Virtual Prototype Modeling and Dynamics Analysis of a Large-Scale Wind Turbine’s Gearbox

2011 ◽  
Vol 314-316 ◽  
pp. 1043-1047
Author(s):  
Guo Yu Hu ◽  
Wen Lei Sun
Keyword(s):  
Optimal Design ◽  
Angular Velocity ◽  
Wind Turbine ◽  
Large Scale ◽  
Virtual Prototype ◽  
Design Parameters ◽  
Prototype Model ◽  
Flexible Body ◽  
Dynamics Analysis ◽  
Simulation Results

With the gearbox of a large-scale wind turbine as a study object, the virtual prototype model of gearbox is created based on UG and ADAMS softwares according to its design parameters such as structure and size. By rigid and flexible dynamics analysis for gearbox, the angular velocity and acceleration curves of the in-out shaft are obtained. Gear meshing forces and flexible body stress cloud using ADAMS are also obtained. It is verified that these results are coincided with the theoretical value through analysis and the simulation results of ADAMS are valid. The simulation results show that the design level of wind turbine gearboxes can be improved using the virtual prototype technology and lay a good foundation for further optimal design.

Dynamics Analysis and Parameter Optimization of New Vibration Platform

2014 ◽  
Vol 1061-1062 ◽  
pp. 771-775
Author(s):  
Yan Bin Liu ◽  
Chen Xu Yin ◽  
Jia Jia Ma
Keyword(s):  
Frequency Response ◽  
Parameter Optimization ◽  
Prototype Model ◽  
Flexible Body ◽  
Dynamics Analysis ◽  
Frequency Model ◽  
Body Model ◽  
New Type ◽  
Simulation Results ◽  
The Stability

A new type of vibration platform was presented and its dynamic characteristics was studied in this paper, A virtual prototype model of vibration platform was built by using software Soldworks and ADAMS.The flexible body model of spring was built based on ADAMS flexible module,rigid-flexible coupled dynamic of vibration platform were analyzed by using simulation, the natural frequency, model of vibration and frequency response were further analyzed. The stiffness of spring and flexible cable were optimized according to the analysis results, The post-optimality simulation results show that the stability and frequency response of vibration platform have improved.

Kinematics Analysis of a 6-DOF Riveting Manipulator Based on ADAMS

2014 ◽  
Vol 887-888 ◽  
pp. 1257-1260
Author(s):  
En Liu ◽  
Kai Zeng ◽  
Sheng Wan Yuan ◽  
Gang Wei Cui ◽  
Xiao Cong He ◽  
...  
Keyword(s):  
Inverse Kinematics ◽  
Simulation Analysis ◽  
Virtual Prototype ◽  
Design Parameters ◽  
Prototype Model ◽  
Kinematics Analysis ◽  
Kinematics Model ◽  
Linkage Design ◽  
Simulation Results ◽  
Kinematics Parameters

In this paper, a 6-DOF riveting manipulators kinematics model was built by D-H method, and its kinematics problems were discussed. Each of the kinematics parameters was gotten by solving the direct and inverse kinematics functions in Matlab. Then the virtual prototype model of the riveting manipulator was built by ADAMS, and the position, velocity and acceleration in the end center of the riveting manipulator were gotten by the simulation analysis. The reasonability of each linkage design parameters and kinematics model could be verified by simulation results in ADAMS, a foundation could be laid for the further dynamics research.

Study on Dynamic Simulation of Wind Turbine Gearbox Based on Pro/E and ADAMS

2014 ◽  
Vol 644-650 ◽  
pp. 442-445
Author(s):  
Wen Zhi Yang ◽  
Ju Feng Cao ◽  
Wei Zhang
Keyword(s):  
Wind Turbine ◽  
Virtual Prototype ◽  
Prototype Model ◽  
Solid Model ◽  
Wind Turbine Gearbox ◽  
Adams Simulation ◽  
Adams Software ◽  
Box Structure ◽  
Virtual Prototyping Technology ◽  
Necessary Constraints

Domestic wind turbines with 1.5MW gearbox as the research object, application of virtual prototyping technology (ADAMS) simulation of dynamics of wind turbine gearbox when braking .According to research gear box structure, size and other parameters, using Pro / E software to create a solid model of wind turbine gearboxes. After importing to the ADAMS software, add the necessary constraints and loads, virtual prototype model of the gearbox is established. The simulation of dynamics of wind turbine gearbox are carried out by using ADAMS, and the angular velocity of the in-out shaft, gear meshing force and the vibration when braking cloud are obtained. That result is match with the theoretical value through analysis and the accuracy of ADAMS simulation is verified. The simulation results show that the design level of wind turbine gearboxes can be improved by using the virtual prototype technology and lay a good foundation for further design.

scholarly journals An experimental study of the optimal design parameters of a wind power tower used to improve the performance of vertical axis wind turbines

