Abstract
Filled rubbers are used popularly in damping parts which can be found in automobile sector or in building sector. However, the mechanical properties of material depend sensitively on temperature, chemical composition and environment conditions. In fact, the mechanical dissipation due to damping process leads to the increase of temperature considerably. Aging process can be activated sequentially by the heat which result in the change of damping properties during usage time. This paper presents a new behavior model that considers the simultaneous effects of temperature, mechanical loads on the behavior of materials along with the aging of materials. With the assumption of internal variables related to aging phenomenon and visco-plastic behavior, the model is built in the thermodynamical framework. A fully coupled finite element formulation is proposed to solve simultaneously thermo, chemical and mechanical phenomenon appeared in this material. An example illustrates the number of applicability of the model to predict the behavior of materials under the effect of cyclic loads in extremely working conditions.
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