Dynamic And Static Simulation And Analysis Of Shafting Construction

In recent years, through theory and computer simulation studies of gears and bearings, literature, and for the gear shaft and bearing shafting structure study is less, in their analysis, as the research object is a single, combined with local conditions it is difficult to determine, can't correctly reflect the shafting structure components interact with each other, so in order to accurately simulate the workings of the shafting structure, need structure carries on the overall analysis of shaftingThis article is based on shafting construction as research objects, the shafting construction is composed of gear shaft-gear-rolling bearing. Using the finite element software ANSYS for the static analysis and using the explicit dynamics software ANSYS/LS-DYNA for the dynamic mechanical analysis, Considering the influence for the static and dynamic property of shafting construction, the change for axis is not parallel of the gear assembly error and consider the change for bearing radial clearance. Lay a solid foundation for the integrity analysis of shafting construction.First, this article introduces the contact theory, including the Hertz contact theory of classic, the basic equation of contact problem and algorithm of solving the contact problem. Introduces the basic content of the finite element method, including the application of the finite element method, general program structure of the finite element method. Discussing the ANSYS contact problem, including the contact types and contact algorithm. Lay a solid foundation for the integrity analysis of contact finite element analysis of shafting construction.Second, using the 3D modeling software Pro/e to complete the model for shafting construction, realizing the parameterized modeling of gear, the developed cycle is shortened, the design quality is improved. The design cost is shortened through this method.Then, using the finite element software ANSYS for the static analysis. Considering the change for axis is not parallel of the gear assembly error, comparing the simulation analysis of shafting structure, in the actual assembly, should be strictly control gear assembly error and ensure the normal operation of shafting structure.Finally, using the explicit dynamics software ANSYS/LS-DYNA for the dynamic mechanical analysis. Considering the influence for the static and dynamic property of shafting construction, the change for axis is not parallel of the gear assembly error and consider the change for bearing radial clearance. Lay a solid foundation for the integrity analysis of shafting construction. Reaching the conclusion about the shafting construction maximum equivalent stress also increases accordingly with the increase of axial error of the uneven row, the bearing radial clearance and has important effect on the stability and variation of stresses of the shafting structure.According to application conditions on the structure of the shaft system, the reasonable selection of selecting the appropriate clearance, make better effect on stress or stability.