generally made of several hundred core elements which are hexagonal flexible beams embedded at the lower support plate in hexagonal arrangement. When a big earthquake occurs, large horizontal displacement, vertical displacement (rising) and impact force of each core element may cause a trouble for control rod insertability and core element intensity. Therefore, a seismic analysis method of a fast reactor core considering three-dimensional nonlinear behavior, such as impact, fluid-structure interaction, was developed. 1/1.5 scale 37 core element mock-ups hexagonal-matrix experiment was performed to validate the core elements vibration analysis code in three dimensions (REVIAN-3D). Vertical behavior (rising displacement) and horizontal behavior (impact force) were good agreement with experiments by the validation of REVIAN-3D.

Void Reactivity Effect Research on Liquid Metal Cooled Fast Reactor

2017 ◽  
Author(s):  
Yang Lyu ◽  
Xiao Liang
Keyword(s):  
Liquid Metal ◽  
Power Systems ◽  
Fast Reactor ◽  
Nuclear Power ◽  
Reactor Core ◽  
Nuclear Industry ◽  
Fourth Generation ◽  
Reactivity Effect ◽  
The Core ◽  
Reactivity Coefficient

In the fourth generation of advanced nuclear power systems, the liquid metal cooled fast reactor plays a more and more important role, such as SFR, LFR and ADS system with LBE coolant. Void reactivity effect means bubbles produced in the core area will induce the change of reactivity. And this reactivity will affect the safety of the reactor. Through investigation and comparison of several liquid metal cooled fast reactors in the nuclear industry, this paper studies bubbles in different positions and partial voiding of the active zone inside the core and fuel assemblies with Monte Carlo core physics calculation method and then concludes the main influencing factors of void reactivity coefficient. The results can provide reference for the follow-up research and development of new type liquid metal fast reactor core design.

A Structure Analysis Method for Machine Tools Based on Assembly Relationship

2010 ◽  
Vol 29-32 ◽  
pp. 2443-2448
Author(s):  
Dong Fang Hu ◽  
Yan Li ◽  
Jian Dong Shang
Keyword(s):  
Finite Element ◽  
Machine Tool ◽  
Machine Tools ◽  
Element Model ◽  
Joint Surface ◽  
Analysis Method ◽  
Element Analysis ◽  
Set Up ◽  
Relationship Of ◽  
Tool Assembly

Considering the nonlinear relationship of the joint surface between parts in machine tool assembly, a finite element analysis method based on assembly relationship is proposed. By this method, a finite element model is set up. Based on the analysis of experimental data, the result is close to the actual working conditions, which proves that this analysis method based on the machine tool assemble relationship is feasible and reliable

Structural Optimization of Packer’ Cone with Material Properties and Mechanics Parameters Based on ANSYS

2012 ◽  
Vol 252 ◽  
pp. 172-175
Author(s):  
Zhi Ping Guo ◽  
Wei Guo ◽  
Yan Fei Wang ◽  
Guan Fu Li ◽  
Yan Zheng Lu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Material Properties ◽  
Theoretical Basis ◽  
Cone Angle ◽  
Element Model ◽  
Mechanical Analysis ◽  
Calculation Results ◽  
Set Up ◽  
The Finite Element Model

Cone is one part of a packer. To understand the seal effectiveness of the packer, mechanical analysis must be made for it. The finite element model of packer is set up and packer minimum setting load changes are calculated under different climb angle of cone. Results show that reduce the cone angle of climb can make the packer sealing load significantly lower.The calculation results provide the theoretical basis for the real operation.

A Newly Solve Project on Rupture of Connected-Mold Bearing of Roller Foam Machine Based on Finite Element Theory

2010 ◽  
Vol 148-149 ◽  
pp. 586-589
Author(s):  
Ling Qin Meng ◽  
Zhi Wei Wang ◽  
Yan Qin Li ◽  
Guang Ming Lv ◽  
Fei Zuo ◽  
...  
Keyword(s):  
Finite Element ◽  
Maximum Load ◽  
Mechanical Analysis ◽  
The Self ◽  
Load Force ◽  
Domestic Company ◽  
Improved Design ◽  
Set Up ◽  
Element Theory ◽  
Abaqus Software

Since it is often appeared that connected-mold bearing FC208 rupture of roller foam machine in the production progress of a domestic company. A newly solve project on rupture of connected-mold bearing of roller foam machine based on finite element (FE) theory is put forward. All campaign process of this kind of machine is carried on mechanical analysis, and the maximum load force of bearing is calculated. FE models of FC208 and FC209 bearing are set up using ABAQUS software. The related simulation and analysis are conducted and force conditions of both components are compared with. The result of stress value is FC209 bearing is less than FC208 bearing. FC209 bearing is used in seven-positions rotating equipment made by ourselves in the company's No.40 # shop. The self-made equipment is running steady and reasonability of the improved design is proved.

Mechanical Analysis on Destruction of Coal Cutters Guide Shoes

2012 ◽  
Vol 226-228 ◽  
pp. 780-783
Author(s):  
Zhi Jun Yang ◽  
Wei Na Zhang
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Element Model ◽  
Mechanical Analysis ◽  
Analysis Method ◽  
Mechanics Analysis ◽  
Stress Diagram ◽  
Mining Coal ◽  
Coal Cutters ◽  
The Finite Element Model

Some key components’ failure often occurs in the process of the use of large-scale mining coal machine, and seriously affects the production of the enterprise. So it is necessary that analysis on the failure mechanical reason of guide shoes with the coal-winning machine by the modern mechanics analysis method. The stress diagram of guide shoes could be got by static analysis with MATLAB, and the dangerous parts of the finite element model with guide shoes appeared after loading. Finally, analysis on the fatigue strength and fatigue life of components under various complex condition, which provide some reference theory basis for the future related product designing, Manufacturing and maintenance.

The Design and Optimization of Boom of Tunnel Multi-Purpose Installing Truck

2014 ◽  
Vol 945-949 ◽  
pp. 290-293
Author(s):  
Yi Cheng ◽  
Yuan Qiang Tan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Analysis ◽  
Tunnel Construction ◽  
Analysis Method ◽  
Connecting Rod ◽  
Element Analysis ◽  
Design And Optimization ◽  
Finite Element Analysis Method ◽  
Working Space

This paper designed a boom of multi-purpose installing truck combined with the tunnel construction circumstances of China. The kinematics equations of the truck were obtained by establishing the working space and the connecting rod coordinate system of boom of multi-purpose installing truck. Finite element analysis method was used for the mechanical analysis of boom. The results indicate that in different conditions, the boom satisfied strength requirements and hinge pivots of boom at the top had a larger displacement which had little effect on the whole platform.

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