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2 Advances in Science and Technology. Research Journal

2 2018

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Finite Elements Strenght Analysis of a Compressor Consisting of Four Helical Rotors

Nieoczym Aleksander, Szklarek Karol

Advances in Science and Technology. Research Journal

2018

Vol. 12, no 1

1--8

The present article reports the results of tests of a compressor consisting of four helical rotors. Finite element strength analysis of rotors with varied screw thread pitch was performed. The analysis allowed us to determine the stress-strain state of the rotor material and deformation of rotors as an effect of loads generated during operation of the compressor. The analysis also made it possible to calculate the frequencies of the free vibrations of the rotors.

Evaluation of the Damage Initiation of a Composite Thin-Walled Structure, on the Example of the ADUSTER Gyroplane Undercarriage

Szklarek Karol, Różyło Patryk

Advances in Science and Technology. Research Journal

2018

Vol. 12, no 4

48--55

The subject of the research was a undercarriage leg of a gyroplane made of composite materials. The aim of the work was to assess the level of damage initiation of the composite gyroplane undercarriage. In the study, a structural capacity analysis was carried out, taking into account the phenomenon of damage initiation. Numerical calculations were conducted based on the finite element method in the ABAQUS® software. The issue was solved according to the Newton-Raphson algorithm.