2018 ◽  
Vol 10 (9) ◽  
pp. 168781401879954
Author(s):  
Soo-Yong Cho ◽  
Sang-Kyu Choi ◽  
Jin-Gyun Kim ◽  
Chong-Hyun Cho
Keyword(s):  
Experimental Study ◽  
Optimal Design ◽  
Wind Turbine ◽  
Wind Power ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Power Coefficient ◽  
Design Parameters ◽  
Vertical Axis Wind Turbine ◽  
Vertical Axis Wind Turbines

In order to augment the performance of vertical axis wind turbines, wind power towers have been used because they increase the frontal area. Typically, the wind power tower is installed as a circular column around a vertical axis wind turbine because the vertical axis wind turbine should be operated in an omnidirectional wind. As a result, the performance of the vertical axis wind turbine depends on the design parameters of the wind power tower. An experimental study was conducted in a wind tunnel to investigate the optimal design parameters of the wind power tower. Three different sizes of guide walls were applied to test with various wind power tower design parameters. The tested vertical axis wind turbine consisted of three blades of the NACA0018 profile and its solidity was 0.5. In order to simulate the operation in omnidirectional winds, the wind power tower was fabricated to be rotated. The performance of the vertical axis wind turbine was severely varied depending on the azimuthal location of the wind power tower. Comparison of the performance of the vertical axis wind turbine was performed based on the power coefficient obtained by averaging for the one periodic azimuth angle. The optimal design parameters were estimated using the results obtained under equal experimental conditions. When the non-dimensional inner gap was 0.3, the performance of the vertical axis wind turbine was better than any other gaps.

High Speed PIV Measurement of Impinging Flow on a Horizontal Axis Wind Turbine

2012 ◽  
Author(s):  
J. Stephen Hu ◽  
Jian Sheng ◽  
Michele Guala ◽  
Leonardo Chamorro
Keyword(s):  
Boundary Layer ◽  
Angular Velocity ◽  
Wind Turbine ◽  
Power Output ◽  
High Speed ◽  
Large Scale ◽  
Flow Structures ◽  
Flow Conditions ◽  
Horizontal Axis Wind Turbine ◽  
Impinging Flow

The focus of this paper is to characterize the upstream wake of a three bladed Horizontal Axis Wind Turbine (HAWT) and its interaction with the native structures within a turbulent boundary layer (TBL). The overarching question is the most prevailing length and time scales of coherent structures that would interact with a HAWT and how they would be affected. The implications include wall flow and structure interaction and flow induced noise generation in large scale turbo machineries. The experiments are performed on a turbine that has a 0.128 m rotor diameter, a hub height of 0.104 m and a tip speed ratio of 4. The HAWT model is placed in a large scale wind tunnel in a boundary layer with a thickness δ of ∼0.6 m. The boundary layer is generated by a 60 mm picket fence trip and developed over a smooth wall under thermally neutral conditions. Measurements are performed under ReD of 4 × 105 and 6 × 105. Both turbine geometries and flow conditions are scaled from operating conditions in the field. High speed Particle Image Velocimetry (PIV), turbine voltage output, and angular velocity measurements are conducted simultaneously, by which one could relate the upwind flow structures with the power output of the turbine. High speed PIV offer details in spatial and temporal characteristics of the impinging flow structures, whilst the voltage anemometer and tachometer provide instantaneous measurement of angular velocity of the turbine. PIV measurements are taken at a rate of 1500 image pairs per second with a 100 μs delay between laser pulses. Each sample area is 0.15 × 0.15 cm. Two locations up to two rotor diameters upwind are measured. Instantaneous voltage is taken at a sampling rate of 30 kHz and a sampling time of 60s to ensure sufficient temporal resolution and coverage. Ongoing analysis using conditional averaging based on extreme power output events will provide insights in assessing a HAWT performance in unsteady flow conditions.

A scale-up nanoporous membrane centrifuge for reverse osmosis desalination without fouling

TECHNOLOGY ◽  
2018 ◽  
Vol 06 (01) ◽  
pp. 36-48 ◽  
Author(s):  
Qingsong Tu ◽  
Tiange Li ◽  
Ao Deng ◽  
Kevin Zhu ◽  
Yifei Liu ◽  
...  
Keyword(s):  
Angular Velocity ◽  
Reverse Osmosis ◽  
Large Scale ◽  
Md Simulation ◽  
Scale Up ◽  
Scale Separation ◽  
Nanoporous Membrane ◽  
Micron Size ◽  
Simulation Results ◽  
Reverse Osmosis Desalination

A scale-up nanoporous membrane centrifuge is designed and modeled. It can be used for nanoscale scale separation including reverse osmosis desalination. There are micron-size pores on the wall of the centrifuge and nanoscale pores on local graphene membrane patches that cover the micron-size pores. In this work, we derived the critical angular velocity required to counter-balance osmosis force, so that the reverse-osmosis (RO) desalination process can proceed. To validate this result, we conducted a large scale (four million atoms) full atom molecular dynamics (MD) simulation to examine the critical angular velocity required for reverse osmosis at nanoscale. It is shown that the analytical results derived based on fluid mechanics and the simulation results observed in MD simulation are consistent and well matched. The main advantage of such nanomaterial based centrifuge is its intrinsic anti-fouling ability to clear [Formula: see text] and [Formula: see text] ions accumulated at the vicinity of the pores due to the Coriolis effect. Analyses have been conducted to study the relation between osmotic pressure, centrifugal pressure, and water permeability.

