Estimation of the strength of vertical cylindrical liquid storage tanks with dents in the wall

A multi-level mathematical model was used to estimate the stressed-strained state of a cylindrical reservoir with defect in wall shape form dent; concentration stresses zone studied. The proper choice verified; it has been shown that engineering assessment tank variable thickness could employ ratios for shell constant thickness. spread values is 2?10 %. This indicates model, as well fact possible, an thickness, use dent numerically estimated, which proved assumption significant stress concentrations and indicated determining effect on exerted by its geometric dimensions depth particular. dents investigated ANSYS programming environment at different sizes wall, two dimensionless parameters were introduced: radius dent. Based results numerical study into graphic dependences derived coefficient various dents, does not exceed 2 % indicator. fitting curves tank, formula calculating function ? ? resulting makes known dent, determine coefficients dented wall.