Nonlinear dynamic analysis of the deposited layer-PVC composite structure: A new way for cleaning PVC drainage pipe pollution

Abstract

As one of the drainage pipes widely used in the world, the removal of pollutant deposition in PVC drainage pipe is the key problem. In this paper, a structural resonance technique is proposed to accelerate the removal of pipeline sediments. Considering the sedimentary layer in PVC pipe is mainly concentrated on the inner pipe wall on the lower side, the composite beam model is introduced to describe the interaction between sediment layer and PVC pipe in this paper. Hamilton's principle is introduced to establish the governing equations of the deposited layer-PVC material composite beam, and the nonlinear dynamic characteristics of the system are analyzed and the resonance conditions are calculated. So far, several possible resonance conditions have been found theoretically. The ideal one has been selected by numerical simulation and experiment measures. And then, the structure is optimized by discussing the influence of random motion on the deposition layer-PVC composite beam. Finally, the Abaqus finite element software is used for simulation verification. The results of numerical simulation and experiment data indicate that the resonance technique for cleaning PVC drainage pipe pollution is effective and the ideal condition exits in the several conditions which have been deduced by theoretical calculation.