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本文首先提出小变形耦合热弹塑性损伤问题的一个自由能形式的变分原理。然后利用该变分原理导出了一组守恒积分方程并定义了守恒积分。
This paper first proposes a variational principle of the free energy form of the small deformation coupled thermal elastoplastic damage problem. Then using this variational principle, a set of conservative integral equations are derived and the conserved integrals are defined.