Influence of Different Sites on Impact Response of Steel-Plate Concrete Containment against a Large Commercial Aircraft

This paper aimed at evaluating the influence of different site conditions on the impact response of the structure of nuclear power plants (NPPs) against a large commercial aircraft. The lumped parameter site dynamic model recommended by the code of ASCE 4-98 was used to consider the different homogeneous sites. With respect to the excellent impact resistant performance of steel-plate concrete (SC) structure, the full SC containment is selected as the research object. The impact analysis of the full SC containment against a large commercial aircraft under different site conditions was carried out, based on the force time-history analysis method. The numerical results in terms of the displacement, plastic strain, local concrete damage, and different values of energy were evaluated. The results showed that: (1) For the relatively thin full SC containment, the impact response under the fixed boundary is the largest, while that calculated by other, different sites varies greatly, and there is no consistent rule, the boundary condition which is assumed to be fixed is relatively conservative. (2) For the thicker full SC containment, the displacement response decreased with the increasing of the site shear wave velocity, which is the smallest when the fixed boundary is considered. When the shear wave velocity of the site is large enough, its boundary condition which is assumed to be the fixed constraint is reasonable. (3) For the relatively thin full SC containment, the site damping effect has a significant effect on the structural impact response. Nevertheless, the impact response of the thicker containment is slightly influenced by the site damping effect. (4) For the impact analysis of the structures of NPPs against a large commercial aircraft, it is suggested that both the specific site condition and fixed boundary should be considered.

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Fire and Explosion Analysis of Steel-Plate Composite Concrete Shield Building Under Large Commercial Aircraft Impact

Volume 2: Plant Systems, Structures, Components and Materials ◽

10.1115/icone25-67091 ◽

2017 ◽

Author(s):

Shuaixi Li ◽

Shujian Cheng ◽

Honghui Ge ◽

Fang Yuan ◽

Xiaolin Huang ◽

...

Keyword(s):

Pressure Distribution ◽

Steel Plate ◽

Pool Fire ◽

Building Structure ◽

Commercial Aircraft ◽

Fea Model ◽

Fire And Explosion ◽

Temperature And Pressure ◽

The Impact

The fire and explosion assessment is necessary for NPP to evaluate the effect caused by malicious large commercial aircraft impact. This report focuses on the fire and explosion effect on shield building structure of nuclear island according to the impact screening. With the investigation and analysis for the fire and explosion of aircraft impact, a simple and effective method was established. With this method the pool fire and fire explosion are analyzed and their effects on shield building structure are assessed based on the temperature and pressure distribution obtained from the FEA model.

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Use of Statical Indentation Laws in the Impact Analysis of Laminated Composite Plates

Journal of Applied Mechanics ◽

10.1115/1.3169029 ◽

1985 ◽

Vol 52 (1) ◽

pp. 6-12 ◽

Cited By ~ 229

Author(s):

T. M. Tan ◽

C. T. Sun

Keyword(s):

Impact Analysis ◽

Laminated Composite ◽

Composite Plates ◽

Impact Response ◽

Low Velocity Impact ◽

Low Velocity ◽

The Impact ◽

Theoretical Results ◽

Theoretical Procedure ◽

Good Agreement

The low-velocity impact response of graphite/epoxy laminates was investigated theoretically and experimentally. A nine-node isoparametric plate finite element in conjunction with an empirical contact law was used for the theoretical investigation. Theoretical results are in good agreement with strain-gage experimental data. The results of the investigation indicate that the present theoretical procedure describes the impact response of laminate for low-impact velocities.

