1st Edition

Mechanism Design Enumeration of Kinematic Structures According to Function

By Lung-Wen Tsai Copyright 2001
    328 Pages 193 B/W Illustrations
    by CRC Press

    Traditionally, mechanisms are created by designer's intuition, ingenuity, and experience. However, such an ad hoc approach cannot ensure the identification of all possible design alternatives, nor does it necessarily lead to optimum design. Mechanism Design: Enumeration of Kinematic Structures According to Function introduces a methodology for systematic creation and classification of mechanisms.

    With a partly analytical and partly algorithmic approach, the author uses graph theory, combinatorial analysis, and computer algorithms to create kinematic structures of the same nature in a systematic and unbiased manner. He sketches mechanism structures, evaluating them with respect to the remaining functional requirements, and provides numerous atlases of mechanisms that can be used as a source of ideas for mechanism and machine design.

    He bases the book on the idea that some of the functional requirements of a desired mechanism can be transformed into structural characteristics that can be used for the enumeration of mechanisms. The most difficult problem most mechanical designers face at the conceptual design phase is the creation of design alternatives. Mechanism Design: Enumeration of Kinematic Structures According to Function presents you with a methodology that is not available in any other resource.

    INTRODUCTION
    A Systematic Design Methodology
    Links and Joints
    Kinematic Chains, Mechanisms, and Machines
    Kinematics of Mechanisms
    Planar, Spherical, and Spatial Mechanisms
    Kinematic Inversions

    BASIC CONCEPT OF GRAPH THEORY
    Definitions
    Tree
    Planar Graph
    Spanning Trees and Fundamental Circuits
    Euler's Equation
    Topological Characteristics of Planar Graphs
    Matrix Representation of Graphs
    Contracted Graphs
    Dual Graphs

    STRUCTURAL REPRESENTATIONS OF MECHANISMS
    Functional Schematic Representation
    Structural Representation
    Graph Representation
    Matrix Representation

    STRUCTURAL ANALYSIS OF MECHANISMS
    Correspondence between Mechanisms and Graphs
    Degrees of Freedom
    Loop Mobility Criterion
    Lower and Upper Bounds on the Number of Joints on a Link
    Link Assortments
    Partition of Binary Link Chains
    Structural Isomorphism
    Permutation Group and Group of Automorphisms
    Identification of Structural Isomorphism
    Partially Locked Kinematic Chains

    ENUMERATION OF GRAPHS OF KINEMATIC CHAINS
    Enumeration of Contracted Graphs
    Enumeration of Conventional Graphs
    Atlas of Graphs of Kinematic Chains

    CLASSIFICATION OF MECHANISMS
    Planar Mechanisms
    Spherical Mechanisms
    Spatial Mechanisms

    EPICYCLIC GEAR TRAINS
    Structural Characteristics
    Buchsbaum-Freudenstein Method
    Genetic Graph Approach
    Parent Bar Linkage Method
    Mechanism Pseudo Isomorphisms
    Atlas of Epicyclic Gear Trains
    Kinematics of Epicyclic Gear Trains

    AUTOMOTIVE MECHANISMS
    Variable-Stroke Engine Mechanisms
    Constant-Velocity Shaft Couplings
    Automatic Transmission Mechanisms
    Canonical Graph Representation of EGMs
    Atlas of Epicyclic Gear Transmission Mechanisms

    ROBOTIC MECHANISMS
    Parallel Manipulators
    Robotic Wrist Mechanisms
    APPENDICES:
    A. Solving m Equations in n unknowns
    B. Atlas of Contracted Graphs
    C. Atlas of Graphs of Kinematic Chains
    D. Atlas of Planar Bar Linkages
    E. Atlas of Spatial One-dof Kinematic Chains
    F. Atlas of Epicyclic Gear Trains
    G. Atlas of Epicyclic Gear Transmission Mechanisms

    NOTE: Introduction at the beginning of Chapters 1,3-9; Summary at the end of Chapters 1-6,8-9

    Biography

    Lung-Wen Tsai

    "…The topics covered in the book have wide applications in modern engineering technology."
    -Frank Kreith
    Editor of the CRC Mechanical Engineering Series

    topics covered in the book have wide applications in modern engineering technology."
    -Frank Kreith
    Editor of the CRC Mechanical Engineering Series