关于构造带变形能的有限元法数学模拟

Finite Element Numerical Model for Deformation Energy of Structural Belts

本文是在同一外力和边界及岩石力学性质条件下，用有限元数学模拟的方法研究不同构造变形带内部变形能的差别和分布问题。形状改变能（或称歪变能）ＵＷ比体积改变能（或称体变能）ＵＴ大将近一个数量级，ＵＷ、ＵＴ和构造变形能ＵＢ在挤压、剪切和引张变形岩带中总体依次逐步变小。ＵＷ和ＵＢ大致呈较大→大→小的变化，而ＵＴ却呈大→较大→小的趋势性变化。利用构造变形能这种规律，结合构造附加静水压力研究，进而探讨构造变形热及其影响流体运移等问题。

The difference and distribution of inner_deformation energy in different structural belts under the same external force and boundary and lithomechanic character are studied by finite_element numerical model. Energy of shape changing (or distortional energy) U W is bigger almost a number level than energy of volume changing (or dilation energy) U T . U W and U T and structural deformation energy U B gradually decrease successfully in the compressive, shearing and extentional deformation belts. U W and U B roughly have a bigger→big→small distribution variation, and U T has a big→bigger→small trend variation. This law of structural deformation energy, in addition to the study on hydrostatic pressure derived from structure, is of important consult value to research the structural deformation heat and its impact on fluid migration.