STRUCTURAL SYNTHESIS OF ASSUR EIGHT-BAR CLOSED KINEMATIC CHAINS OF THE FIRST FAMILY MOVABLE LINKS OF THE FOURTH TYPE-Reference-Cited by-同舟云学术

STRUCTURAL SYNTHESIS OF ASSUR EIGHT-BAR CLOSED KINEMATIC CHAINS OF THE FIRST FAMILY MOVABLE LINKS OF THE FOURTH TYPE

Published:2024-07-12 Issue:7 Volume:2024 Page:11-21
ISSN:2782-5957
Container-title:Transport engineering
language:en
Short-container-title:

Author:

Vovkotrub Valeriy¹^ORCID

Affiliation:

1. Krasnodar Higher Military Aviation School of Pilots named after Hero of the Soviet Union A.K. Serov of the Ministry of Defense of the Russian Federation;

Abstract

The study objective is to develop a method for the structural synthesis of closed kinematic chains (CKC) of moving links onto Assur eight-bar CKC of the first family of the fourth type. The tasks are the following: based on the universal structural system of closed kinematic chains of the first family to determine the composition of solutions describing the arrangement of Assur closed kinematic chains of the first family with the complexity of the basic chain link equal to four, chain mobility equal to six and the total number of chain links equal to eight. To identify virtual chain links and obtain combinations of kinematic pairs and links that are the basis for constructing structural schemes of Assur eight-bar closed kinematic chains of the first family according to the given parameters. Using the obtained data, to consider constructing structural schemes of Assur eight-bar closed kinematic chains of the first family of the fourth type on a specific example. Research methods are the method of structural synthesis of closed kinematic chains of moving links of the first family, set theory and combinatorics, virtualization, identification and coding, graph theory. The novelty of the work: the features of applying a universal structural system for determining the composition of Assur eight-bar closed kinematic chains of the first family of the fourth type are given. Using a specific example, the order of applying the obtained solutions for synthesis of structural schemes of Assur eight-bar closed kinematic chains of the first family of the fourth type is considered. The study results: combinations of kinematic pairs and links are found, which make it possible to construct all possible structural schemes of Assur eight-bar closed kinematic chains of the first family under given parameters. A diagram of an eight-bar closed kinematic chain of the six subfamily movable links of the first family of the fourth type is obtained, from which single-movable eight-bar mechanisms of the first family can be formed by stopping one of the links.

Publisher

Bryansk State Technical University BSTU

Reference14 articles.

1. Grubler M. Allgemeine Eigenschaften der zwanglaufigen ebenen kinematischen Ketten // Civilingenieur. Leipzig. 1883. № 29. Р. 167-200., Grubler M. Allgemeine Eigenschaften der zwanglaufigen ebenen kinematischen Ketten. Leipzig: Civilingenieur. 1883;29:167-200.

2. Дворников Л.Т., Жуковский Н.С. Адаптированный перевод с немецкого языка статьи: Martin Grübler «Allgemeine Eigenschaften der zwanglaüfigen ebenen kinematischen Ketten», изданной в Лейпциге в 1883 г. // Материалы девятнадцатой научно-практической конференции по проблемам механики и машиностроения. - Новокузнецк, 2009. С.73-95., Dvornikov LT, Zhukovsky NS. Adapted translation from German: Allgemeine Eigenschaften der zwanglaüfigen ebenen kinematischen Ketten. Proceedings of the 19th Scientific and Practical Conference on Problems of Mechanics and Machine Building. Novokuznetsk; 2009.

3. Пейсах Э.Е. Проблема изоморфизма структур и идентификационный структурный код для замкнутых кинематических цепей // Вестник Санкт-Петербургского государственного университета технологии и дизайна. СПб, 2008. № 15. С. 40-46., Peisakh EE. Problem of structure isomorphism and the identification of structural code for closed kinematic chains. Vestnik of St. Petersburg State University of Technology and Design. Natural and Technical Sciences. 2008;15:40-46.

4. Butcher E.A., Hartman C. Efficient enumeration and hierarchical classification of planar simple-jointed kinematic chains: Application to 12-and 14-bar single degree-of-freedom chains. -Mechanism and Machine Theory, Volume 40, No. 9, September 2005, p. 1030-1050., Butcher EA, Hartman C. Efficient enumeration and hierarchical classification of planar simple-joined kinematic chains: application to 12- and 14-bar single degree-of-freedom chains. Mechanism and Machine Theory. 2005;40(9):1030-1050.

5. Федоров А.И., Дворников Л.Т. К вопросу о полном составе восьмизвенных плоских цепей Грюблера // МашиноСтроение. Новокузнецк , 2010. № 20. С. 45-51., 5 Fedorov AI, Dvornikov LT. On the problem of the full composition of eight-bar flat Grubler chains. Novokuznetsk: Mashinostroenie. 2010;20:45-51.