Regarding the issue of using another method for reinforcement calculations in SW6
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I need help from experts: what is inside the sqrt(...) in the image? Why is this problem occurring? Is there an error in my input?
Could the original poster clarify the input conditions a bit?
Holes are made in the head, and the pipe fitting forgings are flanged before being joined to the head.
The decimal place of the estimated hole diameter is off by one
This post was last edited by suyangjishubu on 2017-5-12 at 10:37. It’s exactly like this. The diameter is 4400 mm, and the thickness of the head is 26 mm. An opening of DN600 is provided in the head; due to limited space, tube fitting full-forging flanging is used for welding it to the head.
Isn’t the wall thickness of the forged pipe a bit thin? Is the roundness radius r a bit too large?
Please refer to 10.3 in the JB4732-95 analysis and design standards, which outlines another method for reinforcing openings, along with the constraints regarding the size of those openings
Another reinforcement method, namely the elastoplastic method, has limitations regarding equipment conditions. Make a hole in the cover of the poster, with the requirement that d/sqrt(Diδn)≤0.8 ； d-Opening diameter ； Inner diameter of Di-device ； δn – nominal thickness of the head