TRANSIENT THERMOMECHANICAL ANALYSIS OF LIQUEFIED PE-TROLEUM GAS VESSEL UNDER FLAME SURROUNDINS*
The themomechanical stress analysis aims at the thermal and mechanical response of LPG vessel under high thempeature environment. It includes the ealculation of temperature field and stress field of LPG vessel. The finite elements analysis software ANSYS is used to calculate the temperature field. The themal boundary conditions of LPG vessel are determined according to the heat transfer theory and calculated by the software PLGS99. The transient stress of LPG vessel includes transient thermal stress and transient mechanical stress. The thermal stress is calulated by applying thermal load, and the mechanical stress is calculated by applying pressure load of the steam in the vessel. The total stress is obtaince by adding the thermal stress and the mechanical stress. The reults show that the maximum stress in the vessel appears near the highest surface where the liquid cal reach, that the maximum cquivalent thermal stress is much larger than the maximum equivalent mechanical stress. and that the temperature gradient in longitude direction is the main reason that leads to the failure of the vessel.
版权说明：以下全部内容由肖金生上传于 2005年06月22日 22时30分05秒，版权归本人所有。