Taiyuan University of Science and Technology

Taiyuan, China

Taiyuan University of Science and Technology is a university in Shanxi, People's Republic of China under the authority of the provincial government. It is located in the capital city of Shanxi Province, Taiyuan, a historical and cultural city.Taiyuan University of Science and Technology is a comprehensive university with distinct characteristicsTemplate:Such as? and splendid traditionsTemplate:Such as?. It has been one of the major bases for training the technical personnel and scientific research in he field of heavy technological equipment manufacture in China. Wikipedia.

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Taiyuan University of Science and Technology | Date: 2017-01-04

A hydraulic rolling-cut shears, including: a horizontally disposed hydraulic cylinder; a shear mechanism including an upper tool post and a lower tool post; a linkage mechanism including a first upper connecting rod, a first lower connecting rod, a second upper connecting rod, a second lower connecting rod, and a synchronous connecting rod; and supports including a hydraulic cylinder support and a guiding rod support. The hydraulic cylinder is hinged to and disposed on the hydraulic cylinder support through a first pin. One end of the first upper connecting rod, one end of the first lower connecting rod, and one end of the synchronous connecting rod are hinged to one end of a piston rod of the hydraulic cylinder via a second pin. The first upper connecting rod, the synchronous connecting rod, and the first lower connecting rod are disposed at one side of the hydraulic cylinder support.

Tian W.,Taiyuan University of Science and Technology | Chen H.,Xihua University
Scientific Reports | Year: 2016

Using the first-principles calculations, the electronic structure, chemical bonding, mechanical, thermodynamics and superconductor properties of NbRuB are investigated. The optimized lattice parameters were in good agreement with the experimental data. The analysis of the density of states and chemical bonding implies that the metallic behavior of NbRuB originates from the Ru and Nb, and the bonding behaviors are a mixture of covalent-ionic bonds. The bulk modulus, shear modulus, Young's modulus, Poisson's ratio and hardness of NbRuB were calculated. The results reveal that the NbRuB is ductility and the Vickers hardness is 15.06 GPa. Moreover, the 3D dependences of reciprocals of Young's modulus is also calculated and discussed, showing strong anisotropic character for NbRuB. Finally, the Debye temperature and superconducting transition temperature are obtained.

Ren H.,Taiyuan University of Science and Technology | Cheng Y.,Shanghai University
Engineering Analysis with Boundary Elements | Year: 2012

In this paper, the moving least-squares (MLS) approximation and the interpolating moving least-squares (IMLS) method proposed by Lancaster are discussed first. A new method for deriving the MLS approximation is presented, and the IMLS method is improved. Compared with the IMLS method proposed by Lancaster, the shape function of the improved IMLS method in this paper is simpler so that the new method has higher computing efficiency. Then combining the shape function of the improved IMLS method with Galerkin weak form of the potential problem, the interpolating element-free Galerkin (IEFG) method for the two- dimensional potential problem is presented, and the corresponding formulae are obtained. Compared with the conventional element-free Galerkin (EFG) method, the boundary conditions can be applied directly in the IEFG method, which makes the computing efficiency higher. For the purposes of demonstration, some selected numerical examples are solved using the IEFG method. © 2011 Elsevier Ltd. All rights reserved.

Gu J.,Lanzhou University | Gao Z.,Taiyuan University of Science and Technology | Tang Y.,Lanzhou University
Crystal Growth and Design | Year: 2012

A ligand 5-(2′-carboxylphenyl) nicotic acid (H 2cpna) has been successfully applied to construct a series of coordination complexes {[Cd(Hcpna) 2(H 2O) 2]•3H 2O} n (1), [Cd(cpna)(H 2O)] n (2), [M(cpna)(2,2′-bipy)(H 2O)] n (M = Cd (3), Co (4), and Mn (5)), [Co(cpna)(phen)(H 2O)] n (6), [Mn(cpna)(phen) (H 2O)] n (7), {[Nd(Hcpna)(cpna)(H 2O) 2]•3H 2O} n (8), and {[Ln(Hcpna)(cpna)(phen) ]•2H 2O} n (Ln = Pr (9), Nd (10), Eu (11), and Gd (12), 2,2′-bipy = 2,2′-bipyridine, phen = 1,10-phenanthroline) under hydrothermal conditions. By adjusting the reaction pH, H 2cpna ligand is partially deprotonated to form Hcpna - in 1 and completely deprotonated to create cpna 2- in 2-7, and both forms are observed in 8-12. Complexes 1-5 and 8 possess two-dimensional (2D) layered structures, which are further extended into 3D metal-organic supramolecular frameworks by C-H•••O hydrogen bond and/or π-π stacking interactions. Complexes 6, 7, and 9-12 exhibit one-dimensional (1D) chain structures, which further build three-dimensional (3D) supramolecular architecture via C-H•••O hydrogen-bonding and/or π-π stacking interactions. The results revealed that the pH value of the reaction system and auxiliary ligand play an important role in determining the structures of the complexes. Magnetic susceptibility measurements indicate that compounds 4-10 and 12 have dominating antiferromagnetic couplings between metal centers. Furthermore, thermal stabilities for 1-12 and luminescent properties for 1-3, and 11 are also discussed in detail. © 2012 American Chemical Society.

