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JNTU 2007-2008 II YEAR II SEM. B. TECH. AE - MECHANISMS AND MECHANICAL DESIGN
Posted Date: 09 Dec 2007 Resource Type: Articles/Knowledge Sharing Category: Syllabus
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Posted By: Sri Member Level: Gold
Rating:  Points: 1
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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY
HYDERABAD
II Year B. Tech. AE – II semester T P C
4+1* 0 4
MECHANISMS AND MECHANICAL DESIGN
UNIT - I
MECHANISMS
Elements of links – Classification – Rigid link, flexible and fluid link – Types of kinematic pairs – Sliding, turning, rolling, screw and spherical pairs – Lower ad higher pairs – Closed and open pairs – Constrained motion – Completely, partially or successfully constrained and incompletely constrained.
MACHINES
Mechanism and machines – Classification of machines – Kinematic chain – Inversion of mechanism – Inversion of quadratic cycle, Chain – single and double slider crank chains. Exact and approximate Straight line Mechanisms - Peaucellier, Hart T. Chebibheff , Pantograph.
UNIT – II
KINEMATICS
Velocity and acceleration – Motion of link in machine – Determination of velocity and acceleration diagrams – Graphical method – Application of relative velocity method four bar chain.
ANALYSIS OF MECHANISMS
Analysis of slider crank chain for displacement, Velocity and acceleration of sliding – Acceleration diagram for a given mechanism, Kleins construction, Coriolis acceleration, Determination of Coriolis component of acceleration.
UNIT – III
PLANE MOTION OF BODY
Instantaneous center of rotation, centroids and axodes – Relative motion between two bodies – Three centers in line theorem – Graphical determination of instantaneous center, diagrams for simple mechanisms and determination of angular velocity of points and links.
UNIT – IV
Precission: Effect of Precission on Stability of moving vehicles such as motorcar motorcycle Aero planes and ships. Static and Dynamic forces generated due to in Precission in moving mechanisms including Gyroscopic motions.
UNIT – V
CAMS
Definition of cam and followers – Their uses – Types of followers and cams – Terminology – Types of follower motion – Uniform velocity – Simple harmonic motion and uniform acceleration. Maximum velocity and Maximum acceleration during out ward and return strokes in all the above three cases.
UNIT – VI
ANALYSIS OF MOTION OF FOLLOWERS
Roller follower – Circular cam with straight, concave and convex flanks.
UNIT – VII
DESIGN OF MACHINE ELEMENTS
Principles of mechanical design- dimensional tolerances, fits. Design of common machine elements Springs, shafts, couplings, Universal coupling.
UNIT – VIII
GEARS AND GEAR TRAINS
Introduction to gears-types, Law of gearing, Tooth profiles, specifications, classification-Helical, Bevel and worm gears: Simple and reverted gear train, epicyclic gear trains-velocity ratio or train value
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