Agricultural Engineering, Volume 53 (2021)

MEASUREMENT OF VIBRATIONS OF AGRICULTURAL MACHINES BY USING MOIRE METHOD

Kazimieras Ragulskis*, Rimas Maskeliūnas**, Arvydas Pauliukas***, Petras Paškevičius****, Algimantas Bubulis*, Anatolii Korpach*****, Liutauras Ragulskis***
*Kaunas University of Technology; **Vilnius Gediminas Technical University; ***Vytautas Magnus University; ****Company “Vaivora”; *****National Transport University, Kyiv

Abstract

This paper is a full article on the basis of the material presented in the two conference thesis. In the process of investigation of dynamics and vibrations of agricultural machines various experimental methods are used. Among them moiré methods can be noted because of their simplicity and easy applicability. Projection moiré is most often used for this purpose. It is used to visually estimate the shape of the eigenmode by projecting moire grating to a flat part of the case of the agricultural machine. Time averaging is applied when investigating vibrations of the structure according to the eigenmode. In this paper possibilities of application of hybrid experimental – numerical procedures for measurements of large amplitude vibrations by reflection moiré are investigated.

Keyword(s): elastic structure, hybrid experimental – numerical procedures, large amplitude vibrations, time averaged moiré, reflection moiré.


References

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DOI: http://dx.doi.org/10.15544/ageng.2021.53.9

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Agricultural Engineering ISSN 1392-1134 / eISSN 2345-0371

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