Frequency analysis and control of sloshing coupled by elastic walls and foundation with smoothed particle hydrodynamics method

Jamalabadi, Mohammad Yaghoub Abdollahzadeh

doi:10.1016/j.jsv.2020.115310

Cited by 20 publications

(9 citation statements)

References 52 publications

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“…The static in-plane prestress within the flexible circular plate is not taken into account in this case. The harmonic solution is obtained via the SPH method (Abdollahzadeh Jamalabadi, 2020b). The governing equation for the lateral vibration of a thin-walled structure in vacuo which contains the fourth derivate of the differential operator can be estimated by SPH functions.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, the problem of fluid-structure in sloshing is studied in many types of research by port-Hamiltonian approach (Abdollahzadeh Jamalabadi, 2018), analytical method (Abdollahzadeh Jamalabadi, 2019), entropy generation minimization method (Jamalabadi, 2019), passive control with baffles (Jamalabadi et al, 2018), vibration suppression method (Jamalabadi, 2020), smoothed particle hydrodynamics method (Abdollahzadeh Jamalabadi, 2020b), active control by piezoelectric sheets (Abdollahzadeh Jamalabadi, 2020a), and experimental methods (Gorman et al, 2001). The case simply is similar to an Indian musical drum with respect to the case of vibroacoustic effects involving a circular plate; however, the fluid in the container is assumed here to be incompressible and inviscid.…”

Section: Introductionmentioning

confidence: 99%

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Active sloshing control of a circular cylindrical container with FG GPL-RC

Jamalabadi

2022

Journal of Vibration and Control

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The main purpose of the current study is to design a control system for a sloshing system to suppress the vibration of functionally graded graphene platelet-reinforced composite (FG GPL-RC) on the top surface. A set of piezoelectric sensors and actuators are used for active control of fluid-structure coupling in transient seismic analysis of an inviscid liquid sloshing in a cylindrical tank. First, the top surface FG GPL-RC is optimized to satisfy maximum deformation, face failure, mid shear, and face wrinkling by changing the geometrical parameters and weight fraction distribution through the thickness. The nonlinear governing equations of nanocomposite panels with mechanical properties derived from the Halpin–Tsai model are solved by smoothed particle hydrodynamics (SPH) method. A parameter study counting the boundary condition effects, thickness-to-radius ratio, material distribution of the laminates, and dimensions of the sloshing tank on the FG GPL-RC natural frequencies are surveyed and explained in detail. Then, the frequency analysis of the plate with and without sloshing is performed while the inviscid fluid motion is modeled by SPH. The proposed method is validated with available data in the literature. Finally, the active control of the coupled system in response to the external disturbances is completed by a tuned proportional–integral–derivative (PID) controller which used the piezoelectric sheets on the top surface plate. The performance of the proposed control system is illustrated by a comparison of the controlled and uncontrolled transient responses of the coupled hydro-elastic system to the El-Centro seismic load.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active sloshing control of a circular cylindrical container with FG GPL-RC

Jamalabadi

2022

Journal of Vibration and Control

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“…The SPH method was proposed in 1997 for astrophysical applications (Gingold and Monaghan, 1977). Recently, this method has been widely applied to a large variety of engineering fields (Dai et al, 2017;Jamalabadi, 2020;Price and Laibe, 2020;Zhu and Zou, 2020). Compared to the mesh-based method, the major advantage of the SPH method is to bypass the need for numerical meshes and avoid the mesh distortion issue and a great deal of computational work to renew the mesh (Ma et al, 2020).…”

Section: Sph Algorithmmentioning

confidence: 99%

Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China

Dai

Wang

Yang

et al. 2020

Preprint

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Abstract. To analyse the kinetic characteristics of a rapid landslide that occurred on 9 April 2000 in Tibet, China, a meshfree numerical method named Smoothed Particle Hydrodynamics (SPH) is introduced, and two-dimensional and three-dimensional models are established in this work. Based on the numerical simulation, the landslide motion process is reproduced and the kinetic characteristics are analysed combined with the field investigation data. In the kinetic analysis, the landslide velocity, run-out distance, landslide accumulation, and energy features are discussed. Simulation results show that the landslide mass undergoes an acceleration stage after failure, then the kinetic energy dissipates gradually due to the friction and collision during the landslide propagation. Finally, the landslide mass blocks the Yigong river and forms a huge landslide dam and an extensive barrier lake. The peak velocity is calculated to be about 100 m/s, and the run-out distance is approximately 8,500 m. The simulation results basically match the data measured in field, thus verifying the good performance of the presented SPH model. This approach can provide a new way to predict hazardous areas and estimate the hazard intensity of rapid landslides.

