An energy dissipation for oscillating systems consist of thin-walled unit with a point loading

Аuthors

Demidov A. S.^1*, Kashelkin V. V.^2**

1. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
2. Company «Red Star», 1а, Elektrolitny proezd, Moscow, 115230, Russia

*e-mail: demidov@mai.ru
**e-mail: re.entry@g23.relcom.ru

Abstract

Techniques are considered to study some modal characteristics including logarithmic decrement and natural frequency for beams and silphons with a point loading. The study is based on experimental results obtained by the authors as well as on data extracted from other publications. The beams studied were made of stainless steel, structural steel, duraluminium or magnalium. It is shown that a residual life for oscillating systems with a point loading can be expressed through their modal characteristics. Some examples are given which allow to confirm these conclusions.