Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Seasonal variations of oscillation and vibration parameters of Acer platanoides

100%

Netsvetov M., Nikulina V.

Dendrobiology

2010

tom 64

This article describes an investigation into the seasonal variations of frequency, damping ratio and amplitude of swaying and vibration of Norway maple Acer platanoides L. The study was carried through a series of pull andrelease experiments in situ andon branches in the laboratory using an artificial air flow. It was foundthat foliatedtrees hada natural sway frequency that was on average 1.6±0.2 times greater than in the out-of-leaf state. In contrast, the damping ratio of maple increased by 1.5±0.3 times in the summer period. The stem swaying initiatedvibrations, i.e. elastic wave, in the roots with frequencies in the range of 45–50 Hz. Laboratory tests showed that the vibration amplitude of branches depended linearly on leaf mass for an air flow velocity of 1.94 m/s.

Growth drivers of monumental wild service tree (Sorbus torminalis) out of its natural range in Kyiv, Ukraine

61%

Prokopuk Y., Leshcheniuk O., Sukhomlyn M., Matiashuk R., Budzhak V., Netsvetov M.

Dendrobiology

2022

tom 87

Ograniczanie wyników

2 Dendrobiology

2 Netsvetov M.

1 Budzhak V.

1 Leshcheniuk O.

1 Matiashuk R.

1 Nikulina V.

1 Prokopuk Y.

1 Sukhomlyn M.

1 2022

1 2010

Wyniki wyszukiwania

Seasonal variations of oscillation and vibration parameters of Acer platanoides

Growth drivers of monumental wild service tree (Sorbus torminalis) out of its natural range in Kyiv, Ukraine