Gas Turbine engine is the world's most advanced large equipment, at the same time maintain a very high price. It is the final front of the protection, thus it is very important. JingNenggaoan gas heating pant use Seimens SGT5-4000F gas turbine. As a typical model of Level F gas turbine, continued with...

In order to extract the fault characteristic from vibration signal of a rolling bearing with variable rotate speed, the order cepstrum analysis approach is proposed in this paper. In this approach, the rotate speed signal is measured by optical-electricity transducer, the angular domain signal is obtained...

We report on a simulation of interior flow field in launch box with shock wave-opening technology. A three-dimensional model of the launch box has been established to study the process of shock wave forming and transmitting. The simulation of model was calculated with unsteady standard model. The whole...

In order to research the impact on the surrounding environment of the high temperature and high pressure jet flow produced in the process of missile vertical launching with jet vane, the structured grids was built, and the computational fluid dynamic model was used to simulate the launching vehicle jet...

The deformation and failure of overlying strata in mined out aera was produced by the traditional caving mining, and the distribution pattern of "three zones" was formed. In which the height of water flowing fractured zone is an important parameter for safe and efficient mining of "three down" coal seam....

Hydrocyclone separation technology as a kind of effective oil water separation technology, has been applied in the oil industry. The paper proposes numerical simulation of computational fluid dynamics which combine Reynolds stress model and Euler multi-phase model together, and discusses the operating...

With improvement of computer technology and digital technology level, the superiority of numerical control technology application in machine manufacturing gradually stands out. Numerical control technology optimizes equipment effect and quality, promotes market competitiveness of enterprises and drives...

Basketball is a charming sport. Countless fans in the world are crazy about it. It is also one of main events of the largest sport contest - Olympic Games. The research shows in large-scale basketball competition, strength and technical level of each high-level team do not differ a lot. Competition result...

This study is based on the "Shadow" dexterous hand, whose mechanical structure are studied, and the displacement, velocity, acceleration and static force of dexterous hand joints are researched. Then the kinematics model is established by using D-H parameter method, and the forward and inverse kinematics...

Autonomous emergency braking system (AEBS) is important active safety technology, which aims to avoid collision or reduce collisions by automatic braking, has become a hot research topic in recent years. However, Modeling and simulation research on big bus is relatively limited, not systematic introduction....

The article introduced the knowledge about how to select the hydraulic support type. Aiming at the characteristics of thin coal seam in Huang Ling No.1 Coal Mine, by the use of empirical estimation method and numerical modeling method, the hydraulic support with large mining height was studied and selected....

This paper illustrates the basic characteristics of the fluid flow inside the piston engine, the condition of clear piston engine full flow field research premise, puts forward a available for study of the turbulent flow field model, and based on this model, this paper expounds the basic methods of the...

The UAV found rapidly, it has the characteristics of manned aircraft do not have, such as cost, no risk of human life, and increasing people's attention. Unmanned aerial vehicle aerodynamic design, it affects the entire airplane aerodynamic characteristics and flight performance, aircraft preliminary...

In continuous casting, continuous casting lines constitute a single continuous casting machine is generally referred segment, In general, it is divided into actuate segment (or curved section), straightening section, horizontal section and so on. According to different billet can be divided into plate...

a sprout layer-rack aeroponic cultivation device has been designed to solve the problems of low space utilization rate, large consumption of irrigation water, unbalanced growth amount and low automaticity in sprout production. SolidWorks has been employed to build 3D models for spare parts and the overall...

An efficacy evaluation model of a certain missile technical support system is established by adopting ADC method. Both important influencing factors and evaluation index of system effectiveness are determined via analyzing the missile technical support process. Simulation results show that the proposed...

With the continuous development of economic and society, there is a new momentum in the development of modern manufacturing, marked by more complicated production tasks and high accuracy production requirements. Many times in order to complete the complex production task, we need to put multiple mechanical...

Along with the ongoing society development, people gradually gets a higher demand for daily life quality, which means a vital function for mechanical processing industry in its mechanism and technology development. This paper mainly talks about the development research on mechanism and technology in...

Movement features in high speed mechanical system are showing up quickly aside with the rapid society development. It can not only improve the mechanical movement efficiency, but also determines the whole real-time visual surveillance outcomes. This paper aims at analyzing these features and coming up...

This paper presents a dynamic orchard vehicle model in the SimMechanics simulation environment of Matlab. The model's function is to replace physical vehicles during different experiments in rollover and pitch research. Two simplified linear dynamic models are developed to analyze the force situation...

In recent years, the development of avionics system is rapid, and many advanced technologies have been adopted, that improve the performance of avionics system and increase the complexity of system structure.Therefore, it is urgent to optimize the avionics system by studying the avionics network topology...

The capacity expansion project of Yahu landfill site in Pingshan New District of Shenzhen City is based on the old landfill site. It will inevitably cause the inhomogeneity of landfill foundation settlement because of the different new landfill height and the complicated geological conditions, and then...

The sandwich plate with folded core is a new type of sandwich structure. It has good design ability and has gained interest in the aerospace industry as a promising sandwich core structure. In this paper, energy absorption characters of M-type folded core are studied. Finite element models are set up...

The productivity of converters is almost increased with oxygen supply intensity, recently, the amount of large and medium conerters has been increased largely in china. to the converter of 300 tons, vaporization cooling system is Key equipment for stable operation of converter production, Once some problem...

The active vibration isolation of the engine in the range of broad frequency can realize by the controllable damping characteristics of the magneto rheological damper. This paper firstly discusses the principle of the experiment and then explores the equipment and process of the experiment of vibration...

With the development of science and technology, coupled with the continuous lowering of the mass of the car itself, the problems of noise vibration harshness (NVH) caused by engine vibration attracted more people's attention. This paper firstly clarifies the concept and principle of magneto rheological...

Diagnostics of the rotating machinery can identify potential failure at its early stage and reduce severe machine damage and costly machine downtime. Rub-impact is common faults in rotating machinery and results in impact and friction between rotor and stator. The vibration signals due to impact and...

Aiming at difficulty of weak characteristics of the nonlinear and low signal-to-noise ratio signals measured from diesel engine, a novel method combining second generation wavelet denoising and Hilbert Huang Transform(HHT) is proposed, and is used for feature extraction and condition evaluation of vibration...

On the basis of previous research, the nonlinear finite element analysis of the light frame shear wall is made with the elastic-plastic behavior of wood and shear failure of connecting part. The nonlinear parametric analysis is carried out for lateral resistant performance of the light frame shear wall....

With awareness of environmental protection is increasing, the government regulations on noise limits have become increasingly stringent, people's requirement for the comfort of general machinery is increasing. The NVH performance of general machinery will be the main trend of the future general machinery...

Our first-principles calculations based on density functional theory predicted a new path for the formation of sp-ferromagnetic states: anion interstitials. The fluorine interstitials in MgO were found to be spin polarized and are more stable in the ferromagnetic state. This observation is attributed...