Dynamic Characteristic Study Of The Frame Of High-Speed Tire Experiment Machine

Design of tire high-speed experiment machine was presented in the paper. Structural design and modal analysis was performed to frame with modern design methodology. After natural frequency, strength and stiffness is contrasted in different thickness and different constraints of the same structure, the more perfect structure of frame was obtained.Frame is an important part of tire high speed experiment machine influencing security and reliability when machine is working at high speed with large loads. Under functional analysis, the structure of frame is welded with metal plate. There are 2 sorts of constrains: one is called first constrain which is only put below the frame; the other is called second constrain which is put not only below the frame but also upper 4 right angle-areas. Structural analysis is operated by Pro-E soft ware and high natural frequency can be got through second constrain after analysis.Based on constrain of the frame, thickness of plate was calculated and analyzed in the paper. In the modal analysis, the first natural frequency relates not only to constrain, but also to the thickness of the selected plate. After satisfying the high natural frequency, strength and stiffness, considering the economy of the frame, which caused the quality of the frame to be as small as possible, also is another question for study in the paper. First, using second constrain, the static state and dynamic analysis applied to the frame of a few thickness plates with FEM modal analysis, distortion, stress, vibration and frequency were gained. After comparing and satisfying, 14 mm thickness plate frame has the best economic and performance, and guarantees the entire high speed tire dynamic characteristic experiment stability.