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The Static and Dynamic Analysis of Honeycomb Sandwich Shells for Linearity and Nonlinearity
In this paper, the geometrical nonlinearity (large displacement/large rotation) and material nonlinear dynamic analysis for honeycomb sandwich shells with rigid-body displacement, are presented respectively. It includes computational modelli....
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A Calculation Analysis for Structural Integrity and Reliability of Solid Rocket Motor Grain
Since long term, the reliability problem of a solid rocket motor has been highly considered, and especially probability design has already become an absolutely necessary tache during designing and manufacturing solid rocket motors. A solid r....
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Study on Characteristics of Cryogenic Propellant in Pipeline Transportation System
Two kinds characteristics of cryogenic propellants in the pipeline transportation system have been studied . One is the study on the choice of pressurization gas and the improvement of the pressurization apparatus in the rocket's liquid prop....
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Radio Occultation Technique for Sounding the Earth's Atmosphere
Radio occultation technique for the Earth's atmospheric profiling, a new application of the Global Navigation Satellite Systems, is one of the most advanced space exploring techniques in the 21st century. This technique can measure the profi....
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Research on the Designment of Chinese Space VLBI System and Computation Simulation
The unique radio astronomical technique of Space Very Long Baseline Interferometry (SVLBI) is an extension of the ground-based VLBI into the space. It has some important potential applications in geodesy and geodynamics, including the defini....
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Research on Digital Base-band Converter in VLBI Data Acquisition Terminal
With the further development on the Astronomy and navigation of interplanetary spacecraft, the incremental improvements are expected on the VLBI that is real-time, high sensitivity, reliability and more frequency coverage. As one of the main....
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Study on Turbulent Flow and Heat Transfer in Internal Cooling Passage with Helix-alike Fins
There is a growing tendency that the temperature at the inlet of gas turbine becomes higher and higher to achieve higher thermal efficiency and higher power density. This tendency makes the lifetime expectancy of blade reduced significantly.....
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Fatigue Reliability Analysis of Aeroengine Low Pressure Compressor Disk
Compressor disk is a main part of aeroengine, and is one critical part of aeroengine. The generally fault reasons of disk are low cycle fatigue, oscillation, flexuosity and wriggle etc. Along with the increasing of push weight rate of modern....
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Study on Crucial Technologies of Dynamically Tuned Gyroscope
Dynamically Tuned Gyro (DTG) is a kind of 2-DOF (degree of freedom) inertial sensor with a specially flexible joint. Because of its advantages of simple structure, small size and low cost, DTG is widely used in military and civil fields, suc....
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Research on Route Planning for Air Vehicles
As one of the key issues of the automatic navigation of air vehicles, route planning isan important research field of robotics. It has been attracting a great attention boththeoretically and practically. According to various mission scenario....
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Research of Automated Ultrasonic Non-Destructive Test of Large Complex Geometry Composite Structures
In aeronautic industry, more efficient and accuracy non-destructive test methods (NDT) are required to critical parts test. Different techniques are nowadays used, but one of methods most suitable to automated test is ultrasonic testing. Whe....
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Large Deformation Consolidation Stochastic Finite Element Analyse of Soft-clay Road Embankment
Based on the large deformation theory of continuum material, Biot's consolidation theory and Neumann stochastic FEM, the large deformation consolidation Neumann stochastic FEM (LDCNSFEM) theory had established. A program of LDCNSFEM was desi....
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Evaluation of Asphalt Overlays Anti-cracking System over Existing Cracked Asphalt Pavements
The overlay design procedures which are available nowadays are based on reducing the stresses and strains in the existing pavements. However, If the pavement shows too much cracking, these cracks rapidly make their way through the new overla....
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Study on Variability of Asphalt Pavement Construction Quality
Asphalt pavement has become the major type of pavement structure for high-grade highway in our country because of its good mechanics strength, comfortable traveling and easy to mechanization construction. At present the highway traffic is in....
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Study on Machinery and Key Technologies of Pressing Powder for Initiating Explosive Device
The technology of initiating explosive device(IED) is one of the key technologies in aerospace engineering. The IED is the important spare part and is applied very extensively in carrier rocket and guided missiles. The quality problem of any....
