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强地震荷载作用下含断层岩质边坡稳定性分析 总被引:2,自引:0,他引:2
基于岩石材料的弹塑性损伤理论,引入两个独立的损伤变量分别控制岩石的拉压行为,通过对地震荷载作用下边坡场地响应的有限元数值模拟,总结含裂隙的岩质边坡发生局部损伤软化、破坏的区域的扩展、演化过程和规律. 结合对某大型水电坝坝址左岸的岩质边坡在强地震动载荷作用下(百年一遇、超越概率2\%)发生破坏的数值模拟,揭示这类边坡滑坡的机理,并根据模拟的结果,对整治边坡破坏提出参考依据. 相似文献
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对饱和砂土在冲击载荷下发现的变形和流动效应进行了落锤模拟实验研究,发现砂土骨架出现纵向排水通道和横向断裂等现象,对可能影响这些现象的主要因素进行了对比的实验,对上述实验现象进行了初步的解释. 相似文献
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This paper presents the fully differential cross sections (FDCS) for
102eV electron impact single ionization of helium for both the
coplanar and perpendicular plane asymmetric geometries within the
framework of dynamically screened three-Coulomb-wave theory.
Comparisons are made with the experimental data and those of the
three-Coulomb wave function model and second-order distorted-wave
Born method. The angular distribution and relative heights of the
present FDCS is found to be in very good agreement with the
experimental data in the perpendicular plane geometry. It is shown
that dynamical screening effects are significant in this geometry.
Three-body coupling is expected to be weak in the coplanar geometry,
although the precise absolute value of the cross section is still
sensitive to the interaction details. 相似文献
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从总循环应变能的角度出发, 提出了一个新的疲劳寿命计算模型, 通过对30CrMnSiA 钢和AISI 4340钢两种材料的的疲劳寿命计算, 并与相关实验数据对比, 证明了该模型计算疲劳寿命较为准确. 相似文献
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We investigate the entanglement properties between two identical atoms with cascade configuration through the retarded dipole-dipole interaction in free space when their spatial separation is on the order of radiation wavelength or less. We analyze the function of Hamiltonian induced by dipole-dipole interaction. By solving master equation, we show that the spontaneous emission induce entanglement and destroy entanglement too. We also show the long life time of entanglement within cascade configuration. 相似文献
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