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FEM Analysis of Impact Tests for Steel Plate Concrete Panels against Scaled-Aircraft Impact

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.477-478.777 ◽

2013 ◽

Vol 477-478 ◽

pp. 777-783

Author(s):

Xiu Yun Zhu ◽

Rong Pan ◽

Feng Sun

Keyword(s):

Nuclear Power ◽

Power Plants ◽

Steel Plate ◽

Experimental Result ◽

Commercial Aircraft ◽

Concrete Wall ◽

Concrete Panels ◽

Aircraft Model ◽

The Impact ◽

Aircraft Crash

Due to the rear-face steel plate of the steel plate concrete wall (SC) is very effective in preventing the perforation and scabbing of concrete, in order to resist the impact of commercial aircraft crash, steel plate concrete structures are usually used in the design of external walls of nuclear power plants. In this paper, the simulation analysis of the impact test of 1/7.5 scaled aircraft model impacting the steel plated concrete panels is carried out by using finite element code ANSYS/LS-DYNA. The Winfrith material model (*MAT_84) in ANSYS/LS-DYNA is used to simulate the concrete. The damage profile of panels and residual velocity of aircraft engine comparisons between the simulations and tests are presented in this paper. The results indicate that the damage modes from the impact simulations are very good agreement with the experimental result. It is verified that not only the selection of the material parameters needed for the steel plated concrete wall and aircraft model but also the entire analysis method was appropriate and effective. This paper provided the effective methodology for simulation of the response of the steel plated concrete structure of nuclear power plant due to commercial aircraft crash impact.

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Sensitivity Analysis of Steel-Plate Concrete Containment against a Large Commercial Aircraft

Energies ◽

10.3390/en14102829 ◽

2021 ◽

Vol 14 (10) ◽

pp. 2829

Author(s):

Xiuyun Zhu ◽

Jianbo Li ◽

Gao Lin ◽

Rong Pan ◽

Liang Li

Keyword(s):

Sensitivity Analysis ◽

Plastic Strain ◽

Steel Plate ◽

Concrete Strength ◽

Plate Thickness ◽

Time History ◽

Commercial Aircraft ◽

Strength Grade ◽

Displacement Response ◽

The Impact

Due to the excellent impact resistant performance of steel-plate concrete (SC) structure compared with the conventional reinforced concrete (RC) structure, SC structure is preferred to be used in the design of external walls of nuclear island buildings for new nuclear power plants (NPPs). This study aims at evaluating the effect of material and geometric parameters of SC containment on its impact resistant performance, thus the numerical simulation and sensitivity analysis of SC containment subjected to malicious large commercial aircraft attack are conducted based on the force time-history analysis method. The results show that: (1) the impact resistant performance of full SC containment is better than that of half SC containment; (2) for relatively thin full SC containment, the impact response and concrete damage can be significantly reduced by the enhancing of concrete strength grade or the increasing of steel plate thickness; (3) for the thicker full SC containment, concrete strength grade has only a slight influence on the impact displacement response, and the increasing of steel plate thickness has no significant effect on mitigating the impact displacement response. However, the increasing of steel plate thickness can effectively reduce its plastic strain, and the decreasing of strength grade of steel plate may obviously increase its plastic strain; and (4) concrete thickness plays a decisive role on the improvement of impact resistance, which is more effective than the enhancing of concrete strength grade. Resultantly, this paper provides a reference and guidance for the design of SC structure external walls of nuclear island buildings against a large commercial aircraft.

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The Study on Impact Resistance of Metal Rubber for a Product

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.821.125 ◽

2019 ◽

Vol 821 ◽

pp. 125-130 ◽

Cited By ~ 1

Author(s):

Fu Wei Duan ◽

Yuan Tao ◽

Cheng Bin Ding

Keyword(s):

Impact Resistance ◽

Great Influence ◽

Impact Response ◽

Test Results ◽

Damping Effect ◽

Cylindrical Metal ◽

Metal Rubber ◽

The Impact ◽

Rubber Damper ◽

Better Than

A metal rubber damper was designed for the too large impact response of a product. The impact response of products which bears big shocks with and without metal rubber damper were studied and compared. The damping performance of the metal rubber damper with different pre-compression was tested and studied. The test results show that the metal rubber damper can effectively reduce the impact response of the product in three directions; The damping effect of cylindrical metal rubber damper in the direction of cylinder axis is better than that in the other two axial directions; different pre-compression amounts have great influence on the impact response, so the optimum damping effect is obtained by adjusting the pre-compression amount of the metal rubber damper.

