Deterministic and probabilistic analysis of damping device resistance under impact loads from nuclear fuel container drop

Králik, Juraj

doi:10.2478/v10189-010-0004-6

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…The cylinder container has a diameter of 2 285 mm, a height of 4 367 mm and a weight of 89.5 t. In the case of an accident the container can fall to the containment plate. The accident scenario was defined by a technological engineer in the works [9,10]. Two possible tracks were defined (Fig.…”

Section: Free Fall Loading Of Tk-c30 Containermentioning

confidence: 99%

“…The simulation of a reinforced concrete structure's behavior during an impact load is considered in [1, 9 -11, 14]. The interaction between a structure and the soil and the interaction between the structure and fluid in a deactivated basin were investigated in [2,7,8,10,[11][12][13][14]. The uncertainties of the model and structure resistance can be considered using the probabilistic assessment [5, 6 and 10].…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design of NPP Containment Protection Against Fuel Container Drop

Králik

2013

AMR

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This paper presents a optimal design of a damping devices for the protection of the reinforced concrete structure of a nuclear power plant (NPP) against the impact loads from a container of nuclear fuel of the type TK C30 drop. The finite element idealization of the building structure is used in space. The interaction of the soil-structure, as well as the fluid-structure of the deactivated basin is considered in space. A steel pipe damper system is proposed for the dissipation of the kinetic energy of the container is free fall. The Newmark’s integration method is used for the solution of the dynamic equations.

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Section: Free Fall Loading Of Tk-c30 Containermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal Design of NPP Containment Protection Against Fuel Container Drop

Králik

2013

AMR

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“…Although the inherent phenomena are inevitable, the impacts of earthquakes, and the cost of such disasters can be reduced if seismic control approaches are implemented within structures. In this way, analyzing soil and investigating total displacement formulations in the frequency domain has been suggested for structures with an embedded elastic foundation [1]. Another approach used semi-active base isolation control systems [2,3].…”

Section: Introductionmentioning

confidence: 99%

A Simplified Matrix Analysis Approach to Multi-story Buildings Involving a Friction Damper

Gharra

Khanlari

Marnani

2021

Period. Polytech. Civil Eng.

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Damping through friction tends to be one of the most efficient methods to suppress damage to structures from earthquakes. Realizing robust structures is therefore highly dependent on designing for the dynamic forces of friction-damped structures and exploring their reliability against natural disasters. This paper presents a simplified matrix analysis algorithm for multi-story friction- damped buildings. The behavior of friction-damped systems has analyzed more accurately by modeling the master-slave degree of freedom of the joints. First, the formulation of the problem is discussed, and a condensed general equation is derived. Then, an end-to-end solution is proposed to find the responses of structures. The displacement response of each story has been carried out in both condensed and non-condensed general equations, and the results clearly show the accuracy of the proposed method. The numerical analysis and the results of the simulation of various friction-damped structures depicts the proposed approach consists with the commercial finite element method and is applicable for the analysis various types of structures. It is noted that the acceleration and displacement responses of the structures investigated under the proposed method and the traditional finite element method are so consistent that only a 1.5% difference is observed. Moreover, as a result of the proper allocation of degrees of freedom during the analysis, this method yields a reduction in computational costs especially in large buildings.

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“…This type of damping devices was used in Germany [9]. We propose the kinetic energy of the container fall under the bottom of the basin in the form…”

Section: Design Of Damping Devicesmentioning

confidence: 99%

Optimal Protection of Reactor Hall Under Nuclear Fuel Container Drop Using Simulation Methods

Králik¹

2014

Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series.

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This paper presents of the optimal design of the damping devices cover of reactor hall under impact of nuclear fuel container drop of type TK C30. The finite element idealization of nuclear power plant structure is used in software ANSYS. The steel pipe damper system is proposed for dissipation of the kinetic energy of the container free fall in comparison with the experimental results. The probabilistic and sensitivity analysis of the damping devices was considered on the base of the simulation methods in program AntHill using the Monte Carlo method.

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Deterministic and probabilistic analysis of damping device resistance under impact loads from nuclear fuel container drop

Abstract: This paper presents a deterministic and probabilistic solution of damping devices for the protection of the reinforced concrete structure of a nuclear power plant (NPP)

Cited by 6 publications

References 3 publications

Optimal Design of NPP Containment Protection Against Fuel Container Drop

Optimal Design of NPP Containment Protection Against Fuel Container Drop

A Simplified Matrix Analysis Approach to Multi-story Buildings Involving a Friction Damper

Optimal Protection of Reactor Hall Under Nuclear Fuel Container Drop Using Simulation Methods

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