 Wysłany: Pią 1:07, 19 Lis 2010 Temat postu: tory burch Powder Metallurgy _2081 simplified yiel |
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| Simplified yield condition of powder metallurgy materials
Yield yield surface conditions on the plane in Ji solid line the entire hexagonal yield locus (corresponding to d> 0), shown in Figure 2. Figure 2 simplified yield condition and yield condition, r above the plane of the yield locus of a similar solution, can be ≤ 0, the simplified yield condition of the yield surface on the plane in Ji yield locus for the hexagonal dotted line shown in Figure 2. Simultaneous Ji plane equation, equation (4) and (9), available at Ji ellipsoid yield criterion for the yield locus of the plane as shown in Figure 2 of the circle, and the radius r is: r = melon = √ No. y Chi consider d> O situation, from (13), (14) can be extremely hexagonal corner radius and the radius r of the ratio of:: Q once r a 1.1 +3 m (15) for different 0 values (which the plastic material with the powder density of the corresponding Poisson's ratio or, when the density is close to dense powder metallurgy materials, the value is smaller), the ratio of polar radius variation shown in Table 1. Table 1, r yield locus on the plane by the polar radius ratio of Table 1, although the simplified yield condition for the hexagonal cone shape. However, at the corner of the hexagonal cone at the ellipsoid polar radius and polar radius of the difference between the yield condition small hexagonal cone simplified yield a better approximation of the conditions. 4 Discussion and Conclusion (1) When the powder metallurgy materials become dense cast material, the plastic Poisson's ratio = 0.5, from (7), (  yields a = 0, sinO = 0, cos0 = 0. It into (5), powder metallurgy materials become simplified yield condition of Tresca dense cast material yield condition,tory burch, the geometric shape into a hexagonal cylinder from the hexagonal cone. Tresca yield condition which is the powder metallurgy materials, a special case of simplified yield condition,tory burch flip flops, the yield conditions of powder metallurgy materials simplify the whole cast dense Tresca yield conditions of the promotional material. (2) one-way compression yielding 0. ma = 0, i = a, to simplify the generation of powder metallurgy materials into the yield condition equation (5) yields: y: Health: (tan +) 'P'v''...', u plant -= (No. + √ 1 + ) (16) y,tory burch handbags, into (5), powder metallurgy materials can be simplified to determine the yield condition. (3) we can see from Figure 2,> 0 corresponds to the hexagonal cone Qu 2 Waring et al: powder metallurgy material yield condition simplifies '31 '* Technology Evaluation of China's reform policies of the mechanism of CLC: D601 literature code: D for the current science and technology in the assessment of the classification is not clear, a single evaluation criteria, the \evaluation of science and technology decision>. requirements, the evaluation of strategic basic research to the socio-economic development and national security issues of major basic science-oriented, cutting-edge science and technology innovation and integration of original innovation, and resolve the country's substantial contribution to the significant demand the main evaluation criteria; freedom to explore the evaluation of basic research to the scientific development goal-oriented, mainly to new discoveries, new concepts, new theories and new methods for evaluating the results of original and innovative standards. In addition, the Science and Technology in the evaluation of construction work to give science and technology, to provide economic support and service-oriented, with basic accuracy of the information, authoritative, systematic,tory burch shoes, continuous and shared as the evaluation criteria; application of the evaluation to traction technology push and market-oriented, technology theory, the output of independent intellectual property rights, the potential economic benefits as the main evaluation criteria; evaluation of technology industry to create business-oriented scientific and technological achievements transformation and industrialization-oriented mechanism to products, advanced technology, innovation and the development prospects for the main evaluation criteria, market-based evaluation. requirements, explore the strong, high risk projects and innovative strength of the \micro-financing opportunities for exploration, and promote creative talents come to the fore, encouraging original innovation activities. in the evaluation of the work required to actively promote the international peer review; opinion feedback mechanism to establish the evaluation, assessment appeal system and major project evaluation results of the public system; strengthen the credibility of evaluation expert system construction; improve the existing results of evaluation methods,tory burch shoe sale, the use of internationally accepted peer review and expert recommendation system. At the same time, \Supernova From <Military Communications Technology Association) 2003.5
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