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In order to overcome the manual mode of cases' joint investigation, improve the objectivity of joint investigation, and provide further alarm information, a modified self-organized map network was selected to realize joint investigation. The modifications were done mainly on the initial weight vector, the learnong rate, competition layer nodes' selection, and the neighborhood range. After simulating...
The correlative introduction and analysis of a kind of industrial field pressure measurement sensor is carried out in this paper by us. The principle of work and power supply circuit of pressure sensor is studied in detail. The constant current source power supply mode is adopted in this paper, which is very good for certainty of measurement. In order to go a further step to explore sensitivity situation...
The reliability problem and the thermal management problem of active embedded component into organic substrate becomes a bottleneck restricting development. On the one hand, these paper overviews the thermal management features of the technology, the modeling of the thermal management and the application of thermal methods. It does the cooling and the thermal stress simulation analysis for typical...
Safety for the occupants of the cab is a prime consideration for structure design on commercial vehicle. The cab shall be designed and attached to the vehicle in such way that in the event of collision exhibit a survival space for the occupants, meanwhile,the cab must remain attached to the chassis frame. The new more legal and strict safety test requirements are specified by proposal for ECE R29-03[1]...
In this paper, the excavation work of deep foundation pit for Qingdao subway is proposed. By construction numerical analysis, the characteristics of internal force of bracing system and soil horizontal displacement are obtained. Through these analyses, the law of horizontal displacement in ambient soil is obtained, and the measures considering the construction factors can be adopted for the support...
Numerical simulation of the structure of underground rock engineering stress and strain, analysis of structural stability of the method has been widely recognized. Here used a computer simulation based design bolting method, Application of finite difference software as the core UDEC computer program can easily simulate mining, excavation, tunnel support during the large deformation problem, you can...
As the interest on Network Virtualization continues to grow, so does the awareness of the many technical obstacles to transpose before the envisioned virtualized network environment may become a reality. A significant obstacle lies on the efficient assignment of virtual resources into physical ones. Performing the so-called mapping of a virtual network into a substrate network is a computationally...
Fracture mechanics theoretical modelling and Finite Element Method analysis of a pre-cracked 3-Point Bending Specimen (3PBS) have been conducted in this paper. Using the equivalent system of the specimen, fracture mechanical characteristics have been analyzed and the theoretical Dynamic Stress Intensity Factor (DSIF) is obtained later and used together with the Pairs theorem to analyze the fatigue...
The processes of pipe collapse under external pressure have be calculated and simulated by means of the ANSYS FEA. It introduces the destruction theory of the pipe and some formula by API, and analyses the factors such as geometries, pressure, and its properties, which affect the capability of the resistance to the pipe collapse. The relationship between strain and stress of pipe has been descried...
One-kilometer directional drilling rig is a head-type hydraulic rig, which can drill horizontal deep holes in coalseam with down-hole motor for gas drainage. To avoid the hole axis floating and the rig overturning, a stabilizer is designed for high stable ability in this paper. Stabilizer is subsequently modeled and simulated in four typical conditions where the drilling rod rotates. The result shows...
A one-dimensional simulation of an electrofusion welding process based on finite difference method using control volume discretization is presented. Usually simulations of this nature are implemented with finite elements using a package, such as ABAQUS, with time consuming iterative computer code. This simulation is able to predict temperature and stress histories as well as giving the gap closure...
The paper describes the engine valve-train mechanism's dynamic analysis method, and introduces how to make dynamic simulation of it, and then makes the conclusions from the simulation results. In the process of simulation, first engine valve-train mechanism is modeled by CATIA software, and then models are imported into ADAMS software, so as to simulate the movement of engine valve-train mechanism...
This paper presents how to proceed for CAD modeling and finite element simulation of elements that goes into plantar orthesis families. The research issue is to prototype different types of plantar orthesis families that could be adapted into the orthopedic shoes of some people with different problems of locomotion and/or stability, the aim being to ensure thereby a progressive correction of these...
In order to improve the backward present rescue technique for small-caliber deep well, a kind of rescue robot is studied, which can hold and grasp the fallen person tightly by using the stretching arm and clasp arm. The virtual prototype is designed to illustrate the rescue course. Considering the stretching arm of the robot bear the main weight during the rescue work, so we make the stress analyses...
Pipe plays an important role in the petrochemical industry. Developing pipe testing technique can avoid or decrease accidents and is an important guarantee for the safety service of pipe. In this paper, a method is presented to identify crack location and size, which is based on the finite element method (FEM) and model modification. Pipe structure is dispersed into a series of nested thin-walled...
For burying cable ploughs need to follow a certain path, big ploughs are towed by surface vessels with powerful propulsion systems, modeling is rather important. Firstly, based on Colomb's passive earth pressure theory, the analysis of effects of pore water, cavitation limit and grain crushing limit are carried out. Secondly, the mathematical model considering the force acting on the plough from the...
The in-situ detection of failures in microelectronic packages in an experiment is still a big challenge. The reliability of most packages will be qualified by measuring the electrical resistance of daisy chain structures. The moment of failure in the electrical sig-nals or the changes in the resistance are used for reliability or lifetime estimations. But the correlation of electrical resistance in...
In this paper, we present occupational stress diffusion model, which are significant for the research on simulation in Chinese teachers healthcare. Our approach is an agent-based simulation implemented by using AnyLogic 6 and MATLAB 7.0. Then virtual experiments are designed, and some results are concluded. The threshold value exists in organizational work control and occupational stress management...
FinFET device, the promise one of all candidates which may extend CMOS scaling to 10nm and beyond, has attracted intensive research interest in recent years. In paralleling the process technology and circuit design methodology, a compact model which serves as a link between the process technology and circuit design is strongly demanded. In this paper, we first review the FinFET process technology...
Crankshaft is one of the most important parts in internal combustion engine. In this paper, a three-dimension model of 380 diesel engine crankshaft was created through Pro/ENGINEER software. The finite element analysis (FEM) software ANSYS was used to analyze the distortion and stress status of the crankshaft. First of all, the 380 diesel engine entity crankshaft model was created by Pro/ENGINEER...
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