BOF higher rate of death & serious injury, more torsional flexin

Advantages and disadvantages compared to unibody

[edit] Advantages

• Easier to design, build and modify (less of an issue now that Computer-Assisted Design (CAD) is commonplace, but still an advantage for coach-built vehicles).
• Quieter, because the stresses do not pass into the body, which is isolated from the frame with rubber pads around the attachment bolts. Less significant lately, but earlier bodies would squeak and rattle, ever more as they rusted, lubricants drained, and fasteners loosened. Isolated bodies had a lesser degree of these modes of aging.
• Smoother ride due to the same isolating pads.
• More suited for heavy duty usage such as towing and off-roading; can be more durable.
• Easier to repair after accidents. Grand-Am allows tubular spaceframe cars to replace their monocoque counterparts, as the cars can easily be repaired with new clips.
• In an environment where roads are salted, it will not rust through as quickly.
• Could allow a manufacturer to easily sub-contract portions of work, e.g. as when Austin subcontracted the aluminum body work of the Austin A40 Sports to Jensen Motors.

[edit] Disadvantages

• Heavier than unibody - lower performance and/or higher fuel consumption.
• Less resistant to torsional flexing (flexing of the whole car in corners) - compromising handling and road grip.
• No crumple zone - higher rate of death and serious injury. Some cars have adopted a "front clip" and "rear clip" format similar to what is used in NASCAR race cars where the car is split into three sections, and the clips absorb the impact, allowing the "clip" to be replaced when repairing the car.^[3]

所有跟帖： 

• 鲨鱼认为只要是他说的都是铁定的结论 -闹不明白- ♀ (0 bytes) () 06/21/2011 postreply 08:10:34

• 你相信实战图片还是文字推断？ -杀雨- ♂ (129 bytes) () 06/21/2011 postreply 18:48:35

• 人家那么多碰撞试验就不如你？ -闹不明白- ♀ (0 bytes) () 06/21/2011 postreply 21:51:07

• 生命是自己的。你爱信谁就信谁。 -杀雨- ♂ (230 bytes) () 06/22/2011 postreply 08:48:30