Introduction:
Types of car bodies, bus bodies and commercial vehicle bodies.
Interior Ergonomics:
Introduction, Seating dimensions, Interior ergonomics, ergonomics system design, seat comfort, requirements of drivers and passenger seats, suspension seats, split frame seating, back passion reducers, dash board instruments, electronic displays, commercial vehicle cabin ergonomics, mechanical package layout, goods vehicle layout. Visibility, regulations, drivers visibility, methods of improving visibility, Window winding and seat adjustment mechanisms.
Aerodynamics:
Basics, Vehicle drag and types, Various types of forces and moments, effects of forces and moments, various body optimization techniques for minimum drag, Principle of wind tunnel technology, flow visualization techniques, tests with scale models, aerodynamic study for heavy vehicles.
Body Materials, Trim and Body Mechanisms:
Steel sheet, timber, plastic, glass, GRP, properties of materials - Corrosion - Anticorrosion methods – Selection of paint and painting process - Body trim items - Body mechanisms
Car body details:
Types: Saloon, hatchback, convertibles, Limousine, Estate Van, racing and sports car, etc. Car body construction types – frame and unitary (monocoque), various body panels and their constructional details
Bus body details:
Types: Mini bus, single and double Decker, split level and articulated bus, Bus body lay out, Floor height, Engine location, Entrance and exit location, Seating dimensions, Constructional details: Frame construction, Double skin construction, Types of metal section used, Regulations, Conventional and integral type construction
Body Loads and Design of Vehicle Bodies:
Idealized structure-structural surface, shear panel method, symmetric and asymmetrical vertical loads in car, longitudinal loads and different loading situations.
Vehicle Layout Design:
preliminary design, Load distribution on vehicle structure, stress analysis of bus body structure under bending and torsion, stress analysis in integral bus body, Design of chassis frame, Rules and regulations for body, Recent safety measures, Testing of body.
Vehicle Safety:
Active and passive safety, Restraint systems used in automobiles: safety belts, Head restraints, Air bags, Knee bolsters, Importance of Bumpers and their design, Types of safety glass and their requirements, Importance of Ergonomics in Automotive safetyLocations of controls.
Vehicle Structures for Crash Worthiness:
Types of crash / roll over Tests, Regulatory requirements for crash testing, Instrumentation, high speed photography, Image Analysis.
Course outcomes:
At the end of the course the student will be able to:
CO1: Reproduce chassis layouts of passenger and commercial vehicles.
CO 2: Understand the ergonomics of a vehicle and shall apply his skill to design and model vehicles as per ergonomic requirements.
CO3: Posses the knowledge of appropriate body material and choose.
CO 4: Choose suitable method for reduction in aerodynamic forces and moments in heavy vehicles.
CO 5: Identify the various safety aspects in a given vehicle and apply this knowledge while designing the vehicle for stability and safety.
Question paper pattern:
The SEE question paper will be set for 100 marks and the marks scored will be proportionately reduced to 60.
Textbook/ Textbooks
(1) Pawloski J, Vehicle Body Engineering Business Books Ltd. Illustrated Edition,1969
(2) Reimpell J The automotive chassis, Engineering principle 2nd Edition, 1983
Reference Books
(1) Watts, A. J., et al, Low speed Automobile Accidents, Lawyers and Judges , 3rd Edition, 1996
(2) Jullian Happian, An Introduction to Modern Vehicle Design SAE Illustrated Edition, 2002
(3) Braithwaite J.B. , “Vehicle Body building and drawing ", Heinemann Educational Heinemann Educational Books Ltd., London.