The peculiarity of this wellbore stability model is to determine whether the wellbore rock is in the critical plastic state rather than elastic limit state.
依据井壁围岩是否达到临界塑性状态而不是弹性极限状态来判断井壁稳定性是气体钻井井壁稳定分析模型的特殊之处。
In order to study how the static preloading affects on the buckling stability of columns or cylindrical shells, a simple imperfection-sensitive elastic-plastic model is used.
为了研究静力预加载荷对诸如柱、圆柱壳等结构动态稳定性的影响，采用了一种简单的缺陷敏感弹塑性模型。
Based on the elastic-plastic finite element method and strength reduction method, the stability of the rock slope behind the powerhouse of Jiudianxia hydroelectric station was studied and evaluated.
采用弹塑性有限元法和强度折减法，对九甸峡水电站厂房后岩体边坡进行稳定性计算分析和评价。
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