The body structure greatly influences the major characteristics of a vehicle such as crashworthiness safety, durability,
noise and vibration control performance and so on. To fulfil these decisive features, several efforts should be carried
out in the body design process down to the smallest detail. In X7, body structure has been designed based on following
requirements:
Serviceability
Torsion bending tests and analysis have been accomplished to satisfy the passengers comfort and prevent any
probable plastic deformations under service loads. In addition, based on modal and joint stiffness investigation and
component modification, the whole body frequencies have been adjusted to an acceptable range.
Durability
Several thousand kilometres have been covered in road tests, combined with a variety of component fatigue
investigations have led to a robust design, which maintains body integrity during the lifetime of the vehicle