运用弹性力学与塑性力学理论，对常用弯管工艺过程进行受力分析。
The force with process of bending pipe has been quantitatively and qualitatively analyzed in the theories of elasticity mechanics and plasticity mechanics.
为解决路基土力学课题，分析时多采用与岩土材料力学性质相适应的弹性、粘弹性以及塑性理论。
Usually, Elastic, plastic and viscoelastic theories are used in FEM to solve soil mechanics problems of embankment.
然而，至今只有岩土极限分析与塑性力学中考虑岩土体的内摩擦力，而在弹性理论与能量理论等诸方面均未体现。
However, until now the internal friction is only considered in limit analysis and plastic mechanics, but not included in elastic mechanics and energy theory.
然而，至今只有岩土极限分析与塑性力学中考虑岩土体的内摩擦力，而在弹性理论与能量理论等诸方面均未体现。
However, until now the internal friction is only considered in limit analysis and plastic mechanics, but not included in elastic mechanics and energy theory.
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