Analysis And Research Of Wave Spring Mechanical Properties

The Wave Springs (WS) are a kind of elastic element widely used in practical works andexperiments. Because of their generally less axial length and therefore less need of installationspaces compared with the traditional springs, they have been nowadays gradually replacingthe outdated ones. The relatively lower requirement of installment spaces and of the quantitiesof materials leads to a substantial reduction of costs. The wave springs can be employed asloads in the bearings substituted for most of traditional springs. In the working status, thewaving springs with unlimited value of pressures can be created by adjusting thecompensatory sizes and thereby produces a gradual or sudden reached default work high inorder to accumulate loads. Using the ration of loads over deformations, the elastic coefficientcan be produced more accurately. In this paper, I employ UG three-dimension modeling andWorkbench finite element analysis and gain the performance parameters of the wave springsin order to provide the basis for the use and election of wave springs.At the very beginning of this paper, previous literatures are referred and on the basis ofthis I derive the theoretical formula computing the rigidity. Then put the formula into the UGand draw the main trunk of springs using the law curves in order to modeling the parameters.Import the constructed CAD model of the wave spring into ANSYS Workbench through theseamless interface to simulate the loading process of the wave spring and then get a shiftinesscurve. Next, I employ the nonlinear finite element method to simulate the combined wavespring under a real working condition and compare the parallel and series connection ofsprings with the same parameters while different structures. The result shows that differentkind of springs can be applied under different working conditions and the parallel connectionsprings suit better the status of loading whilst the series connection springs are moreappropriate for the large degree of deformation conditions. Afterwards, I test the stiffness ofthe wave spring and compare the test results with the output of the theoretical calculation aswell as the findings of the finite element analysis. The results show that the finite elementanalysis is a effective method to study the wave spring properties. Although there exits some limitations to the theoretical calculation, it is still useful for examining the mechanicalproperty of the wave springs after the proper adjustment of the formula. The mode number ofthe combined wave springs is negatively correlated with the number of wave layers and thefictional coefficient has a lag effect on the amount of compress: the more the coefficient offiction, the bigger the lag (i.e., the actual working stiffness of springs is larger). At last, Iconduct a kinetic analysis of the wave spring and gain the natural frequency through themodal analysis and the resonance response by the harmonic response (dynamic response)analysis.