| 粘弹塑性体的三维有限元分析及其在采矿工程中的应用 |
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| 引用本文： | 李元松,徐长佑.粘弹塑性体的三维有限元分析及其在采矿工程中的应用[J].武汉理工大学学报,1993(2). |
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| 作者姓名： | 李元松 徐长佑 |
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| 作者单位： | 武汉工业大学资源工程系
(李元松)，武汉工业大学资源工程系(徐长佑) |
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| 摘 要： | 本文选用广义开尔文体和滨汉姆体相串联的粘塑性力学模型,描述了开挖围岩的瞬变和蠕变应变。基于该模型推导了针对各种屈服准则的粘塑性应变增量的隐式统一式,并编制了三维有限元程序。同时,用参数变换法实现了三维有限元网格划分的计算机化,结合工程实例系统地实现了对岩体工程开挖围岩力学特性的空间模拟,分期开挖及围岩蠕变的计算分析,计算程序可供设计和工程问题研究中参考。
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| 关 键 词： | 围岩 蠕变 三维有限元 隐式积分 应力圆滑 网格划分 |
Thtrr-dimension Finite Element Calculating Method for Visoo-eiastic Viscoplastic Solids and its Application in Mining Engineering |
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| Li Yuansong,Xu Changyou Dept. of Resource Engineering,WUT.Thtrr-dimension Finite Element Calculating Method for Visoo-eiastic Viscoplastic Solids and its Application in Mining Engineering[J].Journal of Wuhan University of Technology,1993(2). |
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| Authors: | Li Yuansong Xu Changyou Dept of Resource Engineering WUT |
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| Abstract: | In this paper, a rheological model with Kelvin and Bingham bodies coupled in series
is proposed to simulate the instantanceous eiastic deformation and creep of a rock mass. Based on this
model,a unified expression of the fully implicit time integration sheme in the visco-plastic analysis
of finite method is derived. And for this purpose a finite element program for three dimensional
problems has been set up. The node stresses are smoothed by means of the Least Square Method, and
a volume modal point mesh generator has been set up by means of parametric transformations.
Conneted with mining engineering practice. It is systematically adapted to simulate the mechanical
properties of the surrounding rock struture, the procedure of rock. The results of the calculation and
the program can be used for design and reserch of underground construction. |
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| Keywords: | surrounding rock creep three-dimensional finite element method implicit time integration stress smoothing mesh generating |
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