EBOOK - Fundamentals of Kinematics and Dynamics of Machines and Mechanisms (Oleg Vinogradov)

EBOOK - Các nguyên tắc cơ bản của chuyển động học và động lực học - Tác giả: Oleg Vinogradov (306 Trang).

The topic of Kinematics and Dynamics of Machines and Mechanisms is one of the core subjects in the Mechanical Engineering curriculum, as well as one of the traditional subjects, dating back to the last century. The teaching of this subject has, until recently, followed the well-established topics, which, in a nutshell, were some general properties, and then analytical and graphical methods of position, velocity, and acceleration analysis of simple mechanisms. In the last decade, computer technology and new software tools have started making an impact on how the subject of kinematics and dynamics of machines and mechanisms can be taught.
I have taught kinematics and dynamics of machines and mechanisms for many years and have always felt that concepts and numerical examples illustrating them did not allow students to develop a perception of a mechanism as a whole and an understanding of it as an integral part of the design process. A laboratory with a variety of mechanisms might have alleviated some of my concerns. However, such a laboratory, besides being limited to a few mechanisms, mainly serves as a demonstration tool rather than as a design tool, since it would be very time-consuming to measure such fundamental properties as position, velocity, and acceleration at any point of the mechanism. It would be even more difficult to measure forces, internal and external.
There is yet one more consideration. With class sizes as they are, the experience of a student becomes a group experience, limited in scope and lacking in the excitement of an individual “discovery.”

Chapter 1
Introduction
1.1 The Subject of Kinematics and Dynamics of Machines
1.2 Kinematics and Dynamics as Part of the Design Process.
1.3 Is It a Machine, a Mechanism, or a Structure?
1.4 Examples of Mechanisms; Terminology.
1.5 Mobility of Mechanisms
1.6 Kinematic Inversion.
1.7 Grashof’s Law for a Four-Bar Linkage

Chapter 2 Kinematic Analysis of Mechanisms
2.1 Introduction.
2.2  Vector Algebra and Analysis
2.3 Position Analysis
2.3.1 Kinematic Requirements in Design
2.3.2 The Process of Kinematic Analysis
2.3.3 Kinematic Analysis of the Slider-Crank Mechanism
2.3.4 Solutions of Loop-Closure Equations
2.3.5 Applications to Simple Mechanisms.
2.3.6 Applications to Compound Mechanisms
2.3.7 Trajectory of a Point on a Mechanism
2.4 Velocity Analysis
2.4.1 Velocity Vector.
2.4.2 Equations for Velocities.
2.4.3 Applications to Simple Mechanisms.
2.4.4 Applications to Compound Mechanisms
2.5 Acceleration Analysis
2.5.1 Acceleration Vector
2.5.2 Equations for Accelerations
2.5.3 Applications to Simple Mechanisms..
2.6 Intermittent-Motion Mechanisms: Geneva Wheel.
...

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EBOOK - Các nguyên tắc cơ bản của chuyển động học và động lực học - Tác giả: Oleg Vinogradov (306 Trang).

The topic of Kinematics and Dynamics of Machines and Mechanisms is one of the core subjects in the Mechanical Engineering curriculum, as well as one of the traditional subjects, dating back to the last century. The teaching of this subject has, until recently, followed the well-established topics, which, in a nutshell, were some general properties, and then analytical and graphical methods of position, velocity, and acceleration analysis of simple mechanisms. In the last decade, computer technology and new software tools have started making an impact on how the subject of kinematics and dynamics of machines and mechanisms can be taught.
I have taught kinematics and dynamics of machines and mechanisms for many years and have always felt that concepts and numerical examples illustrating them did not allow students to develop a perception of a mechanism as a whole and an understanding of it as an integral part of the design process. A laboratory with a variety of mechanisms might have alleviated some of my concerns. However, such a laboratory, besides being limited to a few mechanisms, mainly serves as a demonstration tool rather than as a design tool, since it would be very time-consuming to measure such fundamental properties as position, velocity, and acceleration at any point of the mechanism. It would be even more difficult to measure forces, internal and external.
There is yet one more consideration. With class sizes as they are, the experience of a student becomes a group experience, limited in scope and lacking in the excitement of an individual “discovery.”

Chapter 1
Introduction
1.1 The Subject of Kinematics and Dynamics of Machines
1.2 Kinematics and Dynamics as Part of the Design Process.
1.3 Is It a Machine, a Mechanism, or a Structure?
1.4 Examples of Mechanisms; Terminology.
1.5 Mobility of Mechanisms
1.6 Kinematic Inversion.
1.7 Grashof’s Law for a Four-Bar Linkage

Chapter 2 Kinematic Analysis of Mechanisms
2.1 Introduction.
2.2  Vector Algebra and Analysis
2.3 Position Analysis
2.3.1 Kinematic Requirements in Design
2.3.2 The Process of Kinematic Analysis
2.3.3 Kinematic Analysis of the Slider-Crank Mechanism
2.3.4 Solutions of Loop-Closure Equations
2.3.5 Applications to Simple Mechanisms.
2.3.6 Applications to Compound Mechanisms
2.3.7 Trajectory of a Point on a Mechanism
2.4 Velocity Analysis
2.4.1 Velocity Vector.
2.4.2 Equations for Velocities.
2.4.3 Applications to Simple Mechanisms.
2.4.4 Applications to Compound Mechanisms
2.5 Acceleration Analysis
2.5.1 Acceleration Vector
2.5.2 Equations for Accelerations
2.5.3 Applications to Simple Mechanisms..
2.6 Intermittent-Motion Mechanisms: Geneva Wheel.
...

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Chuyên mục: C. Bài giảng C. Bài giảng kỹ thuật C. Bài giảng kỹ thuật khác