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The Mechanics Behavior Research on the Wheel of Locomotive Added Coupling Ring
The railage plays very important role in the traffic transport of our country, and has great effect on our country economy. Because the assembly locomotive wheel which is widely used in our country may cause the digression and subversion acc....
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Study and Applications on Key Technology of Piston Reliability in Heavy Freight Locomotive Diesel Eng
The piston is the pumping heart of internal combustion engine. Its reliability and service life are directly related to the locomotive diesel engine's efficiency, reliability and life expectancy, so that improving reliability of composite pi....
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The Theory and Analysis on Comprehensive Transportation System
Comprehensive transportation system is a complex dynamic system which consists of next four parts: transportation network equipments, conveyances, passenger and freight traffic flow, organizer administer of various transportation mode. It is....
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Model Analyses of Urban Traffic Demand and Its Supply Effects
Firstly, the coordination between land-use and urban transport system is reviewed and discussed in this paper. It is the private transport system and the public transport system that constitute urban transport system. After analyzing the dif....
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Study on Effect of Inorganic-Material on SBS Modified Asphalt Stability
In order to adapt current needs of the rapid growth of traffic industry and economic development, the study of improving the performance of the ordinary paving asphalt attracts researcher's attention. Modified asphalt production and investig....
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Study on the Protection Skill of Zoology and Environment Aimed at Slope in the Collapse Loess Area
As the economic development of our country enters into the new phase, the zoology demolish and the environment pollution have been the fatal public problem. The idea of the protection of zoology environment gradually is gained ground, and go....
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Study on Theories and Methods for the Optimization Designation to Highway's Cutting High Loess Slope
Based on plentiful productive practice of highway engineering in the loess area in our country and a great deal of high loess slopes instances as well as their research results from domestic and foreign, a series of new theories and methods....
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Study on the Risk Evaluation of Rainfall Drainage System of Mountainous Highway
Annually many rainfall disasters influenced on highway transportations and social economy during rain seasons in China. In order to decrease these rainfall disasters losses, a comprehensive strategic active precaution has been taken in proce....
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Research on Characteristics Distinguishing and Controlling Means of the Segregation in Asphalt Mixtur
Bituminous pavement has become the primary type of pavement structure for highway in our country. The segregation of asphalt mixture during the construction is one of the main reasons for the damage in the early stage of the asphalt pavement....
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Research on Temperature Field of Embankment and Pavement and Temperature in Index of Pavement Working
Desert area lies in the Chinese north, nature environment is worse, summer is very hot that the highest soil surface temperature gets about 70℃, and winter is very cold that surface temperature drops under -30℃. Pavement brings about mac....
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Study on Management System of Expr Essway Pavements Maintenance
This paper aims at the scientific ways and means of management and its establishment, which is very important during the course of road maintenance. Based on the analysis of the production on hand, that is pavement management system (PMS), a....
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The Research of Mechanism on the Asphalt Structure and High Polymer Modified Asphalt
At present, to improve the performance and extend service life of asphalt pavement and decrease the damage caused by all kinds of environmental change, road researchers are world widely interested to produce high quality modified asphalt and....
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Study on Evaluation Methods of Ground Bearing Capacity for Highway Embankment in Loess Area
Owing to the complicated topography in loess area, there are more and more high fills and deep cuts in high-grade highways of mountain area, and some embankments up to dozens of meter are nothing new now. It s obviously that the ground of hi....
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Characteristics and Mechanism of Styrene Butadiene Styrene Polymer Modified Asphalt
Base asphalt performance evaluation methods or their partially modified ones have been directly adopted by polymer modified asphalt. Whether it is suitable to SBS modified asphalt is one of the hot research points all over the world. This pa....
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Study on Crack Resistance Property about Bituminous Pavement on the Cement and Flyash Stabilized Crus
As a new type of semi-rigid basis, the roadbase of cement and fly- ash stabilized crushed-stones has many characteristics, such as early-strengthening, high strength, less cracks and early-opening to traffic. Besides, it also grows much in p....