JNTUK B.Tech Vehicle Body Engg. & Safety gives you detail information of Vehicle Body Engg. & Safety R13 syllabus It will be help full to understand you complete curriculum of the year.
Course objective: To impart the knowledge of the vehicle design procedures and safety measures to be considered in designing a vehicle. Further concepts of aerodynamic profile and to minimize noise and vibration are also introduced.
UNIT-1 : INTRODUCTION: Classification of coachwork type: styling forms, coach and bus body style, layout of cars, buses and coach with different seating and loading capacity, commercial vehicles types, vans and pickups. Terms used in body building construction, angle of approach, angle of departure, ground clearance, cross bearers, floor longitudes, posts, seat rail, waist rail, cant rail, roof stick, roof longitude, rub rail, skirt rail, truss panel, wheel arch structure, wheel arch, post diagonals, gussets.
UNIT-II : VEHICLE BODY MATERIALS: Aluminium alloys, steel, alloy steel, plastics, metal matrix composites, structural timbers- properties, glass reinforced plastics and high strength composites, thermoplastics, ABS and styebes, load bearing plastics, semi rigid PUR foams and sandwich panel construction. Paint adhesive and their properties, corrosion and their prevention.
UNIT-III : 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.
VEHICLE STABILITY: Introduction, longitudinal, lateral stability, vehicle on a curvilinear path, critical speed for toppling and skidding. Effect of operating factors on lateral stability, steering geometry and stabilization of steerable wheels, mass distribution and engine location on stability.
UNIT-IV : LOAD DISTRIBUTION: Types of body structures, vehicle body stress analysis, vehicle weight distribution, calculation of loading, symmetrical, longitudinal loads, side loads, stress analysis of bus structure under bending and torsion.
UNIT-V : INTERIOR ERGONOMICS: Introduction, seating dimensions, interior ergonomics, ergonomics system design, seat comfort suspension seats, split frame seating, back passion reducers, dash boards instruments, electronic displays, commercial vehicle cabin ergonomics, mechanical packages layout, goods vehicle layout. Visibility, regulations, drivers visibility, methods of improving visibility, window winding and seat adjustment mechanisms.
UNIT-VI: NOISE AND VIBRATION: Noise characteristics, sources of noise, noise level measurement techniques. Body structural vibrations, chassis bearing vibration, designing against fatigue, method of noise suppression.
SAFETY: Impact protection basics, physics of impact between deformable bodies, design for crash worthiness, occupant and cargo restraint, passive restraint systems, side impact analysis, bumper system energy absorbent foams, laws of mechanisms applied to safety.
Course outcome: After completing the course the student will be in a position to choose the correct material for various parts of the vehicle. Student will have enough knowledge to address the problems arising out of aerodynamic forces noise, vibration and the factors influencing the vehicle stability.
TEXT BOOKS
- Sydney F pages, “Body Engineering” Chapman & Hall Ltd, London, 1956.
- “Giles J Pawlowski”, vehicle body engineering Business books limited, 1989.
- John Fenton, “Vehicle body layout and analysis”, Mechanical Engg. Publication ltd, London.
REFERENCES
- Hand book on vehicle body desing-SAE publication.
- Vehicle safety 2002, Cornwell press, Townbridge, UK, ISBN 1356-1448.
- Redesign of bus bodies – part I & part II – CIRT Pune (report), 1983.
- Ed W.H. Hucho, Aerodynamics of Road Vehicles, 4th Edition, Butter worth’s 1987.
- Scibor-Rylski A.J, Road vehicle Aerodynamics, Pentech press, London 2nd Edition 1984.
- Rae W.H & Pope A, Low Speed Wind Tunnel Testing wiley & sons, USA 1984.
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