Selected Problems of Determining Critical Loads in Sructures with Stable Post-Critical Behaviour.

Ładowanie...
Miniatura

Data

2016

Tytuł czasopisma

ISSN czasopisma

Tytuł tomu

Wydawca

Lodz University of Technology. Faculty of Mechanical Engineering. Department Division of Dynamics.
Wydawnictwo Politechniki Łódzkiej. Wydział Mechaniczny. Katedra Dynamiki Maszyn.

Abstrakt

This paper presents selected cases of inapplicability of theory based methods of determining critical loads in thin – walled, composite tubes. 8th layered composite tubes with square cross-section were being subjected to static compression and in order to register experimental data two measuring equipment were employed: strain-gauges and Digital Image Correlation system ARAMIS R ⃝ . When measurement data were collected five different theory based methods were applied in order to determine critical loads. Cases where it was impossible to apply certain methods or some doubts about correctness of the results occurred were presented and analyzed. Moreover in cases where it was possible, the theory was equivalently transformed, in such a way to fit experimental data and calculate the critical loads.

Opis

Słowa kluczowe

buckling experiments, critical load determinations, stability investigations, strain–gauges, Digital Image Correlation, wyboczenie, korelacja obrazu cyfrowego, badanie stabilności, czujniki odkształceń

Cytowanie

Mechanics and Mechanical Engineering Vol. 20, No. 2, 2016, str. 79–95