scholarly journals Dynamic Simulation of UHMWPE Cable Winding Process of Parallel Grooved Multi-Layer Drum Based on ADAMS

2021 ◽  
Author(s):  
Fankai Kong ◽  
Wenbo Cui ◽  
Fei Chen ◽  
Zhenyang Wang ◽  
Zhongchen Zhou
Keyword(s):  
Simulation Model ◽  
Dynamic Simulation ◽  
Simulation Analysis ◽  
Virtual Prototype ◽  
Prototype Model ◽  
Specific Load ◽  
Rotating Speed ◽  
Simulation Results ◽  
Prototype Software ◽  
Selection Of

According to the insufficient force analysis of the cable in the process of winch retraction, especially the insufficient research on the flexible cable retraction process such as the UHMWPE cable, the dynamic simulation analysis of the retraction process of the parallel grooved multi-layer drum and UHMWPE cable cable is carried out by using the virtual prototype software ADAMS. The simulation model of the cable is created by using the macro command program, and the virtual prototype model of the cable drum is completed, and the force changes of the cable under different rotating speeds are simulated.The simulation results show that the contact force between the cable and the double winding drum can be quickly stable under the specific load, and with the increase of the rotating speed, the maximum value of the tension change of the cable increases, but it is finally stable at a fixed value. The results can provide some reference for structural strength calculation of cable storage drum, selection of high molecular polyethylene cable and dynamic analysis of cable arranger under load.

scholarly journals Design and Simulation of Liftable Crawler Chassis for Combine Harvester

2018 ◽  
Vol 8 ◽  
pp. 1476-1487
Author(s):  
Jing Bo ◽  
Xu Lizhang
Keyword(s):  
Angular Velocity ◽  
Hydraulic Cylinder ◽  
Virtual Prototype ◽  
Prototype Model ◽  
Connecting Rod ◽  
Angle Variation ◽  
Adams Software ◽  
Combine Harvester ◽  
Left And Right

Aiming at the needs of field operations in different deep mud, a liftable crawler chassis based on the connecting rod arm mechanism was designed, including the chassis upper frame, lifting mechanism, hydraulic cylinder, limit mechanism, left and right walking system. In the ADAMS software, a virtual prototype model of the lifting and lowering chassis is established. The angle variation of the frame on the chassis relative to the ground and the angular velocity and acceleration of each lifting rod were simulated and analyzed. These rules met the chassis lifting adjustment requirements during the harvester operation.

The Research of the Four-Bar Bionic Active Knee

2011 ◽  
Vol 308-310 ◽  
pp. 1988-1991 ◽  
Author(s):  
Ki Jun Kim ◽  
Cheng Dong Wu ◽  
Fei Wang ◽  
Shi Guang Wen
Keyword(s):  
Angular Velocity ◽  
Knee Joint ◽  
Mr Damper ◽  
Optimization Method ◽  
Virtual Prototype ◽  
Ball Screw ◽  
Design Parameters ◽  
Rotational Axis ◽  
Joint Structure ◽  
Damper Control

The robot joints are usually rotational axis by two link joints, bionic features is not strong. The shortcomings of intelligent MR damper control multi-axis bionic knee can only provide resistance and certain sizes to regain momentum, cannot provide larger power, therefore this paper gives by the multi-axis four-bar structure, ball screw transmission multiaxial bionic active knee institutions. And analysis the human leg institutions and commonly used two-bar structure, through multi-variable optimization method to solve the design parameters of knee joint structure, the motor angular velocity and torque. And established in a bionic active the knee's virtual prototype.

Computational Fluid Dynamics Study of a Small Vertical Axis Wind Turbine with Ball-Shaped Blades

2011 ◽  
Vol 347-353 ◽  
pp. 319-322
Author(s):  
Zu Peng Zhou ◽  
Qiu Yun Mo ◽  
Zhi Peng Lei
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Wind Turbine ◽  
Power Efficiency ◽  
Vertical Axis ◽  
Curvature Radius ◽  
Dynamics Analysis ◽  
Vertical Axis Wind Turbine ◽  
Computational Fluid Dynamics Analysis ◽  
Simulation Results

The computational fluid dynamics analysis of a small vertical axis wind turbine with ball-shaped blades has been done in this paper. First, a three-dimensioned model of the wind turbine with the ball-shaped blades has been constructed by using the software of FLUENT 6.3. Then, by giving the size parameters and shape parameters of the blades, the simulation has been done and the corresponding simulation results have been obtained. The contuours of static pressure around the wind blade area has been shown. The simulated model and the results can be used for finding the factors which will affect the power efficiency of this type of wind turbine in the future. Finally, the simulation results of the blade with zero curvature radius and curvature radius of 2 are shown and compared in order to demonstrate the effectiveness of this computational fluid dynamics analysis method. It can be concluded that the blades with curvature of 2 can obtain more toruqe comparing with the zero one and it would be the more suitable option in the blade design.

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