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News
January, 09 2008  The railway wheel cyclic load research with a possible flows accumulation and the formation of cracks zone determination were lead. The research results provide to define the load effect cycles to the wheel quantity and its reliable downtime. December, 18 2007  The railway wheel strength research complex, taking the possibility of crack formation into account, had been completed. Several pictures of crack origin chance distribution were visualized among the research wheel variants, providing to discover its position. October, 23 2007  The process of the wire bar drawing has been studied. Plasto-elastic statement of the problem made it possible to represent material behaviour during the drawing process taking into consideration residual stresses and deformations. October, 16 2007  Dynamic investigations of the mechanisms with kinematic pairs of higher degree are in progress. Research of the previously developed models that participate in dynamic analysis made it possible to obtain and study force parameters and dynamic behaviour of the elements and system in whole. September, 22 2007  At present the preparation to the complex of the cold stamping process researching subject to the material deformative and the product geometrical characteristics is being held. The series of the cold stamping tests has been worked out. The comparison of these tests results and the analytical decisions ones made possible the estimated accuracy of the developed finite-element models. August, 22 2007  After finishing the developing of the most precise spider facade model, i.e. the exterior facade glazing of new type, there has been done its strengthening calculation. In the model the following peculiarities of glazing work are reflected: the ability of glass panel system flexible work in the interaction with the wind load through the spider platform rotation and the panel rows independent work. After the model discretization there has been done the strengthening calculation for the combination of the natural weight, wind and sleet-wind load. The obtained efforts in the facade anchoring clampings allow selecting the most appropriate embedded fittings and clamping elements, whiling the model strengthening and transition analysis indicates the spider facade elements sufficient strength. August, 08 2007  Together with the intersection frame strengthening calculation for the loading spectrum there has also been made analysis of its general buckling, as well as the steadiness of its separate elements. It should be noted that in the State Rates and Rules "Loadings and Effects" the construction buckling analysis is standardized insufficiently. But at the same time buckling calculation for the combination of natural weight and snow load indicates that frame elements connected with the columns loose their buckling. So, the intersection frame complex analysis supplemented with the buckling analysis gives the most total characteristic of its behaviour and the ability of further construction improvement. July, 26 2007  In the intersection frame strength analysis there have been used the technique of the complex model creation on the basis of the bean and shell elements, where the fragmentation of separate model elements has allowed obtaining the most precise calculation results. The intersection frame strength analysis has been done according to the State Rates and Rules "Loadings and Effects" for the combinations including natural weight, wind, snow and wind-and-sleet loads. So, the results of the above mentioned structure calculation complex give the total characteristic of its behaviour in the wide range of influences. June, 13 2007 On June 8, 2007 by the Certificate of the Interdepartmental Committee it has been summarized the whole ammount of the complex and productive work on the developing the new type of railway wheel for the high-loaded transport. Mr. Tkachenko Volodymyr Ivanovych, director of Konkort Ltd., represented the calculations of railway wheels for the high-loaded transport; stated in detail their strengthening analysis technique conditions, based on the principles of the American standard "AAR Manual of Standards and Recommended Practices. Wheel and Axles. Analytic Evaluations of Locomotive and Freight Car Wheel. Standard S-660, 2004". Mr. Tkachenko has also specialized the main problems of doing calculations for the different loadings and influences. The Certificate of the Interdepartmental Committee has been signed. One of the Certificate of the Interdepartmental Committee conclusions is that the produced test set of wheels (100 pieces) will be rolled under the wheels in order to find out the duration of failsafe run under the conditions of national transport of May, 30 2007  Application of complex spectrum of loading on the plate cover has demanded its overall calculation in the form of static and modal analysis with the searching of natural forms and frequencies, as well as dynamic analysis of the reaction to the short-term effects. Non-homogeneity of the cover stressed and deformed state is connected with the irregular spectrum of static loadings and accelerative characteristics.May, 21 2007  There has been carried out examination of the deflected mode of hygiene and sanitary module cover in the view of searching its optimal construction, which allowed this construction to have been changed and general strength