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J. Cent. South Univ. Technol. (2010) 17: 899-905 DOI: 10.1007/s11771-010-0574-5 Effects of thickness and elastic modulus on stress condition of fatigue-resistant coating under rolling contact... that the coating/substrate interface shear stress obviously decreases with increasing coating thickness, due to the location of the maximum shear stress moving away from the coating/substrate interface......
, 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......
subsea mine of China. Furthermore, thickness optimizations for the protection layers above each stope were conducted based on the maximum principle stress criterion, and the linear relations between... resultants; φx and φy are the rotations of the normal about x-axis and y-axis, respectively; w is the transverse deflection; E is the elastic modulus; μ is the Poisson ratio; h is the thickness......
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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ratio on stresses field of HDA/PEO coatings subjected to uniform normal contact load was investigated by finite element method. Results show that the surface tensile stress is mainly affected by the thickness ratio of Al layer when the total thickness of coating is unchanged. With the increase of Al layer thickness, the surface tensile stress rises quickly. When Al2O3 layer thickness increases......