STRENGTH AND DURABILITY OF VERTICAL CYLINDRICAL STEEL TANKS FOR OIL AND PETROLEUM PRODUCTS WITH UNEVEN FOUNDATION SEDIMENTATION
The purpose of the article is to analyze the strength and durability of steel tanks with uneven foundation sedimentation that occurs during their operation. An example of calculating stresses in the walls of the RVS-5000 tank for oil storage is considered. The calculation model of the reservoir is constructed by the finite element method in the LIRA-CAD software package. Calculations show that with uneven foundation sedimentation, a local stress concentration occurs in the lower part of the tank walls. Stress concentration can cause the destruction of the reservoir with the accumulation of low-cycle fatigue. Based on the calculation model, it is possible to give a forecast of the service life of the tank.