Dynamic Loads Analysis And Optimization Design Of The Supporting Structure System Of A Comber

In today’s rapid development, the research and development of high efficient combing machine is more and more attention. The purpose of this paper is to study the dynamic performance of the supporting structure of a comber under the high speed of500r/min, and because of the high speed, the problem of vibration reduction and noise reduction are needed. Load balancing design on main motion mechanism and optimization of structural design of supporting system are used, in order to improve the dynamic performance of the supporting system. In the process of research, the mainly works had to do as following:1. The establishment of CAD and CAE model of the supporting system of the comberAccording to actual size of the supporting system, established each parts of the supporting system in Solidworks, and built the CAD model of the supporting system.Then reference to the structural characteristics of the supporting system, the CAE finite element entity model was built based on the reasonable simplification and connection relationship processing. For the complex model, the CAE finite element entity model has lots of nodes which leads to the low computation efficiency. To improve the computation efficiency, the further simplification of the entity model is important.2. The modal analysis of the supporting system of the comberBased on the CAE entity model of the supporting system, take Ansys to calculate its inherent frequencies and vibration mode shapes.3. The dynamic load analysis of the supporting system of the comberUnder the working speed of500r/min, dynamic reaction force of the main motion mechanism of the supporting system was larger. Apply counterweight balance method to calculate the counterweight and its configuration of the main motion mechanism. Then based on the calculation results, dynamic load balancing design on main motion mechanism could be proceeded. Add the right weight to right configuration decreased the dynamic reaction force on the supporting system effectively.4. Steady state response analysis and optimization of structural design of the supporting system of the comberAccording to the established finite element model, pick the dynamic reaction force after dynamic balance design of the main motion mechanism as excitation for steady state response analysis. In the light of results from the analysis of steady state response, structural optimization design could be preceeded and made the amplitude of vibration displacement reduced by60%.