There are many different kinds of machine element, with professional development of industrial production, only a few machine elements needed by factories are for their own production, most are needed to be purchased. Using purchase quotation system for machine element is an effective mean to ensure...

Carrying out mechanical equipment operation management can improve the economic efficiency for enterprises, prevent accidents, ensure production safety, and promote the reform of machinery and equipment maintenance system. Using computer system to manage is the necessary requirements for the information...

An intelligent metal linear expansion experimental instrument scheme brings for the existed problems aimed at measurement equipment of metal linear expansion coefficient. System by the processing core STC89C52RC adopts Holzer displacement sensor SS495A to measure displacement of metal bar expansion....

Base on measuring principle of barycenter, the authors analyzed influencing factors of barycenter and measured barycenter of one Dura-axle vehicle according to GB/T 12538-2003. The result showed that the height value of barycenter is different when lifting vehicle for smaller angle, so when measuring...

This paper introduces the noise transfer function theory overview, After improvement proposed by the suspension of dynamic stiffness to reduce interior noise opinions, In an example of a compact car, We found the front peak problem by Accelerated conditions experimental test , Using the noise transfer...

Through the analysis of the water temperature distribution affected by the shape, volume, temperature of the tub and the person, this model finds the reason why it is so difficult to keep an evenly expecting temperature during bathing time. Furthermore, according to the water temperature distribution,...

Through the establishment of water on the surface of the heat loss and the bathtub wall heat loss of the two models to analysis heat bath total loss, as the foundation to find a most suitable strategy the person in the bathtub can adopt. Model of heat loss through water surface discuss the heat loss...

In recent years, characteristic of rocky pressure machines is developing from low-pressure and static to heavy-duty and revolving. In order to make the pressure chamber of rocky press rotate precisely, this paper puts forward to introduce hydraulic cylinder as a support of the workbench, thus satisfying...

Comfort is an important performance index of modern cars, and thus car production enterprises are making every effort to improve the comfort level of cabs. The cab suspension system plays a key role in obstructing the vibration passed from the chassis to the cab. A simulated analysis on the car cab suspension...

Numerical simulation has significant advantage in analyzing the interaction between rigid wheel and lunar soil simulants and designing the lunar vehicle wheel under complex circumstances. The computer aided design software CATIA and 3D Discrete Element Method simulation software PFC3D were combined by...

For a water-cooled engine, radiator performance has a direct impact on automobile engine heat dissipation effect, influence the automobile's power performance, economy and reliability. Based on the 6DL engine high temperature problems are investigated, analyzed the reasons of high temperature of the...

With the rapid development of science and technology, the application of the computer is more and more widely, not only brought great convenience to the life, at the same time also prompted some emerging things arises at the historic moment, such as: warp knitted seamless garment, it is the use of computer-aided...

In recent years, with the rapid development of creative industry, fashion bags has become one of the important element in the accessories. Especially for women dress collocation, the choice of luggage is indispensable link. Luggage industry market development prospect of huge potential, bags designer...

In collecting on the basis of traditional batiks patterns, the traditional batiks patterns are classified and summarized the composition of traditional batiks patterns in the form of law, law of color, pattern characteristics, cultural connotation, refining traditional batik pattern elements, will be...

In this paper, the information of Internet and enterprise and customer information exchange communication bridge tool, study of the key components of the automobile manufacture of manufacturing applications, and stamping die design and manufacturing, from the six case analysis, mold manufacturing, cost...

Rigid rapier loom uses rigid rapier to grip the shuttle and do the reciprocating movement to realize weft insertion. To grip and release the shuttle, a complicated mechanism is used. But usually the stability of the mechanism is not good and the installation is complex. According to simulation and experiment,...

The warp tension, which is the let-off mechanism of carbon fiber multilayer loom, for the study object, the article expounds the composition and distribution of tension sensor, and analysis the detection principle of warp tension, thus design a detection scheme of warp tension. In order to solve the...

This paper studies the helical gears in the gear box of cold rolling mill in a steel, using software SolidWorks to make one pair of meshing helical gears a solid model, and import the entity model into ADAMS to creat a virtual prototype model, using IMPACT function to define the contact between gears,...

The machine output power smoothing has an important significance to improve the efficiency and quality of machining. With the secondary development of cutting geometry simulation software, we have got the geometry cutting parameters, carried out a physical simulation of the whole cutting processing and...

With the increasingly severe environmental and energy issues, the application of urban electric buses is more popular, but the battery reserve capacity has restricted the popularity of electric vehicles. Regenerative braking energy recovery system can reduce the energy consumption of the electric vehicle,...

