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Anna University CAMPUS Placement cognizant 2013 passing Out students

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ANNA UNIVERSITY 1ST,3RD,5TH,7TH SEMESTER SYLLABUS 2008 REGULATION

AT2023 VIBRATION, NOISE AND HARSHNESS CONTROL | ANNA UNIVERSITY BE AUTOMOBILE ENGINEERING 6TH SEMESTER SYLLABUS REGULATION 2008 | BE AUTOMOBILE 6TH SEM SYLLABUS | APPLICABLE FOR CHENNAI, TRICHY, COIMBATORE, MADURAI, TIRUNELVELI| AUTOMOBILE QUESTION BANK

 ANNA UNIVERSITY BE AUTOMOBILE ENGINEERING 6TH SEMESTER SYLLABUS REGULATION 2008 | BE AUTOMOBILE 6TH SEM SYLLABUS | APPLICABLE FOR CHENNAI, TRICHY, COIMBATORE, MADURAI, TIRUNELVELI| AUTOMOBILE QUESTION BANK
AT2023 VIBRATION, NOISE AND HARSHNESS CONTROL L T P C
3 0 0 3
OBJECTIVES
The students will be able to understand the sources of vibration,noise and harshness in
automobiles and make design modifications to reduce them and improve the life of the
components and the comfort of the passengers
UNIT I BASICS OF VIBRATION 10
Introduction, classification of vibration: free and forced vibration, undamped and damped
vibration, linear and non linear vibration, response of damped and undamped systems
under harmonic force, analysis of single degree and two degree of freedom systems,
torsional vibration, determination of natural frequencies.
UNIT II VIBRATION CONTROL TECHNIQUES 10
Vibration isolation, tuned absorbers, untuned viscous dampers, damping treatments,
application dynamic forces generated by IC engines, engine isolation, crank shaft
damping, modal analysis of the mass elastic model shock absorbers
UNIT III BASICS OF NOISE AND SOURCES 10
Introduction, , noise dose level, legislation, measurement and analysis of noise in
engines, Noise characteristics,overall noise levels, assessment of combustion noise,
assessment of mechanical noise, engine radiated noise, intake and exhaust noise,
engine accessory contributed noise, transmission noise, aerodynamic noise, tyre noise,
brake noise.
UNIT IV NOISE CONTROL 9
Methods for control of engine noise, combustion noise, mechanical noise, predictive
analysis, palliative treatments and enclosures, automotive noise control principles,
sound in enclosures, sound energy absorption, sound transmission through barriers
UNIT V HARSHNESS AND ITS CONTROL 6
Harshness, sources.its effects,.measurement and control
TOTAL: 45 PERIODS
TEXT BOOKS
1. Singiresu S.Rao - “Mechanical Vibrations” - Pearson Education, ISBM –81-297-
0179-0 - 2004.
2. Rao V. Dukkipati and J.Srinivas ,”Text book of Mechanical Vibrations”, Prentice-Hall
of India P Ltd,New Delhi.2004
3. Kewal Pujara “Vibrations and Noise for Engineers, Dhanpat Rai & Sons, 1992.
REFERENCES
1. Bernard Challen and Rodica Baranescu - “Diesel Engine Refrence Book” - Second
edition - SAE International - ISBN 0-7680-0403-9 – 1999.
2. Julian Happian-Smith - “An Introduction to Modern Vehicle Design”- Butterworth-
Heinemann, ISBN 0750-5044-3 - 2004
3. John Fenton - “Handbook of Automotive body Construction and Design Analysis -
Professional Engineering Publishing, ISBN 1-86058-073- 1998
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