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Sergey Smirnov, Grigory Dolgikh, Igor Yaroshchuk, Alexander Lazaryuk, Alexandra Kosheleva, Alex Shvyrev, Alexander Pivovarov and Aleksandr Samchenko
To study the features of resonant oscillations in the water column of the Peter the Great Gulf of the Sea of Japan, in situ measurements were carried out on its shelf, combined with numerical simulation of these processes. The observational data were obt...
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Alexey Abdrashitov, Alexander Gavrilov, Evgeny Marfin, Vladimir Panchenko, Andrey Kovalev, Vadim Bolshev and Julia Karaeva
One of the most well-known methods of intensifying the process of anaerobic digestion is the pretreatment of raw materials. For the first time, the use of a jet-driven Helmholtz oscillator for biomass pretreatment is proposed. The design of the device is...
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Yunbo Zhang, Kun Huang and Wei Xu
A common strategy for studying the nonlinear vibrations of beams is to discretize the nonlinear partial differential equation into a nonlinear ordinary differential equation or equations through the Galerkin method. Then, the oscillations of beams are ex...
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Victoria Semenova, Kirill Rozhdestvensky, Danil Albaev and Zin Min Htet
Hydrodynamical analysis of the conditions for the occurrence of chaotic ship roll, leading in some cases to the capsizing of the vessel, showed that such conditions are most likely to occur in the zone of the main parametric resonance of the roll when it...
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Vladimir Chupin, Grigory Dolgikh, Stanislav Dolgikh and Sergey Smirnov
To study the specific features of free surface oscillations in the northwestern part of Posyet Bay (the Sea of Japan), a series of experimental works using an installation with a laser meter for measuring hydrosphere pressure variations were carried out ...
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Lei Tan, Tomoki Ikoma, Yasuhiro Aida and Koichi Masuda
Barge-type platforms with moonpools are a promising type of foundation for floating offshore wind turbines due to their good seakeeping performance. In this paper, the mean wave drift force on a barge-type vertical-axis floating wind turbine with multipl...
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Jean-Louis Pinault and Ligia Pereira
Within the context of anthropogenic warming, rainfall oscillations may induce especially important societal impacts worldwide. In this article, we propose to study potential underlying mechanisms related to precipitation changes on a planetary scale by t...
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Volodymyr Yatsun
Pág. 32 - 40
A prototype of the universal resonance vibratory machine of wide use has been designed. The base of the vibratory machine is a vibratory table. Elastic supports make it possible for the platform of a vibratory machine, which has three degrees of freedom,...
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Volodymyr Yatsun,Gennadiy Filimonikhin,Vladimir Pirogov,Volodymyr Amosov,Petro Luzan
Pág. 89 - 97
A three-mass anti-resonance vibratory machine with a vibration exciter in the form of a passive auto-balancer has been analytically synthesized. In the vibratory machine, platforms 1 and 2 are visco-elastically attached to platform 3. Platform 3 is visco...
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Volodymyr Yatsun,Gennadiy Filimonikhin,Antonina Haleeva,Larisa Krivoblotsky,Yurii Machok,Mareks Mezitis,Nataliia Podoprygora,Mykola Sadovyi,Guntis Strautmanis
Pág. 103 - 111
The dynamics of a three-mass vibratory machine with the rectilinear translational motion of platforms and a vibration exciter in the form of a ball, roller, or pendulum auto-balancer have been analytically investigated.The existence of steady state motio...
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