Spherically dished bolted cover Type D - ASME Div.2
Spherically dished bolted cover Type D - ASME Div.2
(OP)
Hello everybody,
I have calculated a spherically dished bolted cover Type D with alternative rule of paragraph 4.7.5.3. In Table 4.7.1 it compares the membrane+bending stress at head-to-flange junction with 1.5*S. Why does it consider the bending like a primary stress and not like a secondary stress? If it will be secondary, the acceptance criteria must be 3*S!!
Thank you very much.
I have calculated a spherically dished bolted cover Type D with alternative rule of paragraph 4.7.5.3. In Table 4.7.1 it compares the membrane+bending stress at head-to-flange junction with 1.5*S. Why does it consider the bending like a primary stress and not like a secondary stress? If it will be secondary, the acceptance criteria must be 3*S!!
Thank you very much.





RE: Spherically dished bolted cover Type D - ASME Div.2
Check out this article written by Edward Pope on classification of stresses. It should help.
h
ESCE, Inc.
http://esce.freeservers.com
RE: Spherically dished bolted cover Type D - ASME Div.2
RE: Spherically dished bolted cover Type D - ASME Div.2
If you really think that there is an error in this particular rule, write an inquiry to the committee explaining your rationale. Then, a volunteer on the committee will take a look at it (hopefully in conjunction with you) and the committee as a whole will issue their ruling.
Until the rules are changed, however, the rules are the rules...