Metody wyznaczania naprezen i przemieszczen w glebie pod obciazeniem

• Autorzy: Pytka J , Konstankiewicz K.

Warianty tytułu

EN

Methods of soil stress and deformations determinations under loads

• Języki publikacji: PL

Abstrakty

EN

Soil, as a tractive surface for agricultural tractors as well as military and off-road vehicles, is required to withstand dynamic loads occuring under wheels or tracks. mechanical properties of soil medium result in dependence between load, velocity of sytain and stress- deformation relationships. These information are of the major importance when considering soil compaction as well as tractive performaces of the vehicles. Having analyzed results pulished by many researches, the autors of this work haveconcluded the lack of a proper method for soil stress- deformation measurements. Therefore, the aim of the work is to desing and research some new methods of soil stress- deformation measurements. In the second chapter results of experimental research with a SST transducer are shown. The transducer allows to measure strasses for complete soil stress state calculations. Additionally, a mechanical system was used for soil deformations measurements in the three direction in space.The third chapter contains numerous details on desing of an improved version of the measuring system with an triaxal head. Soil deformations are measured with a novel method, which uses laser and a CCD camera.The next chapter describes another version, which is suitable for field experiments. Detailed descriptions of field procedures are given. A system for soil stress- deformation measurements developed with laser and optical fibers is shown in the last numbered chapter. There are also described some future designs, containing nanotechnology and telemetries.

Słowa kluczowe

PL

agrofizyka; gleby; przemieszczanie gleb; odksztalcenia gleby; struktura gleb; prace polowe; pojazdy rolnicze; urzadzenia pomiarowe; swiatlowody; technika swiatlowodowa; naprezenie styczne; pomiary naprezen; metody pomiarow; dokladnosc pomiaru; uklad przestrzenny; miniczujniki

EN

agrophysics; soil; soil movement; soil damage; soil structure; field work; agricultural vehicle; measurement device; optical fibre; tangential stress; stress measurement; measurement method; measurement accuracy; spatial arrangement; sensor

• Wydawca: -
• Czasopismo: Acta Agrophysica
• Rocznik: 1998
• Tom: 14
• Strony: 1-94
• Opis fizyczny: s.1-94,fot.,rys.,tab.,bibliogr.

Twórcy

autor

Pytka J

autor

Konstankiewicz K.

Bibliografia

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