As an important part of the
New Car chassis system, the New Car subframe has a vital impact on the performance, safety and comfort of
Fuel Car. Understanding its key technical indicators is of great significance for the design, manufacturing and quality assessment of Fuel Car.
1. Strength and stiffness
Strength is the ability of the subframe to resist damage, and stiffness is its ability to resist deformation. During the driving of Fuel Car, the subframe must withstand various loads from the road, including vertical impact force, longitudinal traction and braking force, and lateral force. If the strength is insufficient, the subframe may crack or even break, endangering driving safety.
Insufficient stiffness will cause excessive deformation of the subframe, affect the wheel alignment parameters, and thus make the handling of Fuel Car worse. For example, when cornering at high speed, the stiffness of the subframe determines whether it can maintain a stable geometry and ensure that the New Car turns accurately according to the driver's intention. Therefore, in the design and manufacturing process, it is necessary to ensure that the subframe has sufficient strength and stiffness through reasonable material selection and structural design.
2. Modal and vibration characteristics
The modal frequency of the New Car subframe is crucial to avoid resonance. When the external excitation frequency is close to a certain modal frequency of the subframe, resonance will be triggered, resulting in increased noise and vibration in the vehicle, which seriously affects ride comfort. Engineers use modal analysis technology to accurately calculate the modal frequency of the subframe and stagger it with the frequency of vibration sources such as the engine and tires to reduce vibration transmission. In addition, a reasonable vibration characteristic design can also absorb and attenuate vibration from the road to a certain extent, improving the ride smoothness of Fuel Car.
