Case Study: What Is Body In White (BIW)

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CAR BODY-IN-WHITE
N.A.Z. Abdullaha, M.S. Mohd Sanib
ª Noor Am Zura Abdullah,Fakulti Kejuruteraan Mekanikal, Universiti Malaysia Pahang, Malaysia bSecond affiliation, Address, City and Postcode, Country

1. What is body in white (BIW)?
An automobile's structural performance is determined by the performance of its body, usually referred to as the "body in white' or BIW. The BIW is a steel (or aluminum or composite) shell structure composed of a series of stressed panels fixed together. It supports all the other vehicle components, such as closures (doors, hood, deck lid), trim (seats, instrument panel), power train (engine transmission), and chassis (suspension, wheels) [1]. In definite definition according to Morello [2], BIW refers to the stage in automotive design or automobile manufacturing in which a car body's sheet metal components have been welded together but before moving parts (doors, hoods, and deck lids as well as fenders) the motor, chassis sub-assemblies, or trim (glass, seats, upholstery, electronics, etc.) have been added and before painting.

2. BIW Structural Performance According to Melcher and Hough [1], BIW structural performance often is judged by …show more content…

A statically stiff vehicle is desirable as it will be more durable and less prone to squeaks. Dynamic stiffness refers to the vehicle’s vibration characteristics. It affects the occupants’ perception of the vehicle’s noise, vibration, and harshness (NVH). Crashworthiness is the term used to measure a vehicle’s performance under impact conditions. A good design will be neither too strong (in which case the occupant would undergo very high acceleration) nor too weak (in which case the vehicle would absorb too little energy and not protect the occupant compartment from deformation). On the other hand, in term of mass, low mass is desirable for performance (acceleration and handling), fuel economy, and material

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