Study on the Containment Performance of MOX Fuel Processing Glovebox in Earthquake -Loading and Leakage Tests for Window Panels-

This paper shows the results of the leakage tests and the large deformation analysis of a full-scale glovebox window to establish the capacity of the containment of the MOX fuel manufacturing glovebox during an earthquake. In leakage tests, the stainless steel container installed on the reverse of the glovebox window was pressurized with a halogen-air mixture after deformation was applied to the upper part of window frame using 6 micro handy jacks, and to the four glove-ports using electrical actuators. A numerical model for the rubber seal was obtained with biaxial loading tests of chloroprene sheet specimens. Tensile loading tests of acrylic resin specimens were conducted to measure the material modulus. The FEM code ABAQUS was applied to the numerical simulation and the user-subroutine function for the hyperelastic model was used to predict the deformation of the rubber seal. These tests demonstrated that a glovebox window constructed with a rubber seal and a resin panel shows no leakage larger than 0.1 vol%/h with large static deformation. The results of the numerical simulation showed that the rubber seal resolved the effects of deformation of a window panel on the containment barrier, and that two lips of the rubber seal play a key role on the containment of the glovebox.

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Research on the Failure and Fracture Evolution of Mylonite with a Prefabricated Circular Opening by Discrete Element Method

Advances in Civil Engineering ◽

10.1155/2021/5510150 ◽

2021 ◽

Vol 2021 ◽

pp. 1-10

Author(s):

Kunmeng Li ◽

Yuanhui Li ◽

Shuai Xu ◽

Zhipeng Xiong ◽

Long An

Keyword(s):

Numerical Simulation ◽

Shear Failure ◽

Biaxial Loading ◽

Shear Fracture ◽

Side Wall ◽

Fracture Pattern ◽

Circular Opening ◽

Fracture Evolution ◽

Loading Tests ◽

Average Size

In this paper, the failure and fracture process of mylonite with a prefabricated circular opening under biaxial loading is studied by PFC2D code. Firstly, the hoop stress change law of opening wall in the process of loading is theoretically analyzed and three fracture patterns of rocks are proposed. Secondly, the biaxial loading tests of mylonite for numerical simulation are carried out, and the failure and fracture are analyzed from three aspects of space-time evolution of microcracks, energy conversion process, and final damage patterns. As the load progresses, the microcracks start to initiate at the side wall of the opening and the growth velocity of microcracks develops from the slow to fast and then slows down again. The final damage pattern of mylonite with a prefabricated circular opening belongs to shear fracture. The fracture zones start with the side wall spalling and then gradually extend to the border of the rock, which widen from the opening boundary to the border of the rock and slightly twist in the middle. The final fault zone width is about 6 times wider than the average size of simulation particles. Finally, based on the uniaxial compressive strength of mylonite in the laboratory, it is inferred that the fracture pattern of mylonite with a prefabricated circular opening by theoretical analysis is indeed shear failure, which is consistent with the result of numerical simulation.

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Deformation Analysis for Welding Assembly Processes of Automobile Panels

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.118-120.70 ◽

2010 ◽

Vol 118-120 ◽

pp. 70-74

Author(s):

Yu Liu ◽

Jian Xin Liu ◽

Shu Yi Yan ◽

Zhi Min Wang ◽

Bing Zhang

Keyword(s):

Numerical Simulation ◽

Welding Process ◽

Coupling Method ◽

Welding Distortion ◽

Deformation Analysis ◽

Assembly Quality ◽

Automobile Body ◽

Dimensional Deviation ◽

Assembly Deviation

Welding process of automobile panels is a key process in the manufacturing of automobile body and its quality directly impact on the appearance and quality of automobile. The causes of dimensional deviation of welded assembly could be workpieces variation, assembly tooling variation, and welding distortion. As a major source of assembly deviation, dimensional variations of workpieces have important effects on the assembly quality of automobile body. In this paper, pre-stressing was used to reflect the workpieces’ variation and the node coupling method was used in the numerical simulation to predict the deformation of assembly caused by the welding process of automobile panels. And further the computation results were listed and compared with the measured ones.

