Uniaxial tension of drying sieves

Abstract

Although the literature contains numerous studies that have been developed to describe the nonlinear behavior of drying sieves' operation, there are no papers in this which report deeper investigation of the drying sieve behavior when exposed to tension and thermo stabilization. The aim of this paper is to provide insight into the elastoplastic behavior of the thermo stabilized and not stabilized sieves subjected to the tensile force. Within this work both theoretical and experimental investigations were performed. The sieves were joined by using a spiral. In separate experiments tests of wire base and weft of the weave mesh were performed, both for thermo stabilized and not thermo stabilized sieves, sieves joining and the sieve thermo stabilization itself. It was established that the thermo stabilization of sieves provides for stability of sieves' dimensions and that open thermo stabilized drying sieve exhibits better mechanical properties and exploitation characteristics then the sieves joining. [Projekat Ministarstva nauke Republike Srbije, br. ON174004: Micromechanics criteria of damage and fracture and br. TR 32036: Development of software for solving the coupled multi-physical problems]

Iako literatura sadrži brojne studije koje su razvijene da bi opisale nelinearna ponašanja sušnih sita, radovi iz ove oblasti nisu dublje istražili ponašanje sušnih sita pri zatezanju i termostabilizaciji. Cilj ovog rada je da pruži uvid u elastoplastično ponašanje termostabilizovanih i netermostabilizovanih sita pod dejstvom sile zatezanja. U okviru ovog rada izvršena su teorijska i eksperimentalna ispitivanja. Spajanje sita je izvršeno pomoću spirale. U odvojenim eksperimentima je radjeno ispitivanje žica osnove i potke od kojih se tkaju sita, netermostabilizovana sita, termostabilizovana sita, spojevi sita, kao i eksperiment termostabilizacije sita. Ispitivanjem se došlo do zaključka da termostabilizovana sita obezbeđuju stabilnost dužine i širine sita, kao i da otvoreno termostabilizovano sušno sito ima bolje mehaničke osobine i eksploatacione karakteristike nego spoj sita.