Development and Validation of an LS-DYNA Model for Simulating Vertical Drop Test of a Nuclear Fuel Shipping Package

2010 ◽  
Author(s):  
W. Zhao ◽  
B. Hempy ◽  
J. Liu ◽  
W. Stilwell ◽  
R. Rochow
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Fuel Assembly ◽  
Nuclear Fuel ◽  
Element Model ◽  
Design Changes ◽  
Hypothetical Accident ◽  
Accident Conditions ◽  
Simplified Finite Element Model ◽  
Development And Validation

To meet shipping package safety requirements for transporting fresh nuclear fuel assemblies, structural performance of the shipping package under hypothetical accident conditions must be evaluated and demonstrated to have adequate protection to the fuel assembly it transports. To efficiently evaluate design changes in the shipping package, a simplified finite element model for the shipping package and fuel assembly has been developed using LS-DYNA. The paper describes the development and validation of the finite element model, along with a few design analysis examples to illustrate its usefulness.

Finite Element Model to Simulate the Spacer Grid Buckling Characteristics

2020 ◽  
Author(s):  
Youngik Yoo ◽  
Joongjin Kim ◽  
Kyongbo Eom ◽  
Hyeongkoo Kim
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Fuel Assembly ◽  
Nuclear Fuel ◽  
Grid Cell ◽  
Element Model ◽  
Spacer Grid ◽  
Static Compression ◽  
Fuel Rod ◽  
Nuclear Fuel Assembly

Abstract The purpose of this study is to develop a finite element model that accurately describes the buckling behavior of a spacer grid. The spacer grid is the most important component of a nuclear fuel assembly and supports the fuel rod with a structurally sufficient buckling strength. Therefore, the development of a reliable spacer grid model is essential to evaluate the mechanical integrity of a nuclear fuel assembly. To achieve this objective, a three-dimensional finite element model was proposed to simulate the buckling characteristics and mechanical behavior of a PWR spacer grid. To simulate the exact mechanical properties of the spacer grid cell, the parameter values required for the model were determined by conducting a fuel rod drag test and spacer grid spring/dimple stiffness test. Finally, a spacer grid static compression test and dynamic impact test were performed according to the gap size of the spacer grid cell, and the model was verified by comparing the test and analysis results. The results obtained using the developed spacer grid finite element model agreed well with the mechanical test results, and it was confirmed that both the buckling characteristics and mechanical behaviors of the model were accurately simulated by the proposed model.

scholarly journals DEVELOPMENT AND VALIDATION OF A FINITE ELEMENT MODEL TO PREDICT PATELLO-FEMORAL WEAR IN TKA

2012 ◽  
Vol 45 ◽  
pp. S357
Author(s):  
Silvia Pianigiani ◽  
Yan Chevalier ◽  
Luc Labey ◽  
Walter Pascale ◽  
Amir Kamali ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Development And Validation

Development and validation of a finite element model for water – CO2 coaxial gas-coolers

2012 ◽  
Vol 93 ◽  
pp. 637-647 ◽  
Author(s):  
D. Sánchez ◽  
R. Cabello ◽  
R. Llopis ◽  
E. Torrella
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Development And Validation
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