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Modelling of coal in a railway coach

Baier A., Majzner M.

Journal of Achievements in Materials and Manufacturing Engineering

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2011

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Vol. 45, nr 2

163--169

EN

Purpose: Objective of the study was to identify the forces acting on the structural elements of railway wagons. It is part of research conducted under a grant, on the use of composites in the repair and construction of new structural elements of railway wagons. Design/methodology/approach: The main tool of verification of the research is Siemens PLM Software NX 7.5. Motion simulation has been carried out in one module of the software, Motion Simulation. Connections between components have been made using constraints and connections mapping the real relationship between components. Findings: The aim of the study was to identify the forces acting on the door, and establish a database of input for further research. Research limitations/implications: The main limitations of the study were the possibility of mapping all the connections of components, in the same way as in reality. The second limitation was the maximum length of track, depending on the number of possible landmarks in which it was possible the measurement of variables. Originality/value: Results of the analysis of the wagon constructed with the standard steel components are input data to research on the modification of structural components on the basis of fibrous composite The results obtained are an example of application of the methods of computer analysis, on the basic type of testing wagons. Completed study is the first step in a study of movement railway wagon in further stages will be possible to perform the studies in more complex aspects of the movement.

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Databases and computer programs selection of technological features

Rząsiński R.

Journal of Achievements in Materials and Manufacturing Engineering

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2011

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Vol. 49, nr 2

350--359

EN

Purpose: The main reason for starting the research concerning the new methods of selection technological features. This process is realized across the replacement of the repeatable stages with the routined stages susceptible to computer aid. Design/methodology/approach: The main tool of algorithmization is the developed theory of technological similarity, supported by data bases application method [8,15]. Findings: The main achievements presented in this paper are developed method orientated on computer aiding and computer program method, both used in designing process of the new technical features. Research limitations/implications: Analyzed methods develop algorithmisation of selection features and support integration with the process of the preparation of the production. Further analyses will be carried on in order to specify the theory of the technological similarity in the new forms of computer aiding (relational databases). Practical implications: The represented programs were being developed on the practical examples of creating the module systems of hydraulic cylinders used in mining, slag cars used in metallurgy and gears series of types. Originality/value: Programs and data bases presented in the paper are basis of selection of the technological features in the process series of types of the technology creating. All of these applications support the intensive development of the types of technical features and affect on their competitive on the ready market.

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Application of feature method to the modelling of composite structural elements

Beier A., Majzner M.

Journal of Achievements in Materials and Manufacturing Engineering

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2011

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Vol. 45, nr 1

30--38

EN

Purpose: The paper describes the use of object-oriented methods in modelling and analysis of components made of fibre-based composites. Defined and specified the method for creating fibre primitives. An algorithm for the design of composite structures using object-oriented methods. Design/methodology/approach: The basic tool is an algorithm to build fibre facilities. Material properties can be found in the previously created databases of material objects. The whole is linked to the relevant formulas and diagrams. Findings: The basis for the introduction of object-oriented method was to systematize the processes of modelling and analysis of composite materials. Application issue features possible to determine the final form of composite structure. Research limitations/implications: Research direction is to create tools to support the work of the constructor during the construction of composite components. Material created a database of individual components of laminates, allows to build optimal in terms of established criteria of composite elements. Practical implications: The practical aspect of using object-oriented method is to use it to define the structure of the laminates. At the modelling stage it is possible to perform the parameterization formula of each phase of the composite. This recipe is especially important during the manufacture of composites. Originality/value: The paper presents a new approach to modelling of composites by defining a new elementary objects forming the basis for during the composite design process. Algorithms used in the work are particularly important for designers of new technical components made on the basis of fibre composites.