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'' in preparing long afterglow phosphor materials SrAl2O4: Eu2+ ,Dy3+. The phase behavior of microemulsion was investigated. The radius of inner water droplet Rw and the change of standard free energy ΔG*o→i were... technics; microemulsion; phase chart; radius of inner water droplet; free energy; [全文内容正在添加中] ......
life; notch sensitivity; [全文内容正在添加中] ......
(1) 式中:σmax为切口根部所求点的最大拉应力；σ0为基准应力,取光滑棒料对应点处的拉应力. 图3 带偏心切口的棒料几何模型 Fig. 3 Geometric model of bar with eccentric notch 本文利用有限元软件ABAQUS对切口尖端处的拉应力进行求解.图4所示为带偏心切口的棒料有限元三维模型.为了提高计算精度,在裂纹起裂附近对网格进行加密处理,网格的最小... element models of bar with eccentric notch 2.2 偏心切口产生的应力集中增强效应 取棒料半径b=6.5 mm,保持切口根部半径h=5.5 mm,求解当名义切口偏心距e/b为0,0.03,0.06和0.09时棒料轴向和V型切口周向的应力集中系数,可以得到切口根部的应力集中系数变化情况,如图5所示.从图5所示的蓝色曲线可知:切口的存在使得棒料轴向上在A点产生比较大的......
radius of injecting hole and infiltration intensity around injecting hole 2.3.2 注液孔半径与影响半径的关系 现讨论稳渗状态下影响半径随注液孔半径的变化规律.由模型计算的数据可得,液面高度为0.69 m,0.95 m,1.13 m 3种情况下,影响半径随注液孔半径的变化规律如图8所示. 图8 注液孔径对影响半径的影响 Fig. 8 Influence of aperture on influence radius 从图8可以看出,当注液孔半径小于0.2 m时,随注液孔孔径增加,影响半径成非线性增加；当注液孔半径大于0.2 m时,随注液孔孔径增加,影响半径近似成线性增加.为进一步反映注液孔孔径对影响半径的影响,采用幂函数R=A′×r0B′(A′和B′为拟合参数)拟合影响半径与孔径的关......
扩展速率; 高温; 缺口尺寸; 应力比; 试样厚度; 16MnR steel; fatigue crack growth rate; high temperature; notch sizes; R-ratio; specimen thickness; [全文内容正在添加中] ......
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410083, China; 2. Guangxi Xianglu Construction Co. Ltd, Nanning 530029, China) Abstract: In order to study the pressure distribution and diffusion radius of slurry throughout fissure section, overcome..., rheology index, grouting time, the height of the fracture and diffusion radius or grouting pressure were mainly discussed, which provided theoretical basis for the grouting design of geotechnical fissure......
response radius of energy pile in its whole life cycle WANG Zhe1, LIU Yejun1, ZHANG Zhengwei2, WENG Kaiwen1, ZHENG Xiuling2, XU Sifa1 (1. School of Civil Engineering, Zhejiang University of Technology... exchanger in engineering, the temperature of pile-group buried heat exchanger was calculated by superposition principle, and the thermal response radius of pile-based buried heat exchanger was defined......
strain spread from near vertical to ±40°. Strain distribution in the region about a radius away from the notch root is relatively uniform and spare. Due to the strain concentration effect, the raised... with various compressive loads and notch diameters were studied by DIC. The experimental results can provide effective reference to usage of CT specimens in triaxial creep test by appropriately selecting......