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“…Ayarlı sıvı sönümleyici cihazların ilk uygulaması, gemilerdeki titreşimin kontrolü için tasarlanmıştır (Hüsem, M. ve Yozgat, E., 2005). Gemi makinelerindeki titreşimi önlemedeki performansıyla, uydu kontrolünde de kullanılmış, titreşim kontrolündeki etkileri düşünülerek, Bauer'in çalışmalarıyla yapı hareketinin kontrolünde nasıl etki edebileceği üzerine araştırmalar yapılmıştır (Moiseyev, 1952;Jamalabadi, 2020;Abramson, 1963;Bauer, 1984). 1987'de Modi ve Welt iki ve üç boyutlu yapısal modellerde sıvı bulunduran sönümleyicilerin düşük frekanslı titreşimlerin kontrolü üzerine araştırma yapmasıyla, titreşimlerin kontrolünde etkili olduğunu anlaşılmıştır (Modi ve Welt, 1987) Bu işlemler iterasyon sayısı kadar tekrarlanır.…”

Section: Introductionunclassified

Ayarlı Kütle Sönümleyicilerinin Optimum Ayarlanması

Ocak,

Kayabekir,

Berat Bilgin

et al. 2024

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Ayarlı kütle sönümleyicileri her türlü mekanik sistemde kullanılan ve sistemde rahatsız edici olarak meydana gelen titreşimlerin sönümlenmesinde fayda sağlayan bir sistemdir. Rüzgar ve deprem etkileri altında özellikle titreşime hassas olan kule, köprü ve yüksek yapılar için uygulanabilir bir sistemdir. Bu sistemlerin etkinliği ancak yapının özelliklerine göre düzgün bir şekilde ayarlandığında sağlanmaktadır. Bu durum ise sistemin optimum tasarımını önemli hale getirmektedir. Yeni türde kütle sönümleyici sistemlerinin geliştirilmesi ve tasarlanması da bu sistemleri günümüzde depreme karşı dayanıklı yapılar oluşturmak amacında önemli kılmaktadır. Editörü olduğumuz bu kitabın içeriğinde pasif ve aktif yapısal kontrol sistemlerini tanıtıldıktan sonra problemin en genel halini temsil eden hareket denklemleri sunulmuştur. Sonrasında ayarlı kütle sönümleyicilerinin klasik, metasezgisel ve yapay sinir ağları tabanlı optimizasyonu sunulmuştur. Ayarlı sıvı sönümleyicilerin ve aktif ayarlı kütle sönümleyicilerinin optimum tasarımları son olarak verilmiştir. Kitabın editörleri olarak bu kitapta yazar olarak katkı sağlayan herkese teşekkürlerimizi sunarız. Millî mücadele ve egemenlik sonucunda Mustafa Kemal Atatürk’ün kurduğu Cumhuriyetimizin kuruluşunun 100. Yılını taçlandırması amacıyla İstanbul Üniversitesi – Cerrahpaşa’da oluşturulan ‘Cumhuriyetin 100. Yılına 100 Kitap’ projesinde yer almaktan gurur duyar, bu projeye destek sağlayan ve gerçekleşmesine için çabalarını eksik etmeyen herkese teşekkürlerimizi sunarız. Büyük Önderimiz Gazi Mustafa Kemal Atatürk’ü, aziz şehitlerimizi ve gazilerimizi saygı ve rahmetle anıyoruz.

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Frequency analysis and control of sloshing coupled by elastic walls and foundation with smoothed particle hydrodynamics method

Cited by 20 publications

References 52 publications

Active sloshing control of a circular cylindrical container with FG GPL-RC

Active sloshing control of a circular cylindrical container with FG GPL-RC

Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China

Ayarlı Kütle Sönümleyicilerinin Optimum Ayarlanması

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