| 层状地壳的等效力学模量和分层应力 |
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| 关键词:multi-layer crust effective moduli layered bending stress |
| 基金项目:国家自然科学基金,地质力学开放实验室项目 |
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| 摘要: |
| The Effective Elastic Moduli and State of Stress in the Multi-layer Crust |
| In order to adapt plate and shell models to studying geodynamic problems in the representative crustal layer, this paper gives the location of the neutral plane,general expressions of effective bending stiffness and elastic moduli of the multi-layer plate according to the effective principle. They are expressed in terms of thickness of each layer and elastic moduli of the plate.The author introduces this effective method in detail to solve the problem of stress and deformation in the crust by using a model of three-layer plate subjected to vertical and horizontal loads. The difference between the effective stress and the layered stress in the crust is pointed out. It is the rock mechanical property that affects state of the stress in layered crust.The author holds that the vertical upward forces from the deep crust is an important factor that causes the tensile tectonic deformation at the surface of the earth. |
| WU Hong-ling.1999.The Effective Elastic Moduli and State of Stress in the Multi-layer Crust[J].Acta Geoscientica Sinica,20(3):225-231. |
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