Haibat Sultan Mountain is a long range with elevation of about 860 m (a.s.l.);the PilaSpi Formation forms its carapace in Koya vicinity, with relief difference of about 300 m from Koisanjaq plain. The PilaSpi Formatio...Haibat Sultan Mountain is a long range with elevation of about 860 m (a.s.l.);the PilaSpi Formation forms its carapace in Koya vicinity, with relief difference of about 300 m from Koisanjaq plain. The PilaSpi Formation consists of well thickly to massively bedded dolostone and dolomitic limestone with thickness of about 120 m in Koya vicinity. The main trend is NW - SE being a limb of Bustana anticline representing part of the southwestern limb, with dip amount that ranges from (15 - 30). On 11th of November 2015 a landslide had occurred after a heavy rainfall along Koya - Dukan main road. The type of the slide was plane sliding due to daylight slope, which was formed after the road cut. The length of the slide area: along the road is 90 m with height of 40 m forming almost a parallelogram shape;the thickness of the slid beds is about 2.5 m. The estimated volume of the slid mass is 9000 m<sup>3</sup>. The main cause of the landslide is the presence of daylight slope, high slope angle;more than the dip angle, presence of old crack surfaces which are filled by reddish brown clayey residual soil. After the he heavy rain fall, which lasted for 20 hours, the infiltrated rain water in the bedding planes in the well bedded, cracked, and jointed beds has increased the pore pressure and decreased the internal friction angle;therefore, the sliding has occurred. The root of the slid mass is below the base of the paved road;therefore, that part which is above the paved road has slid. The remaining part is highly cracked and partly accumulated in the base of the slid mass. Fortunately, the height of the slid mass is only 40 m and the relief difference between the crown area and the toe area is about 50 m;otherwise the slid mass would be larger than the present slid mass. From the field inspection, it is very clear that the involved area is very unstable and in critical equilibrium. The presence of daylight bedding above the crown area, clayey soil in the fractures and open joints and steep slope all are very favorable conditi展开更多
剪切挤压连接是一项先进的无头轧制技术,而剪切挤压连接装置是实现中间坯连接的重要保障。依据偏心轴、滑动摆杆的相对运动关系,设计了一种中间坯剪切挤压连接装置,运用SolidWorks建立三维模型,并设计了使中间坯在连接完成时处于水平方...剪切挤压连接是一项先进的无头轧制技术,而剪切挤压连接装置是实现中间坯连接的重要保障。依据偏心轴、滑动摆杆的相对运动关系,设计了一种中间坯剪切挤压连接装置,运用SolidWorks建立三维模型,并设计了使中间坯在连接完成时处于水平方向的模具。为研究该装置在安装实体模具下的运动特性,运用Solid Works Motion仿真分析该装置的运动过程,得到该装置在剪切挤压过程中的上、下模具剪切面之间的距离在最大、最小两种情况下剪切挤压刃的水平方向速度。结果表明,当上、下模具剪切面距离在0~24. 27 mm范围内时,其上、下模具剪切挤压刃的水平方向速度都会满足设计要求。基于SolidWorks的结构设计与运动仿真分析,为剪切连接装置的静力学分析及加工制作提供了重要依据。展开更多
A high density of {110} shear planes has been observed in the R-phase (Al5CuLi3)following phase transformation from the AlCuLi icosahedral Phase. The Present paper shows that the atomic arrangement in the vicinity of ...A high density of {110} shear planes has been observed in the R-phase (Al5CuLi3)following phase transformation from the AlCuLi icosahedral Phase. The Present paper shows that the atomic arrangement in the vicinity of the shear planes can be described as a two-dimensional periodic array of atom clusters with 5-fold symmetry. This result is obtained by projecting along the [1. 618...01] direction of the atomic positions from four adjacent lattice planes that cross the shear plane. The projection reveals that the shear plane consists of pentagonal arrangements of double triacontahedra,each pentagon incorporating 606 atoms. The calculated diffraction pattern from the pentagon has approximate 10-fold symmetry characteristic of a quasicrystal.展开更多
文摘Haibat Sultan Mountain is a long range with elevation of about 860 m (a.s.l.);the PilaSpi Formation forms its carapace in Koya vicinity, with relief difference of about 300 m from Koisanjaq plain. The PilaSpi Formation consists of well thickly to massively bedded dolostone and dolomitic limestone with thickness of about 120 m in Koya vicinity. The main trend is NW - SE being a limb of Bustana anticline representing part of the southwestern limb, with dip amount that ranges from (15 - 30). On 11th of November 2015 a landslide had occurred after a heavy rainfall along Koya - Dukan main road. The type of the slide was plane sliding due to daylight slope, which was formed after the road cut. The length of the slide area: along the road is 90 m with height of 40 m forming almost a parallelogram shape;the thickness of the slid beds is about 2.5 m. The estimated volume of the slid mass is 9000 m<sup>3</sup>. The main cause of the landslide is the presence of daylight slope, high slope angle;more than the dip angle, presence of old crack surfaces which are filled by reddish brown clayey residual soil. After the he heavy rain fall, which lasted for 20 hours, the infiltrated rain water in the bedding planes in the well bedded, cracked, and jointed beds has increased the pore pressure and decreased the internal friction angle;therefore, the sliding has occurred. The root of the slid mass is below the base of the paved road;therefore, that part which is above the paved road has slid. The remaining part is highly cracked and partly accumulated in the base of the slid mass. Fortunately, the height of the slid mass is only 40 m and the relief difference between the crown area and the toe area is about 50 m;otherwise the slid mass would be larger than the present slid mass. From the field inspection, it is very clear that the involved area is very unstable and in critical equilibrium. The presence of daylight bedding above the crown area, clayey soil in the fractures and open joints and steep slope all are very favorable conditi
文摘剪切挤压连接是一项先进的无头轧制技术,而剪切挤压连接装置是实现中间坯连接的重要保障。依据偏心轴、滑动摆杆的相对运动关系,设计了一种中间坯剪切挤压连接装置,运用SolidWorks建立三维模型,并设计了使中间坯在连接完成时处于水平方向的模具。为研究该装置在安装实体模具下的运动特性,运用Solid Works Motion仿真分析该装置的运动过程,得到该装置在剪切挤压过程中的上、下模具剪切面之间的距离在最大、最小两种情况下剪切挤压刃的水平方向速度。结果表明,当上、下模具剪切面距离在0~24. 27 mm范围内时,其上、下模具剪切挤压刃的水平方向速度都会满足设计要求。基于SolidWorks的结构设计与运动仿真分析,为剪切连接装置的静力学分析及加工制作提供了重要依据。
文摘A high density of {110} shear planes has been observed in the R-phase (Al5CuLi3)following phase transformation from the AlCuLi icosahedral Phase. The Present paper shows that the atomic arrangement in the vicinity of the shear planes can be described as a two-dimensional periodic array of atom clusters with 5-fold symmetry. This result is obtained by projecting along the [1. 618...01] direction of the atomic positions from four adjacent lattice planes that cross the shear plane. The projection reveals that the shear plane consists of pentagonal arrangements of double triacontahedra,each pentagon incorporating 606 atoms. The calculated diffraction pattern from the pentagon has approximate 10-fold symmetry characteristic of a quasicrystal.
