Numerical Simulation and Test Research on Modal Characteristics of Motorcycle Frame

The modal characteristics of motorcycle frame are the basics of other dynamic characteristics.In order to meet the need of new frame design and development,method on the combination of numerical simulation and experimental verification was adopted to research on modal characteristics of the new type of motorcycle frame.Hyperworks finite element analysis software helped complete the numerical simulation of frame modal characteristics and the first ten order natural frequencies and vibration modes were extracted; at the same time experimental modal analysis of motorcycle frame was done through the aid of LMS.TEST.LAB data acquisition and analysis software and the modal test results were validated through modal synthesis and modal assurance method(MAC),thus providing theoretical basis for frame vibration noise reduction and structural optimization.