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, not normal fault slip. And the incremental strains of lining in critical zone with 1.7 times fault thickness and centered in faults induced by normal fault slip and seismic excitation are larger than... near or crossing fault zone is more easily damaged in seismically active zones such as Wenchuan, Chi-chi, Kobe [3-6]. The normal fault slipping is caused by tectonic stress or earthquake and results......
DOI: 10.11817/j.issn.1672-7207.2019.06.020 基于Normal分布的岩石统计热损伤本构模型研究 朱振南1,蒋国盛1,田红1,吴文兵1,2,梁荣柱1,2,窦斌1 (1. 中国地质大学(武汉) 工程学院,湖北 武汉,430074; 2. 浙江大学 滨海和城市岩土工程研究中心,浙江 杭州,310058) 摘要:基于Lemaitre应变等价性理论的岩石损伤模型,假定受热损伤的岩石微元强度服从Normal分布,考虑温度对岩石力学参数的影响,引入热损伤变量,在微元破坏符合Mohr-Coulomb准则条件下,建立高温作用后岩石统计热损伤本构模型.依据岩石屈服的概念,利用极值法确定模型参数,并与不同温度下花岗岩的压缩试验结果进行对比分析.研究结果表明:本模型所得曲线与三轴压缩试验曲线较吻合,并能很好地反映高温作用后岩石软化特征;本模型不包含非常规岩石力学参数,便于......
elliptical bulge test, which can load and research thickness normal stress. Theoretical analysis model of the overlapping elliptical bulging was described, the equivalent stress-strain curves of target... sheet; elliptical bulge; thickness normal stress 1 Introduction The determination of the materials’ flow properties is one of the important subjects to research the deformation behavior of metal......
are calculated through the DFC-MK model. The DFC-MK model, which includes the influence of through-thickness normal stress, is written into the subroutine VUMAT embedded in Abaqus/ Explicit. The cylindrical...; ductile fracture criteria; warm hydroforming; through-thickness normal stress 1 Introduction The forming limit of sheet metals is an important process parameter and the main basis for mould design......
Effects of normal stress, surface roughness, and initial grain size on the microstructure of copper subjected to platen friction sliding deformationShan-quan Deng,Andrew-William Godfrey,Wei Liu,Cheng... normal stress, surface roughness, and initial grain size on the microstructure of pure Cu developed during platen friction sliding deformation(PFSD) processing were investigated. In each case......
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on accumulated pore water pressure in saturated normal consolidation clay. Two models can take cycle number, coupling of static and dynamic deviator stress, and consolidation way into consideration...: saturated normal consolidation clay; equivalent dynamic stress level; accumulated pore water pressure model; attenuation-type curve; failure-type curve 1 Introduction In railway and urban transit......
coefficient K-and thickness t-values of the overlapping sheet metal.Based on the stress,deviator stress and strain distribution resulted from the finite element simulation,it indicated that the uniform transverse normal pressure has no effect on deviator stress,the figure and strain distribution of bulge specimens have no change.The non-uniform transverse normal pressure can remarkably change......
-dimensional graphic visualization of the normal stress that the strain state of the corner is shortened in the thickness direction and elongated in the hoop direction. The plastic deformation firstly... of normal stress was done. The stress locus in the yielding-cylinder was obtained. It is shown that the plastic yielding firstly occurred in the outer layer of the corner. The inner layer of the corner......
and seepage behaviors of a single rock fracture subjected to lateral stress and normal stress. The first unit has three jacks which can apply loads independently in three orthogonal directions.... The results show that both the normal deformation and the hydraulic conductivity are influenced not only by the normal stress but also by the lateral stress. It is also shown that the aperture......