How to calculate the reinforcement of these two holes? ? ? Waiting online
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design parameters: The design pressure is 3.8MPa, the design temperature is -100℃, and the material S30408 is as shown in the figure. The distance between the two nozzles on the cylinder is less than the sum of the two hole diameters. The first consideration is to jointly reinforce the two pipes. Since the large nozzle has a large opening diameter, equal area reinforcement cannot be used. SW6 prompts the analysis method for the large nozzle. ； May I ask how these two takeover reinforcements are calculated? A. Each has his or her own calculation, large nozzle analysis method, small nozzle equal area method ； B. Finite element experts are asking for help, thank you! ! ! !
Please help, please give an expert answer. . . .
After a rough calculation, I can use the analytical method：
The large and small pipes are calculated separately, and the large ones are analyzed using the equal area method for the small ones, right?
The large and small pipes are calculated separately, and the large ones are analyzed using the equal area method for the small ones, right?
First, it is necessary to determine whether the equal area method meets the conditions for single opening reinforcement. If not, joint reinforcement is required.； The poster said that the joint reinforcement calculation failed and the analytical method must be used to calculate. Then it is necessary to judge whether the minimum distance between the two opening edges meets the provisions of Article 6.6, that is, to judge the value of 2(Dδ)^0.5 and the actual stakeout. If this article is not satisfied, the analytical method cannot be used. Roughly calculating 2(Dδ)^0.5=215, the minimum distance between the edges of the two holes seems to be about 224, so it meets the range requirements of the analytical calculation. Personally, I think that both holes can be calculated according to the single hole analysis method. For small holes, because they do not meet the calculation requirements of the single hole equal area method, you can actually check the calculation book and manually change the A1 area to see if it meets the reinforcement requirements, which can also be used as a basis for judgment.
Large hole analysis method, just change the B value of the reinforcement range for small holes
How do you understand the first article about the scope of use of analytical methods?