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首页> 外文期刊>Journal of thermal stresses >SOME HAMILTONIAN-TYPE VARIATIONAL PRINCIPLES FOR MOTIONS OF A HYGROTHERMOELASTIC MEDIUM
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SOME HAMILTONIAN-TYPE VARIATIONAL PRINCIPLES FOR MOTIONS OF A HYGROTHERMOELASTIC MEDIUM

机译:流体热弹介质运动的一些哈密顿型变分原理

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摘要

In a mathematical modeling of the physical behavior of a hygrothermoelastic medium, a moisutre field vector and a thermal field vector are introduced, HUamilton's principle is stated, and a three-field variational principle is derived. The differential variational principle is shown, as Euler-Lagrange equations, to generate the divergence equations and the associated natural boundary conditons of a hygrothermoelastic medium. This vawriaitonal principle is augmented through an involutory transformation in order to incorporate the gradient equations and the constitutive relations of an anisotropic hygrothermoelastic medium; hence, a ten-field variational principle is formulated and some of its special versions recorded.
机译:在对湿热弹性介质的物理行为进行数学建模的过程中,引入了Moisutre场矢量和热场矢量,阐述了HUamilton原理,并推导了三场变分原理。差分变分原理以Euler-Lagrange方程形式显示,可生成湿热弹性介质的发散方程和相关的自然边界条件。通过不规则变换来增强这种垂直原理,以便将梯度方程和各向异性吸湿热弹性介质的本构关系结合到一起。因此,制定了十场变分原理并记录了其中的一些特殊版本。

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