Dynamic analysis of non-linear processes in super heavy-lift launch vehicle erector and polyspast lifting system

Zolin, Anatoly; Udovik, I.S.

doi:10.1063/1.5133266

Cited by 9 publications

(2 citation statements)

References 6 publications

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“…It is assumed that for the class of dynamical systems under consideration there is an inequality: m ≤ 3θ, where θ is the number of closed kinematic contours included in the dynamical system. Some examples of the implementation of dynamic analysis for other systems can be found, for example, in [16][17][18]. The formalization of the dynamic model of elastic tree systems in the presence of additional holonomic connections is carried out on the basis of the generalized Newton-Euler formalism and is described in detail in the publication [15].…”

Section: Problem Statement and Remarks On Numerical Solutionmentioning

confidence: 99%

Analysis of the periodicity of movements of mechanisms with elastic links of variable length

Kurdina,

Gevorgyan

2024

J. Phys.: Conf. Ser.

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Elastic dynamic systems with open kinematic chains are effectively described by a recursive model of the generalized Newton–Euler method with the provision of computational algorithms with a degree of complexity proportional to the dimension of these systems, i.e. O(n). Such systems, in particular, are elastic manipulators, some of which are discussed in this article. In the case when elastic dynamical systems have closed kinematic circuits, the application of a numerical analysis strategy without reversing the mass matrix is extremely difficult. The analysis of the simplest type of elastic mechanisms with closed circuits, such as a crank–slide mechanism and a four–pin mechanism with elastic connecting rods, revealed a peculiar picture of the periodicity of the functions of elastic movements of connecting rods, which differs significantly from the periods of operation of the mechanisms themselves. In this article, the properties of the periodicity (or pseudo-periodicity) of the elastic displacement function of mechanisms with elastic links of variable length are investigated using examples of numerical dynamic analysis of crank–rocker mechanisms.

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Section: Problem Statement and Remarks On Numerical Solutionmentioning

confidence: 99%

Analysis of the periodicity of movements of mechanisms with elastic links of variable length

Kurdina,

Gevorgyan

2024

J. Phys.: Conf. Ser.

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“…, n) are generalized coordinates and the symbols 'r' and 'e' express abbreviations for the words rigid and elastic. Examples of the implementation of dynamic analysis for other systems can be found, for example, in [15][16][17].…”

Section: Traditional Formulation Of the Problemmentioning

confidence: 99%

On a pseudo-periodicity in the elastodynamics

Kurdina

Gevorgyan

2022

J. Phys.: Conf. Ser.

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The periodic laws of motion of a real mechanism imply the periodicity of all dynamic characteristics of the mechanism during such a movement, including the elastic displacements of its constituent links. This statement covers the most difficult problem of the dynamics of an elastically deformable body. However the existing publications devoted to the study of flexible mechanisms do not mention the periodicity of elastic displacements of the links when the mechanisms move according to periodic laws. This article discusses the periodicity and pseudo-periodicity of the elastic displacements of the links using examples of calculations of the motion of a double pendulum and a slider–crank mechanism without taking into account dissipative forces.

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Promising transport infrastructure for the development of the planet Mars at the construction stage and the start of operation of a permanent base

Igritsky¹,

Mayorova²

2021

XLIV ACADEMIC SPACE CONFERENCE: Dedicated to the Memory of Academician S.P. Korolev and Other Outstanding Russian Scientists –

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Dynamic analysis of non-linear processes in super heavy-lift launch vehicle erector and polyspast lifting system

Cited by 9 publications

References 6 publications

Analysis of the periodicity of movements of mechanisms with elastic links of variable length

Analysis of the periodicity of movements of mechanisms with elastic links of variable length

On a pseudo-periodicity in the elastodynamics

Promising transport infrastructure for the development of the planet Mars at the construction stage and the start of operation of a permanent base

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