Abstract
The effects of suspension type, platform position of the truck and running speed on the vibration were analyzed to develop a three dimensional simulated transport method for optimum package design. Power spectrum density (PSD) data were obtained for the vibration data collected through transport test on the expressway by using truck with the loading capacity of 10tons. Generally, acceleration level at rear platform were higher than at front. There was a highest peak at around 3Hz (0.98 to 4.88Hz) for the vertical vibration of leaf suspension equipped truck. Sixty percent of this peak was reduced by changing the suspension type from leaf suspension to air suspension, whereas no reduction or slight increase was found for the vibration acceleration of horizontal vibration (right and left, front and back). There were differences among the PSD data on a frequency band (20 to 30Hz or more) of vertical vibration taken from different running speed and the suspension type. However, it seems to have a little effect on the product damage because the vibration acceleration level was very low.
