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Analiza możliwości zastosowania elastomerowych systemów gąsienicowych w szybkobieżnych maszynach inżynieryjnych. Cz. 1, Przegląd rozwiązań konstrukcyjnych

Szpaczyńska Daniela, Łopatka Marian

Biuletyn Wojskowej Akademii Technicznej

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2021

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Vol. 70, nr 1

77--94

PL

W artykule przedstawiono analizę rozwiązań konstrukcyjnych układów jezdnych wykorzystujących gąsienice elastomerowe pod kątem możliwości ich użycia w szybkobieżnych maszynach inżynieryjnych, które wymagają intensywnego manewrowania oraz zdolności do rozwijania wysokich sił uciągu. Analizie poddano zarówno rozwiązania używane w aplikacjach cywilnych, jak i wyniki badań wykorzystania gąsienic elastomerowych w ciężkich pojazdach opancerzonych. Na tej podstawie sformułowano zalecenia konstrukcyjne do projektowania szybkobieżnych maszyn inżynieryjnych oraz wykorzystywanych w nich elastomerowych systemów gąsienicowych.

EN

The article presents an analysis of the design solutions of the running gear with rubber tracks in terms of their applicability in high-speed engineering machines that require intensive maneuvering and the ability to develop high tractive forces. Both solutions used in civil applications and the results of research on the use of rubber tracks in heavy armoured vehicles were analysed. On their basis, recommendations were formulated for the design of high-speed engineering machines and the rubber track systems used in them.

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On the energy losses due to tracks vibrations in rubber track crawler vehicles

Chołodowski Jakub, Dudziński Piotr A., Ketting Michael

Archives of Civil and Mechanical Engineering

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2021

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Vol. 21, no. 2

303--323

EN

In spite of an increasing number of rubber-tracked vehicles, there are no engineering models for predicting and optimizing the energy consumption of vehicles of this type. To formulate those models, the models of the phenomena resulting in the internal losses of rubber-track systems need to be developed. This article presents a model describing the losses caused by the transverse vibrations of rubber tracks. The predictions made using the model are discussed against the background of the preliminary experimental tests on a sample rubber track for heavy off-road vehicles. The model predictions and the experimental tests suggest that the losses caused by the 1st mode vibration of rubber tracks are marginal in relation to the total internal resistance of rubber-track systems. However, according to the model predictions, a significant increase in the rubber-tracked undercarriage internal resistance is expected as a result of the high-amplitude track vibrations corresponding to the higher-order modes. To make the model applicable in practice, a method for determining the essential parameters of the model, including the bending stiffness and the decrement of oscillation damping, is demonstrated. The accuracy of the method is confirmed by the computations, where the sag and the frequency of the 1st mode free vibration of a sample track are predicted with an error of 10% and 1.8%, respectively. The parameter values obtained by this method are suitable for modeling a wide variety of off-road vehicles. The method can be applied to many other types of reinforced rubber belts, e.g., conveyor belts.

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Energy efficiency of rubber tracked chassis

Dudziński P., Chołodowski J.

Journal of KONES

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2016

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Vol. 23, No. 2

97--104

EN

Nowadays, increasing number of machines and off-road vehicles are equipped with elastomeric, mainly rubber, tracked chassis. Rubber tracks and belts combine the most important advantages of both: pneumatic tires and conventional tracks made from metal links. In spite of significant benefits, rubber tracked chassis is a novel and uncommon design solution, as the application of rubber tracks and belts still brings up many severe problems. Consequently, an urgent need to overcome these problems exists. In The Division of Off-Road Machine and Vehicle Engineering (DORMVE) an intensive research, pertaining to rubber-tracked chassis has been conducted for many years. In the very beginnings, the investigation was carried on in cooperation with German companies INTERTRACTOR, IAMT and IBAF. As a result, numerous original and innovative design solutions, which became a subject of European, American and Japanese patents, were developed. However, some issues have not yet been resolved. Present research of DORMVE is aimed at identification of problems concerning energy efficiency of rubber-tracked chassis. The main objective of current investigation is to improve the energy efficiency. To do so a comprehensive optimisation process is to be carried out. Within the following article, a classification of aforementioned problems will be discussed. Research facilities in laboratory of DORMVE and exemplary results, which have already been obtained, will be also presented.