The body-in-white of the Cadillac CT6 is structurally lighter and stiffer than any other dynamically similar vehicle such as the BMW 5-Series or Audi A6. That state-of-the-art architecture is the foundation for its benchmark-establishing agility and vault-like solidity and quietness.
The new architecture has a mixed-material structure with all-aluminum exterior body panels. Engineers conducted 50 million hours of computational analysis – including 200,000 structural simulations – in its development, generating 21 patents.
“Every panel of the body-in-white is optimized with innovative joining techniques,” said Travis Hester, executive chief engineer, Cadillac CT6. “It’s an uncompromising approach that provides the best balance of strength, lightness and refinement.”
Thirteen high-pressure aluminum die-castings in the lower body construction reduce complexity and are significant contributors to the architecture’s low mass. The CT6 is approximately 218 pounds (99 kg) lighter than a comparable vehicle using predominantly high-strength steel.
GM’s most advanced body manufacturing methods are used to fabricate the structure, including proprietary aluminum spot welding technology that is more efficient and helps reduce weight. Laser welding, flow drill fasteners and self-piercing rivets are also employed, along with roughly 591 feet (180 meters) of advanced structural adhesives.