Three kinds of power curve are analyzed aimed at the sense of strength and steering portability. Thus, we put forward a new design principle based on the existing research. The assist characteristic range is divided into four kinds according to the vehicle speed and steering wheel torque. The simulation...

With the development of space technology and mature, four rotor aircraft with its low cost, high performance, unique structure and flight mode and other characteristics, are widely used in military and civil fields. According to the basic characteristics of four rotor aircraft prototype and flight characteristics,...

With the development of large-scale wind turbine, the limitation of the classical aerodynamic characteristics of wind turbine research methods has become more sophisticated, and the improvement of CFD numerical simulation technology has provided a new research method for wind turbine aerodynamic characteristics....

This paper proposes a 4-layer device virtualization system framework based on multi peer nodes. First, the different layers of deployment and the operation processes of the system are discussed, then the resource management and the information flow are described. Finally, the interface and task assignment...

Ground mechanics is the study of off-road driving machine interaction with the ground in a mechanical discipline, vehicle dynamics and soil mechanics is a goalkeeper of combining the interdisciplinary, involving vehicles, ground and its interaction research of dynamics, etc. Mechanical parameters test...

Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM) and X-Ray Diffraction(XRD)were employed to investigate the influence of heat treatment conditions on microstructure and mechanical properties of a new high strength TB17 titanium alloy at aging temperature from 530øC to 620øC....

The linear model of valveless electro-hydraulic servo steering device neglects the nonlinear factors, especially the factors of the control subsystem, so the quantitative static and dynamic characteristics of the actual system cannot be evaluated accurately. Aiming at the problem, the steering device...

In order to study the transition of material properties under the environment of high temperature and vacuum, a micro vacuum heating observation equipment was designed. The vacuum system can create the vacuum environment. And the heating system can create the high temperature environment. This equipment...

Constraint-variable correlation is the most important coupling correlation in unit commitment problem. Reasonable arrangements for the correlation will simplify the model complexity, and reduce the calculation time. And minimum on/off time constraint is one of the most complicated time coupling constraints....

This article is based on the subsoiler as the research object. 3D model is established using large finite element analysis software analyze and optimize the structure afterwards. The structure and thickness of the subsoiler have been optimized and the feature parameters have been changed from different...

Linear acoustics is adopted to analyze the influence on the entry diameter of the gas inlet orifice on the acoustic damping of the injector. The impedance tube method is used to assess quantitatively damping capacity of entry diameter of the gas inlet in order to find the best structure parameter of...

The defect detection of plastic gear is difficult because of its small size, so a method based on machine vision is proposed to inspect plastic gear accurately and quickly. Digital image of plastic gear is collected by CCD camera, and then the image is preprocessed to generate single pixel edge of gear....

Odometer lever arm effect on strapdown inertia navigation system initial alignment with odometer is studied in this paper. This paper presents an error compensation method of odometer lever arm. In this method, the difference between output velocity by odometer and velocity output by SINS is taken as...

In order to improve the traditional pneumatic rubber tire performance of puncture-proof, explosion prevention and environment adaptability, a main-auxiliary spring structure wheel was propesed. The new wheel composed base on metal helical spring mutual woven and interwined. By analyzed the system structure,combined...

In order to get a further reduction on pressure loss of a reactive muffler, the interior flow field of the muffler and the generation mechanism of pressure loss are investigated by the CFD method. Then, the influences of the insert tube length on the acoustic and aerodynamic performance of the expansion...

In the complex components of aircraft roller bearing forming process, it is influenced by the surface mesh inducing factors, resulting in processing accuracy is not good, the error is large. An optimal roller bearing forming machining cutting method is proposed based on the internal tooth interference...

Aimed at the problem of engineering vehicle hydraulic mechanical transmission system efficiency is low.Thispaper mainly study of the engineering vehicle automatic transmission shift schedule.Through the artificial set the minimum numerical efficiency,this paper obtained the automatic transmission shift...

We take heat transfer between water and air and heat dissipation capacity of bathtubs into consideration and discuss the influence of bathtub shapes on temperature. We keep the temperature of bathtub in 39 degrees Celsius.We assume that the bathtub's capacity is the same and try to find the best shape...

This paper proposed a basic model and an optimized model to obtain the temperature field of water in a bathtub with and without bubbles. Firstly, the basic heat transfer model is established based on the three-dimensional N-S equations, the heat transfer differential equations and cuboid boundary conditions....

The engraving process of projectile is a very complicated mechanics process,In this paper, the artillery projectile engraving tube process is the research object, using the WDW-T200 microcomputer control electronic universal tension and compression testing machine of projectile and barrel samples of...

RV reducer is an important function part of industrial robot joints. The cycloid gear measuring problem is the key part of high precision RV reducer manufacturing. A brief introduction to the forming principle and formulas of RV reducer cycloid tooth contour. A new method for measuring the contour accuracy...

