Inerter-based damping isolation system for vibration control …
Inerter-based damping isolation system (IDIS) is proposed for offshore platforms. •. Performance-oriented multiple-objective optimization is formulated for …
crusher damping platform
Hybrid damping systems in offshore jacket platforms with float …
In the current study, two realistic float-over-deck offshore jacket platforms shown in Fig. 1 are examined; "North Rankin B" (NRB) is a platform installed on Western Australia offshore oil fields with a height of 125 m and "Foroozan" (FRZ) is a six leg platform located in waters of the Persian Gulf with a height of 95 m. As their topsides …
2002 Heave and Pitch Motion of A Spar Platform …
2002 Heave and Pitch Motion of a Spar Platform With Damping Plate - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Heave and Pitch Motion of a Spar Platform With Damping Plate
Optimization of an inerter-based vibration isolation system …
This paper presents an analytical analysis and optimization of vibration-induced fatigue in a generalized, linear two-degree-of-freedom inerter-based vibration isolation system. The system consists of a source body and a receiving body, coupled through an isolator. The isolator consists of a spring, a damper, and an inerter. A …
CN201121681Y
A vibration damping platform used for a two-way fine crusher relates to a mine size reduction machinery operation device, in particular to the technical structure field of a foregrinding machine at the coal preparation workshop section of a coking plant. The device consists of a steel-concrete framework connected with the fine crusher and a plurality of …
New design of the crusher supporting structure
The aim is to develop a damping device to control structural vibrations in for example free standing towers, offshore platforms and other engineering structures.
Intro to Structural Motion Control
damping ratio: (4.19) where (4.20) Equation (4.20) shows the relative contribution of the damper parameters to the total damping. Increasing the mass ratio magnifies the damping. However, since the added mass also increases, there is a practical limit on . Decreasing the damping coefficient for the damper also increases the damping. Noting …
CN219388504U
The utility model relates to the technical field of damping of crushers, in particular to a damping device for a jaw crusher. Through using mounting bracket, elevating platform and the base that set gradually from last down as damping device's structure, wherein, the mount table has been set up on the base, the mount table top edge is fixed to have set …
Spring vibration-isolated foundation of medium-speed mill.
In these calculations, ξ z 0.1; the horizontal stiffness of the system was 0.78 times the vertical stiffness; and the horizontal damping coefficient was the same as the vertical damping ...
Nonlinear passive magnetorheological damping …
Scissor-like isolation platform (SIP) with magnetorheological damper (MRD) has been commonly studied and applied successfully in vehicle vibration isolation. This paper concerns passive nonlinear magnetorheological (MR) characteristics of the SIP via geometric nonlinearity induced by MRD's layout ways. A dynamic parametric model of …
A user-configurable electric actuator hybrid test platform: …
This platform can be transferred to other medium or large electric actuator hybrid test platform, the research applications of this platform cannot be limited by their proposed setup. Firstly, the hardware system design including hybrid test facility integrated control system core architecture and all related signal routings are carried out.
This Historic 1990 Cadillac Concept Car Is Headed …
This futuristic Cadillac was a prophet of luxury sedans to come. But now, the groundbreaking car is on its way to destruction.
(PDF) Investigation of viscous damping effect on the …
This study introduces a numerical scheme for investigating the effects of viscous damping on the dynamic response of a hybrid floating platform concept. The Floating Offshore Wind Turbine (FOWT) assemblage adopted for this study is the National
CONE CRUSHER MODELLING AND SIMULATION
crusher performance. This will enable experiments and tests of virtual prototypes in early product development phases. It will also actualize simulation and provide further understanding of existing crushers in operation for e.g. optimization purposes. The platform is based on the Discrete Element Method (DEM) which is a numerical technique
Townshend Audio Seismic Isolation Podiums
The heavy steel platform is supported at each corner by Townshend's Captive Load Cells that extend beyond the perimeter of the platform, providing a stable base. The Load Cell interior houses a steel-alloy compression spring surrounded by a flexible synthetic rubber jacket with two end plates—a movement-sensitive, air-resistant …
Analysis and optimization of vibration characteristics of …
To further investigate the difference in crushing performance between rigid connection and stiffness-damping systems, a simulation analysis of gyratory crushers adopting rigid …
Modular damping platform control based on adaptive filter …
In this paper, a method based on nonlinear adaptive filter method was used to explore intelligent vibration isolation platform which can control six degrees of freedom controller design. Because active vibration isolation platform actuator is made of magnetostrictive material, dynamic hysteresis nonlinear appears in isolation platform. …
Dynamic analysis of a novel semi-submersible platform for …
The DUT Semi platform is designed to support the DTU 10 MW reference wind turbine for a designed water depth of 130 m. The schematic layout of the DUT Semi FOWT and coordinate system are presented in Fig. 1.The X-axis points to the downwind direction of the integrated system of the FOWT originated from the intersection of the …
Active damping of rotating platforms using integral force …
The suspended platform consists of two orthogonal actuators each represented by three elements in parallel: a spring with a stiffness k in N m −1, a dashpot with a damping coefficient c in N/(m/s) −1 and an ideal force source F u, F v. A payload with a mass m in kg, representing the sensitive equipment, is mounted on the (rotating ...
