The influence of dynamic soil parameters on tractive performance of off-road undercarriages

• Autorzy: Dudziński P. , Stefanow P.

Identyfikatory

DOI

10.5604/12314005.1216449

• Języki publikacji: EN

Abstrakty

EN

Design of optimal machines and off-road vehicles requires, among others the knowledge of dynamic interaction of the traction components with soil. Due to the lack of constitutive equation of soil, in practice the research centres worldwide use the so-called process analogues, i.e. the special test devices. These devices however are used only for static tests and are burdened with the scale error. They are also often subject to the so-called wall effect and bulldozing effect. The research conducted in The Department of Off-Road Machine and Vehicle Engineering has shown that in the dynamic interaction of traction components or working tools with soil a substantial strengthening of cohesive soils, which can cause even several times increase in their strength, which significantly changes the commonly used relationships based on static tests. In the article, the unique on the international scale test equipment developed in the Department of Off-Road Machine and Vehicle Engineering for experimental identification of dynamic soil strength parameters is shown. In addition, the initial results of the tests obtained with this device in the laboratory and in situ are presented. The practical impact of dynamic strengthening of soil are presented as opposite to the conventional methods, at the example of traction forces generated by the tracked undercarriage estimated by virtue of an undercarriage analytical model.

Słowa kluczowe

EN

tracked undercarriage; terramechanics; soil dynamics; off-road vehicles

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2016
• Tom: Vol. 23, No. 3
• Strony: 115--120
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Dudziński P.

• Wrocław University of Technology Department of Off-Road Machine and Vehicle Engineering Łukasiewicza Street 7/9, 50-370 Wrocław, Poland tel.: [phone], fax: [phone]

autor

Stefanow P.

• Wrocław University of Technology Department of Off-Road Machine and Vehicle Engineering Łukasiewicza Street 7/9, 50-370 Wrocław, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Dudziński, P., Vergleich verschiedener Lenksysteme bei geländegängigen Maschinen mit Radfahrwerken, Habilitation thesis, Technische Universität Dresden, 1991.
• [2] Dudziński, P., Contribution to the studies on the dynamic shearing strength of soils, Proceedings of the 9th International ISTVS Conference, pp. 53-62, Barcelona, Spain 1987.
• [3] Dudziński, P., Stefanow, D., Innovative device for experimental identification of dynamic vehicle-soil interaction indexes, Przegląd Mechaniczny, Vol. 5, pp. 39-42, 2015.
• [4] Kogure, K., Yamaguchi, H., Ohira, Y., Comparison of strength and soil thrust characteristics among different soil shear tests, J. Terramechanics, 25(3), pp. 201-221, 1988.
• [5] PN-88/B-04481, Grunty budowlane – Badania próbek gruntu, 1988.
• [6] Shoop, S., Comparison of thawing soil strength measurements for predicting vehicle performance, US Army Corps of Engineers, CRREL Report 92-17, 1992.
• [7] Stafford, J., Tanner, D., Field measurement of soil shear strength and a new design of field shear meter, Proceedings of the 9th Conference of the International Soil Tillage Research Organization, ISTRO, Osijek, pp. 656-661, Yugoslavia 1982.
• [8] Stefanow, D., Modelling interaction of tracked undercarriage with soil, Doctoral thesis, Wrocław 2015.
• [9] Zimbone, S., Vickers, A., Morgan, R., Vella, P., Field investigations of different techniques for measuring surface soil shear strength, Soil Technology, 9, pp. 101-111, 1996.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.