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首页> 外文期刊>Journal of thermal stresses >Analytical aspects in strain gradient theory for chiral Cosserat thermoelastic materials within three Green-Naghdi models
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Analytical aspects in strain gradient theory for chiral Cosserat thermoelastic materials within three Green-Naghdi models

机译:三种绿色Naghdi模型中的手性Cosserat热弹性材料应变梯度理论的分析方面

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摘要

This work is motivated by the recent interest in using strain gradient theory to model the chiral behavior of elastic materials. In this paper, we derive a linear strain gradient theory for Cosserat thermoelastic materials according to the three models (types I, II and III) of Green-Naghdi theory. Models II and III permit propagation of thermal waves at finite speeds, while model I coincides with the classical Fourier's law. The thermal field is influenced by the displacement and the microrotation fields and by some additional parameters that describe the chiral behavior. We prove the well-posedness for the three models and the asymptotic behavior for models I and III by the semigroup theory of linear operators.
机译:这项工作是由于近期使用应变梯度理论来模拟弹性材料的手性行为的兴趣。在本文中,我们根据绿色Naghdi理论的三种模型(类型I,II和III),推导出用于Cosserat热弹性材料的线性应变梯度理论。模型II和III允许热浪在有限速度下传播,而模型则与古典的傅立叶定律一致。热场受到位移和微机器场的影响,并通过描述手性行为的一些附加参数。通过半群线性运营商的半群理论,我们证明了三种模型和模型渐近行为的渐近行为。

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