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Deformation analysis of shear band in granular materials via a robust plane shear test and numerical simulation

Powder Technology ◽

10.1016/j.powtec.2017.10.027 ◽

2018 ◽

Vol 323 ◽

pp. 385-392 ◽

Cited By ~ 7

Author(s):

Dong Lei ◽

Jinfeng Huang ◽

Wenxiang Xu ◽

Wenchao Wang ◽

Pei Zhang

Keyword(s):

Numerical Simulation ◽

Shear Band ◽

Granular Materials ◽

Shear Test ◽

Deformation Analysis ◽

Plane Shear

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Preparation and characterization of vitrified glass matrix for high level waste from MOX fuel processing

Journal of Non-Crystalline Solids ◽

10.1016/j.jnoncrysol.2007.07.013 ◽

2007 ◽

Vol 353 (52-54) ◽

pp. 4647-4653 ◽

Cited By ~ 9

Author(s):

V.S. Yalmali ◽

D.S. Deshingkar ◽

P.K. Wattal ◽

S.R. Bharadwaj

Keyword(s):

Glass Matrix ◽

High Level Waste ◽

Fuel Processing ◽

Mox Fuel ◽

High Level

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Deformation analysis of rubber seal assembly considering uncertainties in mechanical properties

Journal of Mechanical Science and Technology ◽

10.1007/s12206-019-0629-y ◽

2019 ◽

Vol 33 (7) ◽

pp. 3345-3353 ◽

Cited By ~ 2

Author(s):

Seung Pyo Lee ◽

Ki Weon Kang

Keyword(s):

Mechanical Properties ◽

Deformation Analysis ◽

Rubber Seal ◽

Seal Assembly

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Ratcheting Study of Pressurized Straight Z2CND18.12N Austenitic Stainless Steel Pipe under Reversed Bending

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.798-799.235 ◽

2013 ◽

Vol 798-799 ◽

pp. 235-238

Author(s):

Xiao Hui Chen ◽

Xu Chen

Keyword(s):

Numerical Simulation ◽

Reasonable Agreement ◽

Straight Pipe ◽

Finite Element Program ◽

User Subroutine ◽

Stainless Steel Pipe ◽

Element Program ◽

Simulation And Experiment ◽

Fortran Language ◽

Combined Hardening

The current paper reports the results of a numerical simulation and experiment of ratcheting behavior of pressurized straight pipe under reversed bending. A nonlinear isotropic/ kinematic (combined) hardening model is implemented into finite element program ANSYS by writing own user subroutine in FORTRAN language. The results of the numerical simulation is compared with experimental data. A reasonable agreement is noticed between the experimental and the numerical results for the ratcheting behavior of the pressurized straight pipe subjected to reversed bending.

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Numerical Simulation of Steam Reforming of Methanol in Micro-Channel Reactor

Heat Transfer, Part B ◽

10.1115/imece2005-82467 ◽

2005 ◽

Author(s):

Wenzhi Cui ◽

Longjian Li ◽

Tien-Chien Jen ◽

Qinghua Chen ◽

Quan Liao

Keyword(s):

Numerical Simulation ◽

Steam Reforming ◽

Hydrogen Generation ◽

Volume Ratio ◽

Micro Channel ◽

Microchannel Reactor ◽

Fuel Processing ◽

Reaction Heat ◽

Steam Reforming Of Methanol ◽

Hot Air

On-board hydrogen generation from hydrocarbon fuels, such as methanol, natural gas, gasoline and diesel, etc., will be technically feasible in the near future for fuel cell powered vehicles. Among all the fuel processing methods, steam reforming is considered as the most widely used method of hydrogen reforming for the lower reactive temperature, pressure and higher hydrogen ratio in reformate. A laminate micro-channel catalytic reactor was designed for the purpose of hydrogen generation from hydrocarbons. The depth of the reaction channel is 0.5 mm, and the length and width are 50 mm and 40 mm, respectively. The same geometry is designed for the heating channels. A metal sheet is placed between reacting and heating channels to separate them. Piling up alternately the two channels is to buildup the laminate microchannel reactor. Numerical simulation has been conducted in one reactive unit, i.e., one reacting channel and one heating channel. The reactant is the solution of methanol and water mixing with a certain ratio. And the reaction heat is provided by hot air flow with a temperature of 600K. A 2D steady model of the reforming reactive processes was developed and solved numerically. The ratio of water and methanol is set to be at 1.3. The conversion rate of methanol was nearly 100% at the outlet of reactor, while the volume ratio of hydrogen is 51.4% with the selectivity of CO2 reaches 49.2%. Detail results showed that the 50 mm long reacting channel could be divided into four different regimes along with the reacting course. In the first regime (0-5mm), methanol in the reactants is almost completely converted and CO is mainly generated in the third one (15-20mm), while reactions in the other two regimes are indiscoverable. The reasons leading to such phenomena are clarified in this paper.

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