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Pan W.-L.,Harbin Engineering University | Pan W.-L.,Heilongjiang Modern Manufacturing Engineering Research Center
Key Engineering Materials | Year: 2010

Network-based collaborative product development has become a trend in manufacturing industry, which depends on two key information technology: the Semantic Web and the standard for the exchange of product model data (STEP). EXPRESS is the STEP product data modeling language, and OWL is the standard ontology representing language used in the Semantic Web. Only when the EXPRESS models are converted to OWL models, product information can be exchanged at the Web. The ontology meta-modeling theory was employed to analysis the ontology definition metamodel of EXPRESS and OWL, in order to build up the mapping relationship between them. A formal EXPRESS-to-OWL mapping algorithm is then proposed, represented by abstract syntax.

Li J.,Harbin Engineering University | Li J.,Heilongjiang Modern Manufacturing Engineering Research Center
Key Engineering Materials | Year: 2010

Modular design is a key technique of mass customization. The relationship between the module interfaces is the basis of modular design, and it is essential to study the model and the application of the relationship between the module interfaces. Based on the Matter-element model of the Extenics, the models of the module, module interfaces and the relationship between module interfaces were established. Combining with the Boolean matrix of the module interfaces relationship, the application of the model was discussed.

Zhu S.,Heilongjiang Modern Manufacturing Engineering Research Center | Jiang J.,Harbin Engineering University
Advanced Materials Research | Year: 2012

The operating accuracy of the tractor driver directly affects the transportation efficiency and the airport security. The research of the human reliability is an important way to measure task performance and reduce errors. The main content of the study is to analyze the reliability of the driver of the towbarless tractor in Harbin International Airport. The task network is established using the method of HTN according to the towing actions. The reliabilities of each operation are calculated with the methods such as HCR and the characteristics of human behaviour (SOR). The simulation model is run for a hundred thousand times on the platform of the discrete event simulation software QUEST, and conclusions are brought out, one of them is the reliability of the driver is 99.666%. The main causes of the human error are the qualification and driving experience of the drivers and the circumstance of the airport. © (2012) Trans Tech Publications, Switzerland.

Zhu S.,Harbin Engineering University | Zhu S.,Heilongjiang Modern Manufacturing Engineering Research Center | Rustamov I.,Harbin Engineering University | Rustamov I.,Tashkent State Technical University
Key Engineering Materials | Year: 2012

This paper presents structural studies of a medium scale composite wind turbine blade construction made of epoxy glass fiber for a 750kW rated power stall regulated horizontal axis wind turbine system. The complex geometry of the blade with a skin-spar foam sandwich structure was generated by utilizing commercial code ANSYS finite element package. Dimensions of twist, chord and thickness were developed by computer program. NREL S-series airfoils with different chord thickness are used along current blade cross-sections. The current design method uses blade element momentum (BEM) theory to complete satisfactory blade design and can be carried out using a spreadsheet, lift and drag curves for the chosen aerofoil. According to composite laminate theory and finite element method, optimal blade design was obtained. The focus is on the structural static strength of wind turbine blades loaded in flap-wise direction and methods for optimizing the blade cross-section to improve structural reliability. Moreover, the natural frequencies and modal shapes of the rotor blade were calculated for defining dynamic characteristics. Structural analysis was performed by using the finite element method in order to evaluate and confirm the blade to be sound and stable under various load conditions.

Qiu C.-H.,Harbin Engineering University | Qiu C.-H.,Heilongjiang Modern Manufacturing Engineering Research Center | Wang C.,Harbin Engineering University
Key Engineering Materials | Year: 2010

To solve the permutation flowshop problem more effectively, a novel artificial immune particle swarm optimization (PSO) algorithm has been proposed. The new algorithm combined the biology immune system theory with particle swarm algorithm by the following phases. Firstly, the scheduling objective and constrain condition were served as antibodies while solutions was served as antigens. Secondly, the particles were encoded as workpiece processing sequence. Furthermore, a concentration selection strategy was adopted to maintain the particle diversity. Finally, comparing with genetic algorithm and PSO, case results showed that immune PSO algorithm not only optimized results and convergence velocity but also had a small fluctuation.

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