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Qingdao, China

Han Y.,Qingdao Binhai University
Applied Mechanics and Materials | Year: 2014

Design method of hydraulic system of full hybrid transmission was analyzed. At first, oil volume flow and pressure requirement was confirmed according to the vehicle control strategy. Mechanical gear pump and electric pump were used to supply oil flow for all driving modes. Self-adapted pressure regulation circuit was designed to supply high pressure oil for brake engagement. Structure dimension of valves and cooling orifices was designed by theoretical calculation. Cooling flow can be distributed proportionally among electric motors and planetary gears. © (2014) Trans Tech Publications, Switzerland.

Weng F.,Shandong University | Yu H.,Shandong University | Chen C.,Shandong University | Dai J.,Shandong University | Dai J.,Qingdao Binhai University
Materials and Design | Year: 2015

Metal matrix composite (MMC) coatings were fabricated on Ti-6Al-4V titanium alloy by laser cladding. Co42 self-fluxing powder, B4C, SiC and Y2O3 were employed as the cladding materials. Microstructures and the wear properties of the different composite coatings were investigated comparatively. Results showed that the laser cladding coatings were mainly reinforced by CoTi, CoTi2, NiTi, TiC, TiB2, TiB, Cr7C3 and Ti5Si3. The micro-hardness of the cladding coatings were equivalent to 3-4 times the Ti-6Al-4V substrate. Laser cladding coating exhibiting outstanding wear resistance was fabricated with the addition of 20wt.% B4C, 7wt.% SiC and 1wt.% Y2O3. The wear resistance was enhanced by over 10 times compared with the substrate. However, with more SiC addition (14wt.%), a higher micro-hardness was obtained together with poor wear resistance. The wear mechanism of the coatings was discussed by referring to the microstructures and the wear morphologies. © 2015 Elsevier Ltd.

Huang W.,Qingdao Binhai University
Applied Mechanics and Materials | Year: 2013

The continuous automatic CNC lathe processing completed all turning process, should pay attention to choose rational cutting parameter, cutting tool, the reasonable choice selecting fixture, determine the processing line, processing route and machining allowance, fixture installation points, etc. And from change knife complement ensure dimensional accuracy, semi-finishing elimination of the influence of screw clearance to ensure dimensional accuracy was studied considering control dimension precision techniques. © (2013) Trans Tech Publications, Switzerland.

Zhi H.-Y.,China University of Petroleum - East China | Chang H.,Qingdao Binhai University
Chinese Physics B | Year: 2013

We study the Painlevé property of the (1+1)-dimensional equations arising from the symmetry reduction for the (2+1)-dimensional ones. Firstly, we derive the similarity reduction of the (2+1)-dimensional potential Calogero - Bogoyavlenskii - Schiff (CBS) equation and Konopelchenko - Dubrovsky (KD) equations with the optimal system of the admitted one-dimensional subalgebras. Secondly, by analyzing the reduced CBS, KD, and Burgers equations with Painlevé test, respectively, we find both the Painlevé integrability, and the number and location of resonance points are invariant, if the similarity variables include all of the independent variables. © 2013 Chinese Physical Society and IOP Publishing Ltd.

Chen L.G.,Qingdao Binhai University
Applied Mechanics and Materials | Year: 2014

To solve the effect that the multi threading task can be achieved by the TFT of color screen, we adopt MSP430F5438 as the main controller, the main equipment of its hardware system was built by the TFT of touch screen, and the task driving function was completed by using buttons and wireless communication module and other peripherals. And we have developed the application program based on UC/OS operating system utility with the kernel structure and characteristics of UC/OS. It can be realized these function, such as digital tube display, TFT display task, multi-tasking, wireless communication, the task driving system, touch screen and low power verification task. The experimental results show that it completely meets the desired design goals, it works reliable and stable. © (2014) Trans Tech Publications, Switzerland.

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