need auto body frame repair overview

[OS]

Can someone explain or point a source to me on how auto frame repair works? I was recently in a car wreck and the front end past the radiator was destroyed. I'd to know how body shops repair frames and stuff. I did a quick search on google but I didn't find anything really clear.

 

[Ornery]

Why are today's vehicles so different to repair?

• Vehicles today are mostly of unitized construction, which means that the vehicle has no frame, but that all the sheet metal components are welded together for a solid structure.
  Unibody design allows the manufacturer to design energy management into the
  vehicle and this controlled damage absorption helps to protect the driver and passengers in the vehicle in the event of a collision.
  These vehicles also have computer driven systems and mechanical components that can also be damaged in a collision and the repair shop must have the knowledge and equipment to repair all these systems. Supplemental restraint systems (air bags ) and other design characteristics must be restored to pre-Loss condition so that in the event of another collision these systems will function the way they were designed to.The structural integrity of the vehicle must be totally restored in order to maintain vehicle safety and the safety of you and your family.