Research On Frequency Varying Characteristics Of Dynamics Parameters For Contacting Between The Contact Roller And The Package

The vibration characteristics of the whole winding parts is affected by dynamics parameters for contacting in between the contact roller and the package.The contact stiffness and contact damping are two important parameters to characterize the dynamics parameters for Contacting in between the contact roller and the package.The research of frequency varying characteristics of contact stiffness and contact damping can help the chemical fiber factory to set technological parameters conveniently and reasonably,and can provide parameter for manufacturer to design winding machine.In this paper,by the method of combining experiment and theory,the frequency varying characteristics of dynamics parameters for contacting in between the contact roller and the package are studied.Do basic test and research the development of filament winding equipment.The winding process are completed based on the contact roller winding machine with package mutual coupling.The research methods and the structural parameters which according with the actual working condition of winding machine are decided in this paper.First of all,the typical process of polyester filament winding machine is analyzed,and the movement characteristics of the working process of the contact coupling system is clarified in a single winding cycle.The research methods and theories about frequency varying characteristics of dynamics parameters for contacting between the contact roller and the package are described.The forced non-resonant test method is selected as a research method for the frequency varying characteristics of dynamics parameters for contacting in between the contact roller and the package.Secondly,according to the actual working condition of the contact roller and the roll contact,the parameters of test model are determined.The model of the physical test is designed and produced by the theory of single degree of freedom forced the resonance method,which including determine the excitation amplitude and excitation frequency in test system,standard parts,the frequency of data collection and data processing method,and the influence of the supporting frame to the model of the test is analyzed.Then,the winding process is completed according to the coupling between the winding machine contact roller and the package.Different package diameter and different contact roller pressure applied on package are determined as the main influence parameters,and a complete program has been designed for experimental research.Through the test data obtained from the original data analysis to get amplitude and frequency characteristics of data,then,the stiffness coefficient k(?)and the damping coefficient c(?)of the contact between the contact roller and the package of the winding machine are studied by univariate analysis.The frequency-dependent regulations of the stiffness coefficients and the damping coefficient of contact roller and package under different package diameter,different contact roller pressure applied on package are obtained respectively.And the frequency-dependent characteristic curves of the contact parameters of the contact roller and the package under different parameters were fitted with MATLAB.At the same time,the test notes are listed and the test error is analyzed.At last,using the ANSYS Workbench,the stiffness coefficient k(?)and the damping coefficient c(?)calculated from the test data are taken into the finite element model of the single "contact roll-package" corresponding to the experimental test model.And carry out harmonic response analysis,the simulation results are compared with the experimental results,and the validated evidence is provided to determine the accuracy of the data obtained from the test model.