Vertical Cylindrical Tank With Angular Geometrical Imperfection

In this paper the results of experimental research are given for the stress and strain state of a near seam zone. The research is executed on large‐scale model of a zone of vertical cylindrical tank assembly connection with a geometrical imperfection. As a result, the dependence is received between values of the basic stress, which take place in a tank wall of the ideal form, and local stress, which arise in a seam zone. It is proved by experiments that when the ring stress achieves value 100 mPa, then the local stress in a near seam zone achieves the stress of 280–300 mPa. Hence, they exceed three times their major importance. These stress values are coordinated satisfactorily to the data, which are received by a theoretical way.