This paper uses a queuing model of multi-server system to offer optimal airport wheelchair service which minimizes the cost and offers service of high quality. It addresses the performance of airport wheelchair service associated with the waiting time of passengers who need the service. According to...

Water hammer phenomenon often occurs in the high-rise buildings air conditioning chilled water system, and cause enormous damage. With the help of Flowmaster platform, network model was built to simulate water hammer with different pipeline models, and the simulation results show that the water hammer...

The multilayer U-shaped bellows' strenth and axial stiffness are studied by ANSYS finite element analysis. The plane axisymmetric model of multilayer bellows is established, and the material nonlinear, geometric nonlinearity and contact between the layers of multilayer bellows is considered, obtained...

Cavitation effect is one of the main mechanisms of ultrasonic descaling. Through the mixture model and the cavitation model in Fluent, the ultrasonic cavitation field in the pipe is simulated. The simulated distributions of pressure field and variation of vapor are analyzed and discussed. This study...

Integral impeller is the key component of aeroengine, which reflects the development level of a country's equipment manufacturing industry. The function, technical requirements and processing difficulty were introduced in the paper. The machining processes of a axial-flow impeller was described. The...

In snubbing service, the spherical BOP plays a vital role in shut-in well and running and pulling tubing. The shell and rubber core are the crucial components of spherical BOP, taking the three-dimensional software SolidWorks as a platform, these two components 3D model have been established, and the...

Gradually expanding gap in the outlet of the Roots blower can effectively reduce the backflow impact and the noise of the blower. The working principle for the Roots blower with the gradually expanding gap is investigated in this paper. And the mathematical modelling for backflow is proposed. Numerical...

According to the laser cutter larch, this study has determined the reasonable process parameters such as focal length, light intensity, and optimized laser processing technology parameters to provide test methods. Firstly, for the cutting seam state analysis the precautions of software settings have...

Weaponry model architecture oriented to composition and reuse can improve modeling efficiency and ensure consistency of models, for developers can build weapon models by model composition and reuse. However, there are massive models in the field of military equipment, and the combination and inheritance...

Based on the principle of hydraulic mechanical stepless transmission is tracked vehicle hydraulic mechanical differential steering system can effectively improve the vehicle's steering can win, is has good prospects for development of a tracked vehicle steering model. Papers on tracked vehicle and its...

This paper presents the unified mathematical model well applicable for the analysis and design of the planar and spatial cam mechanisms of all categories in terms of the differential geometry and meshing principle, exploring the interrelation of the various cam mechanisms. The general-purpose CAD/CAM...

Micro Wire Electrical Discharge Machining (Micro-WEDM) surface consists of many approximate spherical peaks and craters with interphase distribution. According to the micro- WEDM mechanism, the surface micro-topography is simulated by using ANSYS, and the mathematical models about single crater and multi-crater...

The static bill of material data and dynamic bill of process data need to be integrated during manufacturing process of complex product, in order to wholly control the workpiece of workshop and systematically consider material requirements planning and enterprise resource planning. This paper constructed...

To explore degradation law and failure mechanisms of AlGaN/GaN HEMT under different temperature conditions, the step-temperature stress experiments are carried out. The results show that the drain-source current decreases with the aging time when the junction temperature range from 139 to 200 ; while...

In this paper, a three-dimensional finite element model is developed based on the joints on standard sections of tower crane QTZ5510. The validity of this finite element model is verified through the contrast of analytical results calculated by Yamamoto Method and simulated ones under the action of static...

The missile-based redundant SINS (strap-down inertial navigation system) output the measurement data by using pulse quantization. Pulse quantization can disorganize the errors in the original measurement signal, cause an instantaneous drift of 50 degree/hour, and thus brings about great difficulty to...

In this paper, the physical mechanism of the cryogenic superfluid gyroscope based on AC Josephson effect are analyzed , meanwhile, the implementation of the cryogenic superfluid gyroscope was brought up and the advantage of the sensitivity of the gyroscope is proved by theoretical derivation. A method...

With the rapid development of information technology, the production and management of the equipment towards to the direction based on digital, network and intelligent, which promote the revolution through the design instrumentalities, production process and testing technology. Nowadays, a new generation...

In order to achieve the efficient transplanting of corn pot seedling in the field, and to avoid the seedlings injuries result from separation between seedling and pot with traditional ways. A kind of seedling mechanism is designed which the main body is disc cutter, and the structure of the disc cutter...

The combination of increased strain rate and thermal softening of the workpiece at higher cutting speeds will cause the change of cutting force coefficients. In this paper, a vibration model for milling process, which can consider the variable cutting force coefficients (VCFC) with the spindle speed...