Platform and mooring system optimization of a 10 MW …
Fig. 2 a shows the 5 MW semisubmersible hull surface, which has been modelled in ANSYS AQWA for the calculation of Added Mass, Radiation Damping, Diffraction and Froude-Krilov Forces. To do so, a Hydrodynamic Diffraction analysis has been performed in a range of wave frequencies from 0 Hz to 0.2 Hz and wave heading …
Inerter-based damping isolation system for vibration control …
Offshore structures are critical infrastructure in the field of ocean engineering, which may under the threat of earthquake shaking, especially when they are located in the high-risk seismic zones. This paper proposes using an innovative inerter-based damping isolation system (IDIS) for the seismic protection of offshore platforms.
An integrated load-bearing and vibration-isolation supporter …
Passive control techniques can be divided into vibration isolation, damping, and absorption based on different vibration control schemes, which do not require …
Reducing Blade Fatigue and Damping Platform …
With the recent trend in wind industry to invade deep water, floating platforms are becoming an active area of research and development. The floating platform adds extra degrees of freedom (DOFs) to the turbine …
Design and simulation research of riser flexible hang-off …
Without compensation, the riser follows the platform, and the riser acceleration equals the platform acceleration. The am value is set according to the heave motion parameters of the platform. Under the back-pressure variable damping compensation strategy, the flexible hang-off device compensates the riser acceleration …
The Added Mass and Viscous Damping of a Spar Platform …
The CFD (Computational Fluent Dynamics) method was used to calculate the added mass and the viscous damping of the Spar platform considering the semi-closed moon pool in this paper. The three-dimensional models of the platform with water inside the semi-closed moon pool were established by the VOF (Volume of Fluid) …
Investigation of viscous damping effect on the coupled …
Consequently, with total damping being the sum of potential and viscous damping, the viscous damping for heave comprises to b 33 ℧ = 10.53 ∗ 10 6 k g s or 100.3% of the total damping. As for roll, the radiation damping is b 44 r ( ω 0,44 ) = 5.38 ∗ 10 6 k g m 2 s, hence 18.8% of the total damping.
FS22 Jenz Crusher Platform Pack Mod for Farming …
FS22 Jenz Crusher Platform Pack. There are 3 different sizes for each type of truck. The body position can be adjusted via the 4th control group. Therefore, many trucks are supported. To use the crane and the cameras, we recommend getting into the back of the crane. Color Changes for Crusher, Crane, Seat, and Claws.
CN208587452U
The utility model discloses a kind of crusher support platforms, including the first support plate, second support plate and support column, first support plate is arranged in parallel up and down with the second support plate, and first support plate connect with four corners of the second support plate by support column, resilient cushion is fixedly connected with …
Vibration damping pad of cone crusher
The utility model discloses a vibration damping pad of a cone crusher. The vibration damping pad comprises a lower connecting plate arranged above a base, and an upper connecting plate below the cone crusher, wherein connection holes are respectively formed in the upper and lower connecting plates; a plurality of rubber vibration damping layers …
The Design of the Shock Mitigation System of Large …
The shock absorption capacity of rubber is much larger than the metal because it can absorb and convert vibration into heat. Rubber is suitable for high frequency vibration, …
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