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for concrete to develop reliable models forpredicting the lateral load-carrying capacity of the SCB (Fig. 4). Fig. 2 Photo of SCB Fig. 3 Cross section of SCB Shell element S4 was used to simulate... into three categories as shown in Fig. 1: 1) the steel plate is located in the center of cross section of the shear wall [2-3]; 2) the steel plate is located at one side of the shear wall [4-5]; 3......
pressure on train cross-section surface: Fig.12 Cut-planes from nose Fig.13 Static pressure coefficient contours on cut-planes at different positions (WWC): 7.4 Flow around trains As the pressure...J. Cent. South Univ. (2016) 23: 2735-2746 DOI: 10.1007/s11771-016-3335-2 Detached-eddy simulation of flow around high-speed train on a bridge under cross winds CHEN Jing-wen(陈敬文)1, 2, GAO Guang-jun......
continuously fabricated by two different extrusion processes, forward extrusion and lateral extrusion. The effects of processing parameters in the extrusion process on extrusion rate were studied. The results... temperature raising induced by deformation also affects the extrusion rate. The premium parameters are obtained, in the forward extrusion the premium pressure is 215kN; while in the lateral extrusion......
exit becomes compressive stress, and the radial stress and compressive stress are almost equal. 3.2 Final stage When lower billet is extruded at the final stage of extrusion process, shrinkage... to cause the shrinkage cavity, as shown in Fig.8(a). Fig.8 Metal flow line on section at final stage of extrusion under conditions of without (a) and with (b) guiding angle It can be seen from......
extruded bars reveals that almost all grains are reasonably equiaxed and homogeneously distributed along the bar as well as in the cross section at extrusion temperatures of 250, 300 and 350... electron microscopy (SEM). 3 Results and discussion 3.1 Microstructure Fig.1 shows the optical microstructures of cross sections of AZ31 Mg alloy after extrusion ratio of 100 at different temperatures......
The initial extrusion temperature is set to be 430 °C, the ram speed is 0.5 mm/s, and the billet length is 300 mm. Because the aluminum alloy helical surface cross-section area is fixed, extrusion ratio can... of helical profile is different in each section after extrusion die, and the longer the extrusion length, the lower the temperature of helical profile extrusion products. The temperature variation......
, 141/142/143: 91-96. [2] LIU G, ZHOU J, DUSZCZYK J. Prediction and verification of temperature evolution as a function of ram speed during the extrusion of AZ31 alloy into a rectangular section [J... and Engineering, 2002, 10(1): 1-11. [16] ZHANG Xiao-hua, CHENG Yuan-sheng, LUO Shou-jing. Numerical simulation of temperature field of AZ91D magnesium alloy during equal channel angular extrusion [J]. Acta......
arbitrary cross-section can be manufactured by the extrusion process. In addition to the use of aluminum materials to minimize the weight, a tube with better design in terms of the crashworthiness...-DYNA. Geometry of these tubes was then optimized by decreasing the cross section dimensions at the distal end while the weight remained unchanged. Octagonal conical tube was finally found to be more......
J. Cent. South Univ. (2012) 19: 1317-1321 DOI: 10.1007/s11771-012-1144-9 Scattering loss in optical waveguide with trapezoidal cross section PENG Wen-qiang(彭文强), WU Yu-lie(吴宇列), LIU Yong(刘勇... waveguide manufacture process in the chemical etching and reactive ion etching, the trapezoidal cross section waveguide can be easily received. Since these methods have been widely used, the trapezoidal......
. The deformation procedure of billet includes four stages: upset stage, early extrusion stage, uniform extrusion stage and end extrusion stage. The shape change procedure of groove cross-section during extrusion... process of Al/Cu clad composite Fig. 5 Shape change procedure of groove cross-section during extrusion deformation: (a) Initial groove shape; (b) Groove shape in cone-shaped deformation area; (c......