having been increased. In the process of calculation there have been used technique of laminated packet construction modeling, which allowed to express the characteristics of fiberglass cover most precisely and, respectively, to receive more perfect results. May, 7 2007  There has been finished examination of the deflected mode of the passenger car sanitation block. While creating geometry, special attention has been payed to modeling the system on the basis of super elements by several specialists and to the subsequent calculation of the model elements. April, 27 2007  There has been finished designing the kinematical analysis procedure of gear drive of different types on the basis of MSC.Adams. The introduced algorithm allows to model favorably, fast and due the work of mechanical system with its main kinematical and force characterization. April, 23 2007  There has been carried out comparative analysis of the results of three versions of calculation of reducer case stress and strain. The definitive results made it possible to find the best optimum alternative of reducer version in respect to its conformity to operating demands. April, 20 2007  There have been carried out three versions of the reducer case stress and strain analysis. New methods of model creation, representation of case and bolts joint action, as well as calculating subject to material elastic-plastic behavior - have been applied. The obtained results differ in high accuracy conditioned by using valid to the real object model in which the original principals of its creation have been applied.February, 6 2007  It has been finished the program of researching the process of oversized fit of cartridges. There have been researched cases of insertion of cartridges from different materials into the plate. There have been patterned occurrence of influence on the shearing force connection. January, 18 2007  It has been finished analysis of stressedly-deformed state of the tooth-wheels of reducer. December, 26 2006  Strength analysis of reducer of the column crane tilting gear is going on. Development of the first order finite-elemental model made it possible to do its calculation with the highest accuracy (traversing with the accuracy to micron). There have been received results of the stressedly-deformed condition of the frame (in the picture stressedly-deformed condition is shown in the expanded scale).December, 12 2006  There has been finished strength analysis of the railway coach. The developed finite-elemental model made it possible to research in detail stressedly-deformed state of elements of the carriage construction as a reaction for the wide range of loadings. December, 6 2006  There has been fulfilled substantiation of the combined finite-elemental model with the open and closed profiles on the basis of the beam and shell elements. November, 29 2006  In the process is the developing of the model of the wall advertising board of composite pattern in which new principles of the finite-elemental discretization of the elements of different metrics are applied. Later on there will be analysed reaction of the model to the wind and snow load. November, 24 2006  There has been done strength calculation of the girder, which is the part of the storage facilities construction and there has also been made research of the firmness of the construction elements. November, 16 2006  There have been carried out investigations of influence of variable loads on the excavator bucket, on the arising-in-the-body-support forces and in the fastenings of the shovel boom and the body. November, 12 2006  Theoretical investigation of the railway-wheel tread and disk of the sliding wheel pair SUW-2000 (Poland) has been accomplished. The analyses of the equivalent potentials depending on the changes of the wheel tread thickness and load positions as well as analysis of durability have been done. There has also been carried out comparative analysis of the results of calculation of SUW-wheel and the wheel of GOST 9036-88. November, 7 2006  Calculation of the reaction of advertising board to the wind forcing has been made. Designing of the new form of the board - the most adequate one to the exposure forcing and distinguished for its high bearing capacity and low steel intensity – is being performed. November 4, 2006  Continuation of studying of carriage under frame strength. There was carried out finite-elemental discretization while obtaining of results of static calculation of load complex deflected mode.November 1, 2006  Theoretical results of Methods "Determination of Wheel and Rail Impact Force At Flat Wheel Rolling" are used in practical calculations of wheel strength.October 27, 2006  The Methods "Determination of Wheel and Rail Impact Force At Flat Wheel Rolling" are elaborated; the results obtained with their use make it possible to carry out dynamic analysis while rolling of flat wheels of different types. October 24, 2006  Continuation of work on S-shaped railway-wheel disk calculation. Thermoanalysis data are obtained. October 20, 2006  Continuation of work on S-shaped disk railway-wheel calculation. There were made static load calculations in accordance with Standard S-660 - 2004 ANALYTIC EVELUATION OF LOCOMOTIVE AND FREIGHT CAR WHEEL DESIGNS, there was carried out numerical analysis of deflected mode at thermal effects. The dynamic analysis studies are being begun. |
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