共搜索到7724条信息，每页显示10条信息，共773页。用时：0小时0分2秒268毫秒
of the different wear mechanisms of conical picks in the coal cutting process and pointed out the main causes for failure of the cemented carbide head. et al [12] used the finite element method to establish...(IFOA-LSSV) method was the most effective. HUANG et al [15] used the finite element method to simulate rock cutting process under confining pressure and obtained influence of confining pressure......
their thermal expansion coefficient and that of the surrounding matrix. Fig. 8 BSE-SEM microstructure of Al0.4 sample at weld interface layer Figure 10 depicts the interface zone of C0.3 sample. In contrast......
dissipation system, in which pressure facility is considered as a source of power, tool is considered as a store of power, and workpiece is considered as a dissipater. The total power per unit volume, P...; (2) where K is the stress coefficient, and m is strain rate sensitive index deciding the power partition between G and J......
Simulated results 4.1 Extreme cases At high temperature and low strain rate, zirconium alloys may deform by prismatic, basal, pyramidal and pyramidal slips. The kind of strains... among all the tested extreme cases, whereas Cases 3 and 4 were relatively good. Table 1 Parameters τ0/τ1/θ0/θ1 (in MPa) for different cases investigated 4.2 Compromise case The previous section showed......
efficiency, μ is the friction coefficient, P is the pressure due to the tool plunge down force, W is the rotational speed, V is the travel speed, and R is the radius of the shoulder. The axial force... during dissimilar FSW at AS could be due to the high welding speed (insufficient heat input), insufficient forging pressure, and a too large joint cap [27]. Fig. 2 Macrostructures of samples......
for calculating the seepage coefficient of clay based on solidified micro-bound water[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37(4): 1004-1010. [19] 章光, 朱维申. 参数敏感性分析与试验方案优化[J]. 岩土力学......
barriers around these anvils, were used to minimize the temperature gradient along the length of the sample (Fig. 1(b)). A friction coefficient of 0.3, between the Ti6Al4V sample and Ta foil......
by sintering from 1370 to 1410 °C using sintering-HIP (hot isostatic pressing) technology with the first stage at total pressure <5 Pa and the second stage at a total pressure about 5 MPa. 2.2... collector, and a high pressure induced draft fan and other components. Fig. 1 Flow diagram for fluidized bed jet mill system Ball milling of the WC-Co mixtures is conducted using 1 L cylindrical......
standard Gibbs free energy values and their formation expresses their linear relation: = -49.947-36.30×0.99=-85.884 kJ/mol (determination coefficient is 0.9962). Thus, the value -49.947 kJ/mol is assumed......
A K, Guden M. Predicting energy absorption in a foam-filled thin-walled aluminum tube based on experimentally determined strengthening coefficient [J]. Materials & Design, 2006, 27: 263-269. [54......
