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Kou Z.,Beijing Research Institute of Chemical Defense | Fu N.,Weifang Engineering Vocational College | Men J.,Beijing Research Institute of Chemical Defense
2014 IEEE Chinese Guidance, Navigation and Control Conference, CGNCC 2014 | Year: 2015

Rocket assisted torpedo aerial trajectory is analyzed briefly, and math model of rocket assisted torpedo aerial trajectory is constructed, includes non-torpedo parachute trajectory and torpedo parachute trajectory. According to the model, trajectory is simulated, and several tactics polynomials are achieved. The method and the result provide an efficacious guarantee for the operational employment of rocket assisted torpedo. © 2014 IEEE. Source


Feiyan L.,Zhejiang University of Technology | Hailiang L.,Weifang Engineering Vocational College
Sensors and Transducers | Year: 2013

In this paper, we firstly provide a brief introduction on the research status and progress of the thermomechanical coupled properties and the actual work process of a wet clutch; we adopt specific research methods to analyze the friction structure and material properties, moreover, appropriate analysis will be made for the working condition analysis, stress features, the causes and factors of thermo-mechanical coupled, and constructing dynamics model under transient conditions. We also research the principles and processes for solving coupled stress, which enable us to obtain the simulation analysis model (Analysis steps, Boundary conditions, Contact algorithm, load, Mesh, Quality scaling factor) based on ABAQUS software. We also further analyze the thermo-mechanical coupled stress and get results from the temperature field, stress field, integrated displacement, axial stress distribution of the dual steel plate and friction plate. At last, we use the results to compare and validate the results of indirect method (ANSYS method), which provides the necessary theoretical basis and guidance for subsequent simulation. © 2013 IFSA. Source


Ma Y.,Weifang Engineering Vocational College | Wu M.,Shandong Transport Vocational College
Advanced Materials Research | Year: 2012

Cutting force measurement system by force measurement instrument, general data collection system and PC of three parts. The size of the cutting force general use have experimental results set up experience formula. Introduces two kinds of accurate measurement method of cutting force. Choose DEWESoft data collection and analysis system software as research means of cutting force. Through technical analysis and cutting force measurement technology development direction was predicted. © (2012) Trans Tech Publications, Switzerland. Source


Fan X.-P.,Chinese Institute of Scientific and Technical Information | Dou J.-Z.,Weifang Engineering Vocational College | Li J.,Chinese Institute of Scientific and Technical Information | Guo R.-P.,Chinese Institute of Scientific and Technical Information
Gongneng Cailiao/Journal of Functional Materials | Year: 2012

The research progress of military novel absorbing materials patent technologies was summarized, including active absorbing materials, chiral absorbing materials, conducting polymer materials and foam absorbing materials. The patent numbers, application nation, assignee of novel absorbing materials were listed, and corresponding patent's features or advantages, preparation method and potential military application were introduced emphatically. Some views on research of novel absorbing materials in our country were presented. Source


Gong S.,Central China Normal University | Lin Y.,Central China Normal University | Ge D.,Weifang Engineering Vocational College
Acta Geographica Sinica | Year: 2013

Based on historical documents of urban evolution, this paper makes a macro-analysis of the spatial-temporal evolution of the city-river relationships in the Three Gorges Area during the period 314BC-AD2013. The conclusions can be drawn as follows. From temporal evolution, in the stage from the Warring States to the Western Han Dynasty (475BC-AD8), cities in the Three Gorges Area grew slowly along the Yangtze River Mainstream; in the period from the Eastern Han to Sui and Tang dynasties (25-906), cities there spread rapidly from the Yangtze River Mainstream to its tributaries; in the epoch from the Song through Yuan and Ming to Qing dynasties (960-1911), cities there consolidated their distribution mainly along the Yangtze River Mainstream; and since then, from 1912 to 2013, cities there increased aggregately around central districts of core cities of both Chongqing and Yichang; therefore the Tang Dynasty (618-906) was the turning point of urban evolution of the Three Gorges Area, while the Ming and Qing dynasties (1368-1911) were the shaping stage of urban pattern, and contemporary era (1912-2013) is the polarization phase of the core cities. In terms of the spatial distribution, according to the site of cities, a total of 61 cities at the county level emerged in the Three Gorges Area during the past 2300 years, of which, 71% were distributed along the Yangtze River Mainstream, 73% on the junction of rivers, and 82% in the valley below an altitude of 300 m. Moreover, the evolution of cities in a small watershed usually tended to spread from downstream to upstream of the river. As a whole, the urban evolution in this area reflects the fact that a region is developed generally based on natural conditions, such as from lower to higher altitude and from downstream to upstream. Source

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