Micromechanics of Internal Friction of Filler Reinforced Elastomers

摘要: To calculate themechanical behavior of a loaded component the engineer needs model which describes stress-strain-behaviour. In order to relate properties rubber and filler those filled elastomer we use microstructure-based approach where material parameters are physical quantities, instead mere fit parameters. Core is hydrodynamic reinforcement elasticity (tube model) by stiff clusters. The deformation concentrated at smaller part total volume, resulting in an amplification stress. Under stress, clusters can break become soft, leading larger parts volume related stress softening. effect expressed as integral over “surviving” section cluster size distribution. On other hand, cyclic breakdown re-agglomeration soft causes hysteresis. Filled elastomers also show certain inelastic behaviour called setting. corresponding contribution modeled semi-empirical dependency with respect maximum deformation. Using dumbbell specimens, have done uniaxial stress-strain measurements tension compression.Parameterfits that satisfactorily compression tension-tests.Generally, lie physically reasonable range. For first time (formulated exponent) softening been implemented into FE code. A rolling wheel under load simulated.