Body & Chassis Design

April 27, 2017 | Author: Anshul Kothari | Category: N/A
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Body & Chassis Design...

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Body & Chassis Design Body & Chassis Design G. N. Kotwal

Contents • Considerations • Body Design : Body Design : – Body Styles – sedan, hatchback, station wagon, SUV, etc. – Body Shell Body Shell – Body Components : Bumpers, grills, glasses, headlights,  etc. – Body interiors – passenger compartment – restraint  systems, airbags, Dashboard, trimmings, seats,  materials, HVAC. t i l HVAC

• Chassis Design :

Vehicle Structure Requirements Vehicle Structure Requirements • To maintain the shape of the vehicle and to support the  various loads applied to it. • Accounts for a large part of the development and  manufacturing cost in a new vehicle. • Imp. Criteria : strength and stiffness.  • A design aims to achieve these with as little mass as  possible. • Structural Design involves – – Selection of type. – Proper Element layout for continuous load paths (equilibrium of  Proper Element layout for continuous load paths (equilibrium of edge forces between simple structural surfaces) – Sizing of Panels, Sections & Joints.

Strength & Stiffness • Sufficient Strength for all load cases. (Resistance  against failure) • Stiffness – Deflections within elastic limit. • Low stiffness  Low stiffness – Lot of vibrations, Alteration in  Lot of vibrations Alteration in Geometry. Major ones necessary : – Bending Stiffness Bending Stiffness – Torsional Stiffness Vibrational Behaviour decided by stiffness & natural  decided by stiffness & natural freq. 

Body ‰Made of steel, aluminum, fiberglass,  ‰Made of steel aluminum fiberglass plastic, or composite materials ‰Forms the outside of the vehicle ‰Forms the outside of the vehicle ‰Serves as an attractive covering for the  chassis h i ‰ Integral with Chassis for Light Vehicles (Wt. 
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