The Choice of Best-Fit Mathematical Models of the Behaviour of Rubber Compounds for Finite Element Analysis

Influence of EBR on the structural resistance of RC slabs under quasi-static and blast loading: Experimental testing and numerical analysis

“…The constitutive behaviour of the rubber sheets in the supports is described by the uniparameter material model MAT_BLATZ-KO_RUBBER, which allows to model the properties of low-compressibility solid materials. The Piola-Kirchhoff stress, the relative volume, defined as the ratio of the current volume to the initial volume, and the right Cauchy-Green strain tensor are automatically generated [41]. The Poisson's ratio is ν = 0.463 [29].…”

Determining the Parameters of a Viscoelastic Mathematical Model of the Behaviour of Rubber Compounds for the Purpose of Engineering Analysis in Computer Program Packages

“…Investigations have shown [1] that, when solving thermomechanical problems in the LS-DYNA program package, the best agreement between actual and virtual tests of rubber compounds under up to 50% strain is obtained when the viscoelastic mathematical model MAT_VISCOELASTIC is used.…”

“…Investigations were conducted on the influence of the tensile loading regime on the damping factor β during subsequent relaxation. A typical curve taken on the Instron Tensometer 2020 was given in a previous paper [1]. As follows from the data obtained during testing of rubber compounds based on natural rubber, the damping factor β is influenced considerably both by the magnitude and by the rate of strain.…”

“…Thus, in a previous paper [1], on the basis of an analysis of models of the behaviour of material in the LS-DYNA program package, for description of the behaviour of rubbers and mechanical rubber goods, for the purpose of finite element analysis in thermomechanical formulation, a viscoelastic model of material was proposed. In this work, the nature of the influence of the loading rate and temperature on the parameters of the model has been shown.…”