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黄茂松, 钱建固, 吴世明
岩土工程学报,2002,24(1):21~25,-0001,():
-1年11月30日
有限元法求解应变局部化问题时经常受到单元尺寸敏感性问题的困扰。为克服这一难题,给出一种基于整体坐标的应变局部化的复合体理论,通过对剪切带内外土体力学特性进行均一化处理来描述含剪切带土体的宏观力学特性。首先从理论上分析了饱和土体应变局部化的产生条件,随后通过复合体理论给出了描述在排水条件和不排水条件下饱和土体应变局部化的本构方程,最后对平面应变条件下的饱和密砂试样进行了分析,通过与室内平面应变试验结果的对比,验证了本文理论的合理性。
饱和土体, 应变局部化, 剪切带, 平面应变试验, 复合体理论
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黄茂松, 钟辉虹, , 吴世明, 张亦静
岩土工程学报,2002,24(5):629~632,-0001,():
-1年11月30日
通过对饱和软黏土进行一系列应力控制的循环三轴试验,结合各向同性弹塑性边界面模型数值模拟,得出了软黏土在不排水条件下受循环荷载作用时的累积残余变形规律。
软黏土, 循环三轴试验, 累积残余变形, 边界面塑性, 数值模拟
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【期刊论文】Incompressible or nearly incompressible soil dynamic behaviour
黄茂松, Maosong Huanga, *, Shiming Wua, O.C. Zienkiewiczb
Soil Dynamics and Earthquake Engineering 21(2001)169-179,-0001,():
-1年11月30日
The restriction of the Babuska-Brezzi stability criteria for the mixed formulation requires non-uniform interpolation of displacement and pore-pressure variables, which complicates the coding in the
Saturated soft dynamics, Staggered algorithm, Finite elements, Mixed formulation, Incompressible behaviour
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黄茂松, 钱建固, 吴世明
岩土工程学报,2001,23(3):306~310,-0001,():
-1年11月30日
为台理描述土坝由于地震荷载引起的应变局部化与渐进破坏现象,本文采用了一种基于类似位移梯度的误差指示的自适应罔格有限元技术,同时还将快速的、无条件稳定的分步时域解法与自适应技术结合起来 文中对美国著名的Lower San Fcxnaado土坝的分析.显示了本文提出的有限元新技术的有效性。
应变局部化, 渐进破坏, 自适应有限元, 分步解法, 动力固结
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【期刊论文】MODELING OF THERMOMECHANICAL EFFECTS OF ALKALI-SILICA REACTION
黄茂松, By Maosong Huang and S. Pietruszczak
JOURNAL OF ENGINEERING MECHANICS, APRIL 1999,-0001,():
-1年11月30日
In this paper, a nonlinear continuum theory is applied to model the thermomechanical behavior of concrete subjected to alkali-silica reaction. The reaction results in formation of silica gel around the aggregate particles, which expands triggering a progressive damage of the material. The expansion rate is assumed to be controlled by the alkali content, the magnitude of confining stress as well as the evolution of the temperature. The progress in the reaction is assumed to be coupled with degradation of the mechanical properties of concrete. First, the constitutive model describing the thermomechanical effects of the reaction, as recently developed by the second writer, is presented. Subsequently, numerical examples are provided to assess the performance of the proposed formulation. In particular, the model is applied to analyze different structural elements of the Beauharnois power plant, situated in Quebec, Canada.
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