# Dynamics of Machinery Pdf Notes – DM Notes | Free Lecture Notes download

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Here you can download Dynamics of Machinery lecture Notes (Dynamics of Machinery Pdf Notes – DM Notes)  materials with multiple file links to download. The dynamics of machinery pdf free download starts with the topics covering Gyroscopes, effect of precession motion on the stability of moving vehicles such as motor car, Introduction – Free Body Diagrams, Three position synthesis, Friction clutches, Turning moment, Porter and Proell governors, Balancing of rotating masses Single and multiple,  Free Vibration of mass attached to vertical spring Simple problems on forced damped vibration Vibration Isolation, etc.

## Dynamics of Machinery Notes pdf – DM notes pdf file

Complete Notes

Unit 1

Unit 2

Unit 3

Unit 4

Unit 5

### Dynamics of Machinery Pdf Notes – Old Material Links

Complete Notes

Unit 1

Unit 2

Unit 3

Unit 4

Unit 5

Unit 6

Note :- These notes are according to the R09 Syllabus book of JNTU.In R13 and R15,8-units of R09 syllabus are combined into 5-units in R13 and R15 syllabus. If you have any doubts please refer to the JNTU Syllabus Book.

### Dynamics of machinery lecture notes topics covered

UNIT – I

PRECESSION : Gyroscopes, effect of precession motion on the stability of moving vehicles such as motor car, motor cycle, aero planes and ships.

UNIT – II

STATIC AND DYNAMIC FORCE ANALYSIS OF PLANAR MECHANISMS: Introduction – Free Body Diagrams – Conditions for equilibrium – Two three and four force Members – inertia forces and D‘ Alembert’s Principle planar rotation about a ﬁxed center.

UNIT –III

SYTHESIS OF LINKAGES: Three position synthesis – Four Position synthesis – Precision positions – structural error – Chebychev’s spacing, freudentein’s Equation, Problems.

UNIT – IV

Clutches: Friction clutches- Single Disc or plate clutch, Multiple Disc Clutch, Cone Clutch, Centrifugal Clutch.
BRAKES AND DYNAMOMETERS : Simple block brakes, internal expanding brake, band brake of vehicle. Dynamometers – absorption and transmission types. General description and methods of operations.

### Dynamics of Machinery Notes pdf – DM notes pdf

UNIT-V

TURNING MOMENT DIAGRAM AND FLY WHEELS : Turning moment – Inertia Torque connecting rod angular velocity and acceleration, crank effort and torque diagrams – Fluctuation of energy – Fly wheels and their design.

UNIT – VI

GOVERNERS : Watt, Porter and Proell governors. Spring loaded governors – Hartnell and hartung with auxiliary springs. Sensitiveness, isochronism and hunting.

UNIT –VII

BALANCING : Balancing of rotating masses Single and multiple – single and different planes. Balancing of Reciprocating Masses: Primary, Secondary, and higher balancing of reciprocating masses. Analytical and graphical methods. Unbalanced forces and couples – examination of “V” multi cylinder in line and radial engines for primary and secondary balancing, locomotive balancing.

UNIT – VIII

VIBRATION : Free Vibration of mass attached to vertical spring Simple problems on forced damped vibration Vibration Isolation & Transmissibility – Whirling of shafts, critical speeds, torsional vibrations, two and three rotor systems.

Reference:

1. Mechanism and Machine Theory / JS Rao and RV Dukkipati / New Age
2. Theory of Machines / Shiegly / MGH
3. Theory of Machines / Thomas Bevan / CBS Publishers
4. Theory of machines / Khurmi/S.Chand.

Text books:

1. Theory of Machines / S.S Ratan/ Mc. Graw Hill Publ.
2. Theory of Machines / Jagadish Lal & J.M.Shah / Metropolitan.

Q1: What is dynamics of machinery?

A1: The study of machines, motion of machines considering the forces acting on them is called Dynamics of Machinery. It a branch under theory of machines and mechanisms. This branch deals with machine and mechanisms basic problems.

Q2: What are Vibration analysis and free vibrations?

A2: Vibration analysis aims to detect equipment faults which results in reducing maintenance costs and equipment downtime.

Free vibrations are the oscillators in which total energy stays the same over time meaning the amplitude of the vibration stays the same. These vibrations occur when the object is forced to vibrate by a periodic input of force at a particular frequency.

Q3: What are Damping and its types?

A3: Influence upon or within an oscillatory system that has the effect of restricting, preventing or reducing its oscillations is called Damping. It has 3 major types

1. Viscous damping
2. Dry friction or coulomb damping
3. Solid/material/structural damping

Q4: What are the basic problems to deal with under dynamics of machinery?

A4: Some of the basic problems to deal with under dynamics of machinery are

• Control of the motion of components
• Definition of laws of motion of the components of mechanism
• Determination of frictional losses
• Balancing of machines and mechanisms
• Determination of reactions in kinematic pairs