China Classification Society Certification Company

Beijing, China

China Classification Society Certification Company

Beijing, China
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Zhang Y.,Beijing Technology and Business University | Fu C.,China Classification Society Certification Company | Sheng Z.,China Classification Society Certification Company | Meng C.,Beijing Technology and Business University
2012 2nd International Conference on Consumer Electronics, Communications and Networks, CECNet 2012 - Proceedings | Year: 2012

A large amount of bolt connections are frequently used in WTG. Combining characteristic of WTG bolt connection, with the connection of pitch bearing inner circle and blade as the research object, using finite element method, build multiple connection model, adopt multi-point constraints and nonlinear contact for finite element analysis, research on bolt rod element types, connections of each component and the establishment of contact, acquire the analysis result of different fine degrees from bolt stress to thread contact stress, puts forward the feasible finite element analysis scheme of wind generator bolt connection. © 2012 IEEE.


Hu F.,China Ship Scientific Research Center | Sheng Z.,Harbin Engineering University | Sheng Z.,China Classification Society Certification Company | Liu X.,China Ship Scientific Research Center
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2014

The fluid-structure interaction analysis for aerodynamics performance of composite blades of 2 MW wind turbine was carried out based on coupling method of Computational Fluid Dynamics(CFD) and Finite Element Method(FEM), in which the data transfer on fluid-structure interaction interface of the aerodynamic external loads of blades and structural deformation displacement was especially discussed. Reynolds-averaged Navier-Stokes equations and SST k-ω turbulence model were used for mathematical simulation of flow field around the rotating blades. The pressure distribution on the blade surface for static analysis was interpolated onto the structure mesh node by a C-coding program, which realized the data transfer from the fluid field to structure field. And the blade deformation obtained from the static analysis, formed a new geometry model for the flow, also by a C-coding program. The new geometry was imported to the flow field for numerical simulation again, which realized the data transfer from the structure field to fluid field. ©, 2014, Taiyangneng Xuebao/Acta Energiae Solaris Sinica. All right reserved.


Liu X.,China Ship Scientific Research Center | Sheng Z.,Harbin Engineering University | Sheng Z.,China Classification Society Certification Company | Huang S.,China Ship Scientific Research Center | Jiang F.,China Classification Society Certification Company
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2013

The CFD technique was applied to calculate and analyze aerodynamic performance of blade aerofoil and wind turbine blade in the paper. The calculated results have high precision at small attacking angles and reasonable tendency at large attacking angles between - 180°-180° based on the comparison between calculated results and experiments for the aerofoil. The calculated results have good agreement with those by wind turbine design and analysis software Focus for wind turbine blade at design and yawing conditions. The verification results show that the numerical method using CFD is effective on aerodynamic performance analysis and the future modification of aerodynamic design for blade aerofoil and wind turbine blade.


Ma L.,China Classification Society Certification Company | Liu H.,Chinese Aeronautical Establishment | Wang S.,China Classification Society Certification Company
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2015

This paper aims to compare the difference between GL 2010 and IEC 2005 standard with GH Bladed software and a III A direct drive wind turbine, including input parameters, calculation cases, calculation results of ultimate and fatigue loads. The analysis indicates that ultimate loads in blade root and hub with IEC 2005 are larger than those with GL 2010, but ultimate loads in tower and yaw bearing with GL 2010 are larger than those with IEC 2005. It showed that difference from wind conditions, calculation methods and statistic modes is responsible for the different ultimate loads. However fatigue computation results with GL 2010 standard are close to those with IEC 2005 standard. It recommends that wind turbine computations with IEC 2005 standard are suitable for great simulation of wind conditions and steady load results in statistics characteristic. ©, 2015, Science Press. All right reserved.

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