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The Impact of a Potential Public/Private Initiative on a Defined Region of the South Suburban Chicago Metropolitan Area

International Journal of Business and Applied Social Science ◽

10.33642/ijbass.v5n2p2 ◽

2019 ◽

pp. 14-32

Keyword(s):

Supply Chain ◽

Economic Impact ◽

Impact Analysis ◽

Census Data ◽

Economic Benefits ◽

Local Economy ◽

Market Area ◽

State And Local ◽

The University ◽

The Impact

The university is considered one of the engines of growth in a local economy or its market area, since its direct contributions consist of 1) employment of faculty and staff, 2) services to students, and supply chain links vendors, all of which define the University’s Market area. Indirect contributions consist of those agents associated with the university in terms of community and civic events. Each of these activities represent economic benefits to their host communities and can be classified as the economic impact a university has on its local economy and whose spatial market area includes each of the above agents. In addition are the critical links to the University, which can be considered part of its Demand and Supply chain. This paper contributes to the field of Public/Private Impact Analysis, which is used to substantiate the social and economic benefits of cooperating for economic resources. We use Census data on Output of Goods and Services, Labor Income on Salaries, Wages and Benefits, Indirect State and Local Taxes, Property Tax Revenue, Population, and Inter-Industry to measure economic impact (Implan, 2016).

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Comparing the Impact Response of 3D Fiber Reinforced Foam Core with Monolithic Foam Core in Composite Sandwich Structures

AIAA Scitech 2021 Forum ◽

10.2514/6.2021-1512 ◽

2021 ◽

Author(s):

Michael J. Wu ◽

Steffen Tai ◽

Jacob Rome ◽

Vinay K. Goyal ◽

Zachary T. Kier ◽

...

Keyword(s):

Sandwich Structures ◽

Impact Response ◽

Foam Core ◽

Fiber Reinforced ◽

Composite Sandwich ◽

Composite Sandwich Structures ◽

The Impact

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Influence of Ply Stacking Sequences on the Impact Response of Carbon Fibre Reinforced Polymer Composite Laminates

SSRN Electronic Journal ◽

10.2139/ssrn.3688989 ◽

2019 ◽

Author(s):

Kristian Gjerrestad Andersen ◽

Gbanaibolou Jombo ◽

Sikiru Oluwarotimi Ismail ◽

Segun Adeyemi ◽

Rajini N ◽

...

Keyword(s):

Carbon Fibre ◽

Polymer Composite ◽

Composite Laminates ◽

Impact Response ◽

Reinforced Polymer ◽

Carbon Fibre Reinforced Polymer ◽

Fibre Reinforced Polymer ◽

The Impact

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Impact Analysis of the Mechanization Program for Tribal Paddy Farmers of Goa

Journal of AgriSearch ◽

10.21921/jas.v6i1.14922 ◽

2019 ◽

Vol 6 (1) ◽

Author(s):

MATHALA JULIET GUPTA ◽

ASHISH M. PITRE ◽

SUMATI CHAVAN PANDURNAG ◽

SALONI SALIL VANJARI

Keyword(s):

Impact Analysis ◽

Field Capacity ◽

Significant Saving ◽

Manual Methods ◽

Paddy Farmers ◽

The Impact ◽

And Training

This paper assessed the impact of the mechanization of the 8 tribal paddy farmers’ groups of Goa benefited in the year 2011 through the Tribal sub-plan program of ICAR-CCARI through results of surveys conducted in 2012 and 2015. Shift to mechanization among beneficiaries was significant in power tillers (64-100%) but less in power reapers(0-91%). Also significant saving in manpower (Power tillers:33.3% to 60%, power reapers: 33.3% to 83.3%), , time (field capacity increased (power tillers : 41.7% to141%, power reapers :58.1% to 912.8%) and cost(power tillers :44.7% to 59.1%, power reapers : 57.8% to 82.9%) was reportedthrough the use of equipment as compared to desi plough or manual methods of harvesting. Some constraints like lack of access roads and training in use and maintenance of the equipment were reported by the beneficiary farmers.

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