Zobrazeno 1 - 10
of 364
pro vyhledávání: '"Huajiang Ouyang"'
Publikováno v:
Journal of Low Frequency Noise, Vibration and Active Control, Vol 42 (2023)
By modifying the mass and stiffness parameters of a structure, a subset of its natural frequencies can be assigned. However, such an assignment is usually accompanied with changes of the remaining frequencies, known as ‘spillover’. Eigenvalue or
Externí odkaz:
https://doaj.org/article/5a3eadf7f1aa4ae5a6ca3b1aabea9d21
Publikováno v:
Friction, Vol 6, Iss 1, Pp 32-46 (2017)
Abstract This paper investigates the self-loosening of threaded fasteners subjected to dynamic shear load. Three kinds of typical coatings, PTFE, MoS2, and TiN applied to bolts and nuts, are tested in this investigation. The study experimentally exam
Externí odkaz:
https://doaj.org/article/923baec90bd5405b8184ef09064fbb43
Publikováno v:
Journal of Low Frequency Noise, Vibration and Active Control, Vol 37 (2018)
The partial eigenvalue (or natural frequency) assignment or placement, only by the stiffness matrix perturbation, of an undamped vibrating system is addressed in this paper. A novel and explicit formula of determining the perturbating stiffness matri
Externí odkaz:
https://doaj.org/article/549f7b39239149d39c32c57beb2cd125
Autor:
Congmin Niu, Huajiang Ouyang
Publikováno v:
Applied Sciences, Vol 10, Iss 23, p 8334 (2020)
Mechanical brakes are essential for electric cranes when emergency braking occurs. This paper presents, for the first-time, a dynamic response analysis of emergency braking events of electrical cranes that has modelled crane components as flexible an
Externí odkaz:
https://doaj.org/article/81d4653729614d8d829a8be1a81589eb
Publikováno v:
Applied Sciences, Vol 10, Iss 19, p 6894 (2020)
This paper investigates a type of linear vibration isolator which incorporates two passive devices, negative stiffness elements and an inerter, into the conventional isolator (massstiffnessdamper). Two configurations of the passive devices are consid
Externí odkaz:
https://doaj.org/article/170ac04c18604bdfbf53f64ad2a3c701
Publikováno v:
Sensors, Vol 20, Iss 20, p 5964 (2020)
Mode shape-based structural damage identification methods have been widely investigated due to their good performances in damage localization. Nevertheless, the evaluation of mode shapes is severely affected by the measurement noise. Moreover, the co
Externí odkaz:
https://doaj.org/article/4f1f724401b34b8da9b121a11467a4e1
Publikováno v:
Applied Sciences, Vol 10, Iss 1, p 147 (2019)
With the large-scale and complexity of ship propulsion shafting, it is more difficult to analyze and control the torsional vibration of shafting. Therefore, an effective control method for the torsional vibration of shafting is of great significance
Externí odkaz:
https://doaj.org/article/df77a2e7b2584450a96e6ad6541833ef
Publikováno v:
Advances in Mechanical Engineering, Vol 9 (2017)
This article studies energy dissipation of a friction damper (due to stick–slip vibration) in the context of harmonic excitation. There are numerous applications of such friction dampers in engineering. One particular example is a new kind of under
Externí odkaz:
https://doaj.org/article/9d6cfb4208f44a4fa7e865cb0c52e574
Publikováno v:
Shock and Vibration, Vol 2017 (2017)
As is well known, the external disturbance (especially the stochastic wind load) has nonnegligible effect on the operation of pantograph-catenary system, which may cause the strong fluctuation in contact force as well as the increased occurrence of c
Externí odkaz:
https://doaj.org/article/7430af2eff514ddba175ea8ec61b997b
Publikováno v:
Applied Sciences, Vol 9, Iss 17, p 3567 (2019)
For a class of single-degree-of-freedom non-linear passive vibration isolators with unknown excitation and unmodelled dynamics, two sliding mode control methods—a conventional one and the other using a super-twisting algorithm—were proposed to co
Externí odkaz:
https://doaj.org/article/d6d3839e75724427a33e1945a08a8a31