Structural Stress Analysis And Structural Optimization Of Large Vertical Vault Storage Tank

With the development of large-scale and centralized storage tanks,more and more governmenWith the development of large-scale and centralized storage tanks,more and more attention has been paid to the optimization design of storage tanks.In this paper,aiming at the large vertical storage tanks,the tank material of the province as the goal,established the optimal design dimensions of tank shell,calculates the model by using MATLAB software,obtained the best shape and size of the corresponding size calculation diagram(V-D-t).At the same time,by using the recommended value of the optimal value and the national standard atlas,the quantity of the storage tank under the same nominal volume is compared and analyzed.After comparing and analyzing,it is found that when the V<2000m3 value is 7.64%,the recommended value of the storage material is saved;When V>2000m3,the tank material saves 13.82%.The optimum size of fixed storage tank engineering volume rendering,combined with the standard SH/T 3167 completed the structural design of 100-10000m3 series tank.In the 3D modeling software SolidWorks,macro recording language is used to record and edit the parametric modeling of the vault and the tank wall.Application of ANSYS static finite element analysis software Workbench analysis module,the static finite element analysis of the storage tank,and data extraction path set in the storage vault,bearing ring and tank wall,the extraction and analysis of position setting path force characteristic curve.Found from the vault and the pressure ring welding position to the distance from the vault 0.8R,fast deformation and reaches the maximum vault deformation at 0.8R,while the vault stress characteristics in contrast;bearing ring roof stress value to remain unchanged from the front roof,it reached the maximum stress mutation and until the supporting board welding position;The overall storage tank wall deformation trend and tank wall stress distribution is basically the same,are from top to bottom gradually increased,and at the bottom of the tank wall reaches the maximum,the displacement is 5.78 mm,the maximum stress is 103.5MPa;and reached the minimum at the bottom of the tank wall,its value tends to 0.Based on the characteristic curve of storage tank and the theory of strength judgment,the strength of the main parts of the storage tank is determined,and the conclusion is drawn that the main parts of the tank,such as the crown,the pressure bearing ring and the tank wall,can be optimized.The tank components of the minimum mass as the object,established the optimal design of main parts of tank wall thickness,the use of ANSYS Workbench software in Response Surface Optimization(optimized response)module to optimize the design calculation of the target,the optimal value of the main parts of the tank to meet the constraints of the.At the same time,the consumption of the main components of the storage tank under the same nominal volume is compared with the conventional design value.The results show that the average consumption of the material is 12.4%,the average consumption of the pressure bearing material is saved by an average of 39.4%,and the average consumption of the wall material is saved by about 9.8%.