SXQC body vibration testing at different speeds
Project name: SXQC body vibration testing at different speeds
Brief introduction：Understanding how a vehicle behaves under dynamic conditions is critical to optimizing both performance and comfort—especially in applications involving heavy-duty trucks and high-speed sports cars. To thoroughly evaluate the structural behavior and further refine the mechanical design, SXQC conducted a comprehensive and detailed body vibration test across a wide range of driving speeds.
The test was performed using the DE-944 Dynamic Signal Analysis System in conjunction with precision accelerometers, which were strategically mounted on key components of the vehicle, including:
The engine block
Left front axle
Vehicle frame
Driver seat
These sensors carefully captured vibration acceleration data across multiple axes, with a particular emphasis on the vertical (downward) direction. This focus is crucial because excessive vibration in this axis can significantly affect vehicle handling, contribute to structural fatigue over time, and reduce overall driver comfort during operation.
By conducting carefully controlled tests at a variety of different speeds, the engineering team was able to accurately track and analyze how vibration levels changed as a direct function of velocity. The advanced DE-944 system’s high-speed, multi-channel capabilities enabled seamless real-time acquisition as well as detailed post-processing of large and complex volumes of dynamic data.
The test results revealed clear patterns in how vibration propagated through the vehicle body and identified problematic frequency ranges where resonance was amplifying motion. More importantly, the data helped pinpoint the root causes of excessive vertical vibration, which were traced back to a combination of frame resonance and axle imbalance.
This project provided valuable insights into vehicle dynamic performance and offered engineers the data they needed to make targeted structural improvements—whether through stiffening the frame, adjusting suspension geometry, or refining engine mounting points.
Through advanced vibration testing, SXQC successfully improved vehicle stability, ride quality, and durability, reinforcing the role of precision testing in modern vehicle design.
