Response Analysis to Oilcan during Road Transportation
Li Enqi,Tang guojin,Lei Yongjun,Li Daokui
(School of Astronautic and Material Engineering, National Univ. of Defense Techn ology, Changsha 410073)

Abstract: 3-D FEM model of the oilcan and truck was established in MSC/NAS TRAN to determine the rule of the response during road transportation. The dynamic system behaviors were analyzed, and the natural frequencies and the modal shapes were obtained. Random response analysis method and transient response analysis method were employed to evaluate the oilcan dynamic response on different level roads and at different speeds, then the location of the maximum response, the resonant frequence range and the corresponding modes were determined, and RMS of the acceleration response in both methods was found to be consistent. The results show that the truck efficiently facilitates decreasing the road excitati on to the oilcan, and the maximum of the acceleration response in oilcan is 2.5 ～3 times as much as the RMS.
Keywords: oilcan, random response analysis, transient response analysis.