[Daily question] [Static Equipment Exchange Edition...Question 129] Multiple choice question on May 9, 2019... Everything goes well
Thread Content
This post was last edited by kareale88 on 2019-5-9 08:38 [Daily Question] [Static Equipment Exchange Edition...Question 129] Multiple choice question on May 9, 2019... All the best................................................................................... Answers (single choice, single choice, single choice) please fill in each in order. Bonus rules: Participation will reward 1 wealth, and correct answers will reward 3 wealth for each item, with a maximum of 10 wealth. ....................................................................1. When analyzing and calculating with partial reference to the provisions of JB4732, the design stress intensity should be selected according to the allowable stress in (), but its manufacturing requirements should be according to the corresponding requirements in (). The answer is: () A. GB150.2——GB150.2 ； B. JB4732——JB4732 ； C. GB150.2——JB4732 ； D. JB4732——GB150.2 ； ---------------------2. The safety factor for the circumferential stability of the cylinder's external pressure specified in GB150 is 3.0, and the safety factor for the external pressure stability of the spherical shell and formed head is 15. () A. Correct ； B. Error ； ---------------------3. K in the calculation formula of the elliptical head is called the shape coefficient, and its meaning is the ratio of the maximum total stress on the head to the hoop film stress of the butt cylinder. () A. Correct ； B. Error ； ---------------------Answer: (Inspect pressure vessel knowledge points) 1. C 2. A 3. A
1.C 2.B 3.A
1.C 2.A 3.A
This post was last edited by abcdsys on 2019-5-9 08:31 1.D 2.B 3.A Question 2: “....., the external pressure stability safety factor of the spherical shell and formed head is 1.5” and the safety factor should be 15
1.D 2.B 3.A
Comment: GB150 Definition P41
This post was last edited by zjq1962 on 2019-5-9 08:35. Where is the source of 1.5 in the second question of the moderator? Isn't it 15?
This post was last edited by yechao25038 on 2019-5-9 08:38 1, B 2, A This question was not found in the standard. It was found in the definition of 150, but the definition said that the safety factor is 15. This should be a printing error, right? 3. A. How can the allowable stress analyzed and designed in the first question be selected according to 150.2? The safety factors are all different, so why bother: dizzy: