In this paper, the fuel pump impeller was selected as a typical airborne equipment for investigation of random vibration fatigue. First, based on platform ANSYS WORKBENCH, reasonable calculation FSI carried out. Then, stress transferred to modal analysis, and prestress-structure extracted. Through response obtained. The Palmgren Miner rule Dirlik fatigue method used calculate life, result consi...

With the rapid development of direct-current grid technology and construction, flexible transmission has been widely used in many aspects, such as long-distance large-capacity power transmissions, offshore platforms island supplies. The direct current converter valve will encounter a variety unfavorable loads during marine transportation long-term operation on sea. safety requirements are highe...