| 地壳块体应力场动力学演变过程仿真的初步研究 |
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| 引用本文： | 何振,王乘,牛安福,郑文衡.地壳块体应力场动力学演变过程仿真的初步研究[J].大地测量与地球动力学,2000,20(1):1-7. |
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| 作者姓名： | 何振 王乘 牛安福 郑文衡 |
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| 作者单位： | 1. 华中理工大学力学系,武汉,430074
2. 中国地震局地震研究所,武汉,430071 |
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| 摘 要： | 运用三维非线性动态有限元方法,研究华北地壳块体对渤海、黄海潮汐水位变化的动态响应,得出该块体中各力学量随时间演变的数值结果以及动态、直观的三维仿真映象,并以此探索计算力学与地学综合研究的途径.从仿真模拟结果可以看出:华北地区近期发生的几次较大地震均在应力较大或应力变化剧烈的地点.由于海洋动态载荷的量级小,计算结果的应力绝对值也很小,因此,这种吻合表明较小的动态载荷下的动态响应揭示了孕震构造的特征,显示了应力集中的地点.
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| 关 键 词： | 地壳应力 华北 三维动态有限元 潮汐 非线性 |
| 修稿时间： | 1999-04-30 |
PRELIMINARY RESEARCH ON EMULATING THE DYNAMIC EVOLUTION OF CRUSTAL STRESS, STRAIN AND DEFORMATION |
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| He Zhen,Wang Cheng,Niu Anfu,Zheng Wenheng.PRELIMINARY RESEARCH ON EMULATING THE DYNAMIC EVOLUTION OF CRUSTAL STRESS, STRAIN AND DEFORMATION[J].Journal of Geodesy and Geodynamics,2000,20(1):1-7. |
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| Authors: | He Zhen Wang Cheng Niu Anfu Zheng Wenheng |
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| Institution: | He Zhen, Wang Cheng,Zheng Wenheng
(Centre China University of Science and Engineering,Wuhan 430074)
Niu Anfu
(Institute of Seismology,CSB, Wuhan 430071) |
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| Abstract: | Using the 3D dynamic finite element method the dynamic response of the North China crustal block to the water level variation of Bohai Sea and yellow sea is studied.The mechanical quantity varying with time and the 3D visualized moving pictures in crustal block are obtained, and based on which,the comprehensive approach to emulate the mechanics and geonomy is explored. From the emulating results,it could be seen that several late fairly big earthquakes in studied area occured in the place where the stress is higher or varies quickly.The calculated absolute stress value is small due to the small magnitude of the load. |
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| Keywords: | crustal stress North China 3D dynamic FEM tide non-linearity |
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