A Combined Cross-Section Adjustment and Bias Factor Method for Accurate Prediction of Fast Breeder Reactor Core Performance Parameters

Takeda, Toshikazu; Matsumoto, Kazuhisa

doi:10.13182/nse93-a24015

Cited by 11 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If the area of the density function is large in the negative domain of the limit state equation, it is very important to calibrate the model correctly to obtain good reliability. The inverse of the ω ratio can be used to evaluate the variability of the predicted equations (Bernaards and Sijtsma, 2005; Endo et al, 2016; Takeda and Matsumoto, 1993).…”

Section: Methodsmentioning

confidence: 99%

Reliability and uncertainty quantification of the net section tension capacity of cold-formed steel angles with bolted connections considering shear lag

Borges

Paula

Evangelista

et al. 2020

Advances in Structural Engineering

View full text Add to dashboard Cite

In cold-formed steel members under tension and connected with bolts, the resistance capacity of the net section should be calculated, taking into account the shear lag phenomenon. This is done through the net section reduction coefficient, Ct. Different Standards show different equations for Ct. In this work, experimental laboratory data of cold-formed steel angles from the authors are used for the evaluation of the accuracy of the predictions of the net section capacity of members under tension. Such predictions are given by the equations of AISI, Eurocode-3, Brazilian standard NBR 14762, and also by a predictive equation previously proposed by the authors. The paper shows how each equation predicts the tension member resistance capacity in front of the experimental data. Most of the equations in the design standards have good predictions when more sections of the steel angles are connected. The results show that the AISI standard presented the best resistance capacity prediction and lower standard deviations of the output response upon uncertainty.

show abstract

Section: Methodsmentioning

confidence: 99%

Reliability and uncertainty quantification of the net section tension capacity of cold-formed steel angles with bolted connections considering shear lag

Borges

Paula

Evangelista

et al. 2020

Advances in Structural Engineering

View full text Add to dashboard Cite

show abstract

“…4) In the bias factor method, the bias factor, which is defined as the ratio of measured data to the calculated data, is obtained using the data from a critical experiment. This factor is a multiplier that is applied to the calculated neutronics characteristics of a target system to improve the accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…One of the authors derived the combined method 4) that is a combination of the cross section adjustment method and the bias factor. For this method, the bias factor of the neutronics characteristics of a mock-up core is calculated with the adjusted cross sections.…”

Section: Introductionmentioning

confidence: 99%

A New Uncertainty Reduction Method for Fuel Fabrication Process with Erbia-Bearing Fuel

Sano

Takeda

Yamasaki³

2009

Journal of Nuclear Science and Technology

Self Cite

View full text Add to dashboard Cite

A new uncertainty reduction method is proposed to evaluate the prediction accuracy of neutronics characteristics by combining the generalized bias factor method and the cross section adjustment method. The present method is applied to a fuel fabrication process with erbia-bearing fuel. The cross section uncertainty of erbium is improved by means of cross section adjustment using experimental data of the erbia worths. For a blending machine (H=U ¼ 0) used in the fuel fabrication process, the uncertainty reduction, which shows the rate of reduction of uncertainty, of the k eff is 0.604 for the present method and 0.555 for the conventional bias factor method. Thus, the prediction uncertainties are reduced by the present method compared with by the bias factor method.

show abstract

The role of experiments and of sensitivity analysis in simulation validation strategies with emphasis on reactor physics

Palmiotti

Salvatores

2013

Annals of Nuclear Energy

View full text Add to dashboard Cite

A Combined Cross-Section Adjustment and Bias Factor Method for Accurate Prediction of Fast Breeder Reactor Core Performance Parameters

Cited by 11 publications

References 8 publications

Reliability and uncertainty quantification of the net section tension capacity of cold-formed steel angles with bolted connections considering shear lag

Reliability and uncertainty quantification of the net section tension capacity of cold-formed steel angles with bolted connections considering shear lag

A New Uncertainty Reduction Method for Fuel Fabrication Process with Erbia-Bearing Fuel

The role of experiments and of sensitivity analysis in simulation validation strategies with emphasis on reactor physics

Contact Info

Product

Resources

About