Muzaffer METİN, Göktürk TAŞAĞIL, Berk BAŞGÖL, Timuçin BAYRAM

Elastomer Karakterizasyon Test Sistemlerinin Modellenmesi veParametrik Analizleri

Bu çalışmada, üzerinde elastomer malzeme barındıran burç gibi makine parçalarının statik ya da dinamik karakterizasyon testlerindekullanılan hidrolik eyleyicili test sistemi modellenmiştir. Burada, literatürde yer alan viskoelastik malzemeler için geliştirilmişmatematiksel modellere sistemin kütle değişkeni de ilave edilerek daha gerçekçi modeller oluşturulmuştur. Daha sonra, viskoelastikmalzeme modellerinin hidrolik test sistemi ile birleştirilmesiyle birlikte test sisteminin genel modeli elde edilmiştir. Bu kapsamda, katıve sıvı viskoelastik modeller ayrı ayrı ele alınmış ve analiz edilmiştir. Parametrik simülasyonlarla yapılan dinamik analizlerde,viskoelastik model parametrelerinin malzeme üzerinde oluşan kuvvet, hız ve yer değiştirme gibi dinamik cevaplara etkileri ortayakonmuştur. Bu çalışmadan elde edilen bilgiler ışığında, malzeme karakterizasyon testlerinden elde edilecek veriler kullanılarak testiyapılan malzmelerin dinamik model parametrelerinin kestirimi ve bunlara ait dinamik model kurulumu daha kolay yapılabilecektir.

Modelling and Simulation of Elastomer Materials Test System

In this study, hydraulic actuator test system, which is used in static or dynamic characterization tests of machine parts such as bushingwith elastomer material, is modeled. Here, more realistic models were created by adding the mass variable of the system to themathematical models developed for viscoelastic materials in the literature. Then, the general model of the test system was obtained bycombining the viscoelastic material models with the hydraulic test system. In this context, solid and liquid viscoelastic models arehandled and analyzed separately. In dynamic analysis with parametric simulations, the effects of viscoelastic model parameters ondynamic responses such as force, velocity and displacement on the material have been revealed. In the light of the information obtainedfrom this study, using the data obtained from the material characterization tests, it will be easier to estimate the dynamic modelparameters of the tested materials and to set up their dynamic models.

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