Obiekt

Tytuł odmienny:

Drgania i stateczność płyty w opływie naddźwiękowym obciążonej siłą śledzącą z przegubową podporą zewnętrzną i wewnętrzną sprężysto-tłumiącą ; Drgania i stateczność płyty w opływie naddźwiękowym obciążonej siłą śledzącą z przegubową podporą zewnętrzną i wewnętrzną sprężysto-tłumiącą

Abstrakt:

The vibrations and stability of a plate having a finite length were considered in a flat supersonic flow, having adopted an assumption that one of the edges of the plate has a hinged support, and the other edge is free. Another support was located in an internal point of the plate and featured resilient attenuation properties. A compressive force, called the follower force, was applied within the plane of the plate in a direction tangent to the deformed surface of the plate. This way, a superficial system was forced in which two independent physical factors occurred and caused its self-excitation. Therefore the superficial system could be termed a ‘double self-excited system’. The solution of the equations of motion for the system was derived with a Laplace transformation. In the further part of the work, a numerical analysis was carried out for the conditions of the occurrence of self-excited vibrations in relation to the position of the internal support (the so-called plate overhang), the damping within the material of the plate and other parameters of the plate, including the resilient attenuation parameters of the internal support. For the adopted parameters, the results were tested for the calculations of the stability area limits and the instability of the system in plane γ1, σ. The forms of vibrations for a series of typical cases was determined.
; The vibrations and stability of a plate having a finite length were considered in a flat supersonic flow, having adopted an assumption that one of the edges of the plate has a hinged support, and the other edge is free. Another support was located in an internal point of the plate and featured resilient attenuation properties. A compressive force, called the follower force, was applied within the plane of the plate in a direction tangent to the deformed surface of the plate. This way, a superficial system was forced in which two independent physical factors occurred and caused its self-excitation. Therefore the superficial system could be termed a ‘double self-excited system’. The solution of the equations of motion for the system was derived with a Laplace transformation. In the further part of the work, a numerical analysis was carried out for the conditions of the occurrence of self-excited vibrations in relation to the position of the internal support (the so-called plate overhang), the damping within the material of the plate and other parameters of the plate, including the resilient attenuation parameters of the internal support. For the adopted parameters, the results were tested for the calculations of the stability area limits and the instability of the system in plane γ1, σ. The forms of vibrations for a series of typical cases was determined.

Miejsce wydania:

Warszawa
; Warszawa

Wydawca:

Wojskowa Akademia Techniczna ; Wojskowa Akademia Techniczna

Data utworzenia:

2010 r.0

Data złożenia:

2018-12-28 ; 2018-12-28

Data wydania:

2018-12-30 ; 2018-12-30

Rozmiar:

B5 ; B5

Identyfikator:

oai:ribes-88.man.poznan.pl:2531

Sygnatura:

DOI 10.5604/01.3001.0012.7338 ; DOI 10.5604/01.3001.0012.7338

ISSN elektroniczny:

2720-5266 ; 2720-5266

ISSN drukowany:

2081-5891 ; 2081-5891

Język:

angielski ; angielski

Właściciel praw:

Wojskowa Akademia Techniczna ; Wojskowa Akademia Techniczna

Strona początkowa:

127 ; 127

Strona końcowa:

148 ; 148

Tom:

9 ; 9

Słowa kluczowe:

mechanics, aeroelasticity, computer calculations ; mechanics, aeroelasticity, computer calculations