Li J.-N.,Hangzhou Dianzi University | Li L.-S.,Taiyuan University of Science and Technology
Neurocomputing | Year: 2015

In this paper, the mean-square exponential stability problem for discrete-time recurrent neural networks with time-varying discrete and distributed delays is investigated. Considering the delay distributions, a novel class of Lyapunov functional is introduced. By exploiting all possible information in mixed time delays, a sufficient condition for the whole system to be mean-square exponentially stable is given. Numerical examples are proposed to illustrate the effectiveness of the method, and show that by using the approach in this paper, the obtained results are less conservative than the existing ones. © 2014 Elsevier B.V.

Cui Z.,Northwestern University | Gao F.,Northwestern University | Cui Z.,Taiyuan University of Science and Technology | Qu J.,Northwestern University
Journal of Power Sources | Year: 2012

A second nearest-neighbor modified embedded atom method (2NN MEAM) interatomic potential for lithium-silicon (Li-Si) alloys is developed by using the particle swarm optimization (PSO) method in conjunction with ab initio calculations. It is shown that the new interatomic potential is capable of simulating the transition from disordered to ordered states of Li-Si crystalline structures, an indication of the stability and robustness of the interatomic potential at finite temperature. Examples are given to demonstrate that the new interatomic potential is also capable of predicting the material properties of both crystalline and amorphous Li-Si alloys, including the elastic modulus, compositional expansion, diffusivity of Li in Li-Si alloys, plastic yield strength, etc. © 2012 Elsevier B.V. All rights reserved.

Song S.,Taiyuan University of Science and Technology
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | Year: 2013

A novel double shell-pass heat exchanger with sleeve tube and continuous helical baffles was proposed. The sleeve tube was applied to separate the shell-pass into two parts, the inner one having no baffles and the external one with helical baffles. Based on the 3-dimensional physical model of the heat exchangers, with the k- turbulent model, SIMPLE pressure-velocity coupling algorithm and segregated solver, the flow and heat transfer characteristics of the novel double shell-pass heat exchanger with sleeve tube and continuous helical baffles were studied by means of computational fluid dynamics (CFD) software. The results indicate that, under same velocity flow rate, the pressure drop of the novel heat exchanger is 62.17% and 22.76%, lower than the conventional segmental baffled heat exchangers and conventional helical baffled heat exchangers. The heat transfer rate is increased by 25.98% and 21.79% compared with the two types of heat exchangers. The pressure drop under unit heat transfer rate was applied to evaluate the comprehensive performance of heat exchangers. Compared to these two types of heat exchangers, the value of the novel heat exchanger is reduced by 68.93% and 38.69%, respectively.

Liu L.-Q.,Taiyuan University of Science and Technology | Liu C.-X.,Taiyuan University of Science and Technology | Wang J.-S.,Taiyuan University of Science and Technology
Renewable and Sustainable Energy Reviews | Year: 2013

In order to realize the sustainable development of country and society, many countries have established their renewable energy law and development strategy no matter developed countries or developing countries. It is well known that China is the largest developing country in the world, and the per capita GDP ranks more than 100, however, the total GDP ranks the second due to the huge population amount, and just behind USA. Certainly, the total energy consumption amount is huge, and the big energy demand has brought a serious of environmental problems such as acid rain, water and soil pollution, and resource exhaustion, etc. Fortunately, China central government has regarded the serious question to realize the sustainable development in future. The renewable energy law has been established in 2005. Firstly, China's energy situation and existing environmental questions in past years is introduced in this paper. Secondly, the distribution and the application practice of different renewable energy were introduced. Then, China's renewable energy policy is detailed introduced in the following section. The next section discusses the existing questions. Based on these discussions, the development barriers and recommendations are introduced, respectively. © 2012 Elsevier Ltd.

Taiyuan University of Science and Technology | Date: 2016-05-27

The present invention discloses a method for rolling a metal composite plate/strip, comprising the following steps: 1) selecting a metal base plate and a metal cladding plate, cleaning the surfaces of the base plate and the cladding plate to be composited until the metal matrixes are exposed; 2) sequentially laminating the base plate and the cladding plate to obtain a composite plate slab; 3) rolling the composite plate slab through a composite rough rolling mill having a corrugated roll to obtain a composite plate having a corrugated mating surface on its composite surface; and 4) flattening the composite plate having a complete corrugated cladding plate by a composite finish rolling mill to a desirable thickness to obtain a composite plate/strip.

Taiyuan University of Science and Technology | Date: 2016-05-27

A method for preparing a metal composite plate/strip by rolling, comprises the following steps: 1) respectively rolling the composite surfaces of a base plate and a cladding plate to obtain the base plate corrugation and the cladding plate corrugation for mating with each other; 2) cleaning the composite surfaces of the base plate and the cladding plate to expose the metal matrixes; 3) sequentially laminating the base plate and the cladding plate so that the base plate corrugation on the base plate and cladding plate corrugation on the cladding plate mate with each other, compacting, and performing welding sealing treatment to obtain a composite plate slab; 4) rolling the qualified composite plate after inspection by using a compositing machine to a desirable thickness, to obtain a composite plate/strip.

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