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۱Classical and Generalized coupled thermoelasticity in functionality graded layers
اطلاعات انتشار: هجدهمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۶
In this paper the equations for The generalized coupled thermoelasticity based on the extended Lord–Shulman (LS), Green–Lindsay(GL) and Green–Naghdi type II models that admits the second sound effect are solved to study the dynamic thermoelastic response of a 1– Dimensional functionality graded (FG) layer by employing finite element method using the theory of virtual displacement and the implicit Newmark algorithm. The layer material is considered to be graded along wave propagation direction and the element takes into account the variation of thermal and mechanical properties along its depth, which can be modeled by explicit distribution law like the power law distribution. A Heaviside input signal of thermal shock load, heat flux and displacement exerted to the boundary. The effects of thermoelastic coupling factor and the volume fraction on the thermoelastic waves are investigated. Propagation of stress, temperature and displacement wave with time is presented. A comparison is made with results obtained in case of homogenous material in the literatures.<\div>

۲Finite Element Analysis of One–dimensional Classical Coupled Thermoelasticity of a Layered Slab
اطلاعات انتشار: هجدهمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۵
The behavior of thermoelastic waves at the interface of layered media and distributions of these waves through the domain are examined by using direct finite element method to obtain the field variables directly in the space and time domains. The analysis is performed in a onedimensionaldomain with two different layers to provide a means to follow the behavior of the reflected thermoelastic waves at the interface. The materialcharacteristics of layers are selected in both hypothetical and practical ways. This can assure us that the method is applicable for both theoretical and practical purposes. It found that the distributions of thermoelastic waves in an isotropic slab with one layer are significantly different from those in multilayered slabs. This method may be generalized to simulate the propagation of thermoelastic waves in different multilayer regions and analyze the behavior of the layered composite structures under the mechanical or thermal impact loads.<\div>
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