Research on fast intelligence multi-objective optimization method of nuclear reactor radiation shielding

Song, Yimeng; Zhang, Zehuan; Mao, Jie; Lu, Chuan; Tang, Songqian; Feng, Xiao; Lyu, Huanwen

doi:10.1016/j.anucene.2020.107771

Cited by 27 publications

(5 citation statements)

References 7 publications

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“…ANSYS was used as the analysis system to conduct parametric modeling of the magnetic circuit structure, and the finite element simulation results were transferred to MATLAB to calculate the output damping force of the damper, and then the dynamic results were transferred to ISIGHT in real time to optimize the magnetic circuit structure. Non-dominated sorting genetic algorithm II (NSGA-II) with elite strategy and multifunctional optimization system tool (MOST) were adopted as the optimization algorithm (Song et al, 2020; Yang et al, 2015), and the optimization principle was shown in Figure 8.…”

Section: Structural Optimization Design Of Mr Dampermentioning

confidence: 99%

Multi-objective optimization design of magnetorheological damper and vehicle handling stability performance research

Wei,

Yan,

Liu

2023

Journal of Intelligent Material Systems and Structures

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Due to the characteristics of smart material magnetorheological (MR) fluid, such as short response time and large controllable range, semi-active suspension based on MR fluid has been widely used. In order to improve the steering stability of vehicles, a semi-active suspension with tapered flow mode MR was proposed. The magnetic circuit of the proposed structure was designed, its dynamic model was established, and the finite element simulation analysis was carried out. By establishing the optimization objectives and constraints, the MR damper was optimized by NSGA-II and MOST algorithms. The vehicle dynamics model with MR damper was established, and the vehicle dynamics simulation was carried out under the control system based on the vehicle dynamics simulation software CarSim-Simulink before and after optimization. The results show that the NSGA-II optimized MR damper can reduce vehicle roll and significantly improve vehicle handling stability. This paper provides a new idea for improving vehicle handling stability by optimizing the MR damper.

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Section: Structural Optimization Design Of Mr Dampermentioning

confidence: 99%

Multi-objective optimization design of magnetorheological damper and vehicle handling stability performance research

Wei,

Yan,

Liu

2023

Journal of Intelligent Material Systems and Structures

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“…And the vertical acceleration RMS a rms 3 and pitch angular acceleration RMS θ rms 3 before the integrated design in the emergency braking condition as constraints. 27 The solution process used non-dominated sorting genetic algorithm II (NSGA-II) as the optimization algorithm, 28 the population number and optimization algebra were 12 and 50, respectively. Classify the population based on non-dominance and assign a new set of design variables to generate the next generation.…”

Section: Integrated Designmentioning

confidence: 99%

Study on the integrated structure/control design method of magnetorheological damper for improving vehicle posture

Deng

Wei

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part K:

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In order to achieve a good match between magnetorheological (MR) damper and vehicle Noise Vibration and Harshness (NVH) quality and improve vehicle posture while driving, an integrated design method of MR damper structure/control for vehicle vibration suppression was proposed considering the coupling effect between MR damper structure parameters and controller parameters. A controller was designed to control the damping force generated by the tapered channel MR damper. Furthermore, the damping force expression of the tapered flow mode MR damper was derived, and the damping force was introduced into the vehicle dynamics model. In order to improve the vehicle posture, an integrated structure/control platform combining response surface model, current controller and vehicle dynamics model was established. Based on integrated platform, the vehicle dynamics model and Fourier transform were adopted to extract the time-frequency characteristics of the design objective under different working conditions. In the optimization process, the damper structure was optimized by taking the time domain values as the constraints and the frequency domain values as the optimization goals. The results show that the proposed integrated design method of MR damper can obtain its global optimal structural parameters under different driving conditions. The acceleration root mean square (RMS) values and frequency domain values of vehicle were both reduced to varying degrees, achieving the purpose of improving the vehicle posture.

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“…Song vd. [24], nükleer reaktörlerin radyasyona karşı zırhlaması için çok amaçlı optimizasyon yöntemi üzerine araştırma yapmışlardır. Abbasova ve arkadaşları [25] dental uygulamalarda kullanılan bazı materyallerin gama ışını zayıflama parametrelerini incelemiş, Agar vd.…”

Section: Giriş (Introduction)unclassified

Magnezyotermik indirgeme ile sentezlenen Lantanyum hekzaborür (LaB6) ve Seryum hekzaborür (CeB6) malzemelerinin gama zırhlama özelliklerinin Monte Carlo simülasyonu

Özcan

Türkan

Aksu

et al. 2022

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Radyasyon kullanımı tıp, sanayi, tarım ve nükleer santraller alanında günden güne artarak gelişmeye devam etmektedir. Bu alanlardaki iş kollarında çalışanların ve halkın radyasyonun zararlı etkilerinden korunması, nükleer teknolojilerin gelişiminin yanı sıra oldukça önemli başka bir konudur. Bu çalışmada, kimya laboratuvarımızda sentezlenen bazı hekzaborürler (LaB6 ve CeB6) X–ışını kırınımı (XRD) ile analiz edilmiş, Debye Scherrer eşitliği ile ortalama kristal boyutları hesap edilmiş, nano boyutta oldukları görülmüş ve bu numunelerin gama ışını zırhlama özellikleri incelenmiştir. Gama ışını koruma parametreleri olarak; kütle zayıflatma katsayıları, yarı değer katmanı, onda bir değer katmanı, ortalama serbest yol, etkin atom numarası, etkin elektron yoğunluğu, toplam atomik kesit ve toplam elektronik kesit değerleri, Monte Carlo yöntemi ile belirlendi. Bu yöntemde kullanılan foton enerji aralığı, 1.0 keV - 105 MeV olup, elde edilen veriler XCom programı tarafından hesaplanan sonuçlarla karşılaştırıldı. MC ve XCom arasında hesaplanan sonuçlar, radyasyon koruyucu malzemeler olarak kurşun, vermikülit, borosilikat, beton ve granit ile karşılaştırıldığında başarılı bir tutarlılık göstermiştir. Üretilen hekzaboridlerin, literatürde daha önce araştırılan malzemelere kıyasla daha umut verici gama koruma özelliklerine sahip olduğu sonucuna varılmıştır.

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Research on fast intelligence multi-objective optimization method of nuclear reactor radiation shielding

Cited by 27 publications

References 7 publications

Multi-objective optimization design of magnetorheological damper and vehicle handling stability performance research

Multi-objective optimization design of magnetorheological damper and vehicle handling stability performance research

Study on the integrated structure/control design method of magnetorheological damper for improving vehicle posture

Magnezyotermik indirgeme ile sentezlenen Lantanyum hekzaborür (LaB6) ve Seryum hekzaborür (CeB6) malzemelerinin gama zırhlama özelliklerinin Monte Carlo simülasyonu

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