Six novel 6R metamorphic mechanisms induced from three-series-connected Bennett linkages that vary among classical linkages

Abstract This paper looks at class of mechanisms that change structure when erected or folded. The class includes a variety of artefacts and decorative gifts and boxes comprised of flat card creased to enable the folding or unfolding of a structure. Such a structure admits kinematics study in keeping with theory of mechanisms when the creases are treated as hinges joining card and paper panels treated as links. New horizons have been brought up in the use and mechanised manufacture of mechanisms of this kind. Here typical types are described in terms of their fundamental parts and their equivalent mechanisms. Screw system theory is brought into the analysis of mechanisms of these kinds, particularly those containing multiple loops. Different geometry and system combinations are used for the study of mobility and kinematics making use of the result from the equivalent screw systems.

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The Equivalent Resistance Gradient Model of Metamorphic Mechanisms and the Design Method

Journal of Mechanical Engineering ◽

10.3901/jme.2014.01.018 ◽

2014 ◽

Vol 50 (1) ◽

pp. 18 ◽

Cited By ~ 3

Author(s):

Shujun LI

Keyword(s):

Design Method ◽

Equivalent Resistance ◽

Gradient Model ◽

Metamorphic Mechanisms

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Topology and Constraint Analysis of Reconfiguration in Metamorphic Mechanisms

Volume 2: 34th Annual Mechanisms and Robotics Conference, Parts A and B ◽

10.1115/detc2010-28434 ◽

2010 ◽

Author(s):

Ketao Zhang ◽

Jian S. Dai ◽

Yuefa Fang ◽

Zi-Qiang Zhu

Keyword(s):

Phase Change ◽

Adjacency Matrix ◽

Matrix Phase ◽

Topological Phase ◽

Revolute Joints ◽

Constraint Analysis ◽

Metamorphic Mechanisms

This paper investigates the reconfiguration of the metamorphic mechanisms and proposes mechanism topology matrix, phase matrix and augmented adjacency matrix to identify variation of geometric and topological configurations. This is then used to investigate the two generic ways in the study of induced constraint change of the metamorphic mechanisms. The topological phase change of the metamorphic mechanisms correlative to the variable-axis revolute joints and link annex is hence investigated and constraint analysis is then presented in the working phases of the new metamorphic mechanisms.

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Research on Dynamics Modeling and Simulation of Constrained Metamorphic Mechanisms

Iranian Journal of Science and Technology Transactions of Mechanical Engineering ◽

10.1007/s40997-019-00330-y ◽

2019 ◽

Author(s):

Yanyan Song ◽

Boyan Chang ◽

Guoguang Jin ◽

Zhan Wei ◽

Bo Li ◽

...

Keyword(s):

Modeling And Simulation ◽

Dynamics Modeling ◽

Metamorphic Mechanisms

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Type synthesis of metamorphic mechanisms with scissor-like linkage based on different kinds of connecting pairs

Mechanism and Machine Theory ◽

10.1016/j.mechmachtheory.2020.103848 ◽

2020 ◽

Vol 151 ◽

pp. 103848

Author(s):

Guanglu Jia ◽

Bing Li ◽

Hailin Huang ◽

Dan Zhang

Keyword(s):

Type Synthesis ◽

Metamorphic Mechanisms

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Genome Reconfiguration of Metamorphic Manipulators Based on Lie Group Theory

Volume 2: 32nd Mechanisms and Robotics Conference, Parts A and B ◽

10.1115/detc2008-49906 ◽

2008 ◽

Cited By ~ 2

Author(s):

Liping Zhang ◽

Jian S. Dai

Keyword(s):

Group Theory ◽

Genetic Structure ◽

Lie Group ◽

Genetic Information ◽

Evolutionary Process ◽

Building Blocks ◽

Biological Study ◽

Lie Group Theory ◽

Full Complement ◽

Metamorphic Mechanisms

This paper investigates reconfiguration which was induced by topology change as a typical character of metamorphic mechanisms in a way analogous to the concept of genome varation in biological study. Genome is the full complement of genetic information that an organism inherits from its parents, espercially the set of genes they carry. Genome variation is to study the change and variation of this complement with genetic information and genes connectivity and is analogous to mechanisms reconfiguration of metamorphic mechanisms. Metamorphic mechanisms with reconfigurable topology are usually changing their configurations and varying mobility in accordance with different sub-working phase functions. The built-in spatial biological modules are for the first time compiled and introduced in this paper based on metamorphic building blocks in the form of metamorphic cells and associated inside break-down parts as the metamorphic genes for metamorphic bio-modeling as genome. The gene sequencing labels the genetic structure composition principle of the metamorphic manipulators. The bio-inspired mechanism configuration evolution is further introduced in this paper motivated by biological concept to metamorphic characteristics as different sub-phase working mechanisms gradually change and develop into different forms in a particular situation and over a period of time, as an evolutionary process of topological change that takes place over several motion phases during which a taxonomic group of organisms showing the change of their physical characteristics. Moreover, the proposed genetic structure composition principle in metamorphic manipulators leads to the development of module evolution and genetic operations based on the displacement subgroup algebraic properties of the Lie group theory. The topology transformations can further be simulated for configuration evolution and depicted with the genetic growth and degeneration in the living nature. Genome sequential reconfiguration for metamorphic manipulators promises to be mapped from degenerating the source generator to multiple sub-phase configurations. Evolution design illustrations are given to demonstrate the concept and principles.

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