Algorithm Optimization And Analysis Of Wind Power Locking Disc

Shrink disk belongs to multi-layer interference fit connection, which cantransmit torque, axial force or combined loads. It is divided into single anddouble tapered conical shrink disk used for fields of heavy machinery such aswind power equipment, transportation, mining machinery and so on. Theresearch object of this study—wind turbine’s shrink disk—belongs tosingle-tapered conical shrink disk. It is an important connection component inwind generator, which mainly locks shaft and sleeve of planet. The actualworking condition of wind turbine’s shrink disk is relatively complex, and maylead to failure and shorten service life.Three different kinds of calculation methods have been proposed in thestatic structure design in this paper. And considering working environment ofwind turbine’s shrink disk, establishing theoretical model with a morecomprehensive algorithm, the calculation method of wind turbine’s shrink disk,under the effect of temperature and the centrifugal force, is given. It hastheoretical significance to apply theory algorithm to practical use. The maincontents of this research are as follows:In terms of the static structure calculation, according to the structurecharacteristics of wind turbine’s shrink disk and thick cylinder theory, therelationship between magnitude of interference and contact pressure of matingsurfaces is established and magnitude of wind turbine’s shrink disk is obtained.Moreover, according to basic theory of interference fit connection in mechanicaldesign handbook, surface displacement of cylinder layers and contact pressurerequired to eliminate assembly clearance can be calculated. Two kinds ofalgorithms of contact pressure on mating surfaces and magnitude of interferencefor wind turbine’s shrink disk are concluded.In the optimization calculation considering temperature and centrifugalforce, according to the theory of thick-well cylinders, theory of thermal elasticmechanics and theory of heat transfer, calculation method of radial displacementof pressured thick wall cylinder considering temperature and centrifugal force is derived. Then the algorithm is combined with static structure theory algorithmmethod, when considering the temperature field and centrifugal force, contactpressure of the mating surface and magnitude of interference can be concluded.In terms of finite element simulation analysis, firstly, a two-dimensionalaxisymmetric model is set up and boundary conditions are given, the constraintsand load are determined by finite element analysis software ABAQUS. Influencelaws of wind turbine’s shrink disk propel travel on contact pressure, magnitudeof interference and Von Mises stress are obtained. Then the distribution ofcontact pressure, magnitude of interference and Von Mises stress are obtained byrespective loading temperature field and the centrifugal force. Finally, theaccuracy of the proposed method is validated by comparative analysis of thetheoretical value and simulation value.