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Zhu L.F.,Changchun University of Science and Technology | Wang K.,Jilin University | Wang K.,Changchun Institute of Equipment and Process | Wu H.,Changchun Institute of Equipment and Process | And 2 more authors.
Applied Mechanics and Materials | Year: 2014

Based on the solid - liquid two-coupling theory, Use abrasive medium viscosity-temperature characteristics related to the mathematical model, using solid - liquid two-phase solution method Mixture models and standards k -e, turbulence model combining with common rail pipe hole as the research object, choose different initial temperatures and processing procedures, numerical analysis was carried out on the flow channel wall temperature and turbulent kinetic energy. Using numerical analysis software FLUENT Abrasive Flow Machining rail tube orifice structure was three-dimensional numerical analysis; obtain a steady-state pressure, dynamic pressure, velocity, turbulent kinetic energy image, to study Abrasive Flow Machining process provides a theoretical basis and technical support. © (2014) Trans Tech Publications, Switzerland. Source


Zhu L.F.,Changchun University of Science and Technology | Wang K.,Jilin University | Wang K.,Changchun Institute of Equipment and Process | Kang Z.,Jilin University | Li S.,Jilin University
Applied Mechanics and Materials | Year: 2014

The temperature control model of an intelligent sand casting and gas forming tester is introduced in this paper. The thermostatic fuzzy control of the tester is simulated by the fuzzy control kit in Matlab. The result of the simulation indicates that the control method of the research has a intelligentized degree, which is more precise than conventional control method. © (2014) Trans Tech Publications, Switzerland. Source


Wang J.-Y.,Chongqing University of Technology | Yang C.-H.,Jilin University | Hu X.-J.,Jilin University | Guo B.,Changchun Institute of Equipment and Process | Guo B.,Shaanxi University of Science and Technology
Proceedings - 2013 4th International Conference on Digital Manufacturing and Automation, ICDMA 2013 | Year: 2013

The aerodynamics characteristics of square Mira model were researched by simulation and wind tunnel test. The velocity distribution, pressure distribution, drag coefficient and the aerodynamic characteristics around model were achieved. With contras the results of simulation and wind tunnel test, it validated the veracity of simulation. Based on results, the back spoiler was added and the fixing angle was changed. The drag coefficient was achieved. The conclusions provide reference for how to reduce drag coefficient of SUV. © 2013 IEEE. Source


Wang T.,Beijing Institute of Technology | Xie L.J.,Beijing Institute of Technology | Wang X.B.,Beijing Institute of Technology | Jiao L.,Beijing Institute of Technology | And 3 more authors.
Procedia CIRP | Year: 2013

The surface quality of components produced through milling of particle reinforced aluminum matrix composites (PRAMCs) is one of the most important factors influencing their practical performance. Therefore, the increasing applications of PRAMCs necessitate an in-depth understanding of the variation law of surface integrity. This paper presents a systematic experimental research of high speed milling of Al/SiC/65p (65% volume fraction) by polycrystalline diamond tools (PCD). The influences of cutting parameters on surface roughness (Ra), surface residual stress (RS) and morphology of PRAMCs were investigated. In addition, the experiments on corresponding unreinforced matrix alloy Al 6063 were also carried out to analyze the influence of the present reinforcements on surface integrity. The results of full factorial experiment revealed that the most significant milling parameter for surface roughness was milling speed, followed by the interaction between feed rate and milling speed, then the feed rate. In terms of residual stress on the machined surface, axial depth of cut had the highest influences on surface residual stress, followed by milling speed and feed rate. The results of single-factor experiment demonstrated that surface roughness improved slightly with the decrease in the feed rate, while the effect of milling speed was negligible. Residual stress measured in feed direction by X-ray diffraction (XRD) indicated that the conditions of machined Al6063 surface were all tensile, while the conditions of Al/SiC/65p were compressive. Copyright © 2013 Elsevier B.V. Source


Wang K.,Jilin University | Wang K.,Changchun Institute of Equipment and Process | Sun W.C.,Jilin University | Nie F.M.,Changchun Institute of Equipment and Process | Wu Q.T.,Changchun Institute of Equipment and Process
Applied Mechanics and Materials | Year: 2014

The paper proposed the practical metal cutting process using FEM to simulate the traditional cutting process, the simulation and the analysis of the results are based on the support of DEFORM-3D finite element software, and the characteristic between Galerkin Algorithm and FEM analysis is also analyzed. Then the paper processed the modeling procedure for FEM using Lagrange and Euler algorithm, the simulation result is then compared to traditional ones and proved to be more efficient and with higher accuracy. © (2014) Trans Tech Publications, Switzerland. Source

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